./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:51:22,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:51:22,140 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:51:22,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:51:22,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:51:22,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:51:22,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:51:22,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:51:22,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:51:22,213 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:51:22,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:51:22,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:51:22,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:51:22,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:51:22,215 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:51:22,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:51:22,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:51:22,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:51:22,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:51:22,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:51:22,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:51:22,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:51:22,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:51:22,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:51:22,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:51:22,218 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:51:22,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:51:22,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:51:22,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:51:22,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:51:22,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:51:22,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:51:22,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:51:22,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:51:22,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:51:22,220 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_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd 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 -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2024-11-13 13:51:22,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:51:22,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:51:22,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:51:22,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:51:22,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:51:22,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c Unable to find full path for "g++" [2024-11-13 13:51:25,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:51:25,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:51:25,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2024-11-13 13:51:25,416 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data/071abaaee/5cfee3bc736d44339b6a0a77b65243d7/FLAG9093ac378 [2024-11-13 13:51:25,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data/071abaaee/5cfee3bc736d44339b6a0a77b65243d7 [2024-11-13 13:51:25,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:51:25,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:51:25,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:51:25,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:51:25,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:51:25,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c7d421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25, skipping insertion in model container [2024-11-13 13:51:25,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:51:25,761 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2024-11-13 13:51:25,767 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2024-11-13 13:51:25,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:51:25,784 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:51:25,812 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2024-11-13 13:51:25,813 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2024-11-13 13:51:25,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:51:25,839 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:51:25,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25 WrapperNode [2024-11-13 13:51:25,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:51:25,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:51:25,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:51:25,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:51:25,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,890 INFO L138 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2024-11-13 13:51:25,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:51:25,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:51:25,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:51:25,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:51:25,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,924 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:51:25,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:51:25,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:51:25,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:51:25,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:51:25,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (1/1) ... [2024-11-13 13:51:25,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:51:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:26,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:51:26,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:51:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:51:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:51:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:51:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:51:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2024-11-13 13:51:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2024-11-13 13:51:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:51:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:51:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:51:26,192 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:51:26,195 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:51:26,543 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-13 13:51:26,544 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:51:26,558 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:51:26,558 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:51:26,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:51:26 BoogieIcfgContainer [2024-11-13 13:51:26,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:51:26,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:51:26,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:51:26,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:51:26,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:51:25" (1/3) ... [2024-11-13 13:51:26,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d51bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:51:26, skipping insertion in model container [2024-11-13 13:51:26,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:25" (2/3) ... [2024-11-13 13:51:26,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d51bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:51:26, skipping insertion in model container [2024-11-13 13:51:26,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:51:26" (3/3) ... [2024-11-13 13:51:26,573 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2024-11-13 13:51:26,597 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:51:26,599 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG float_req_bl_1231.c that has 3 procedures, 55 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 13:51:26,690 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:51:26,709 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;@3c965329, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:51:26,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:51:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 40 states have (on average 1.45) internal successors, (58), 42 states have internal predecessors, (58), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-13 13:51:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:51:26,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:26,729 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:26,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:26,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash -314466631, now seen corresponding path program 1 times [2024-11-13 13:51:26,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:26,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564791495] [2024-11-13 13:51:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:51:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:51:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:51:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564791495] [2024-11-13 13:51:27,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564791495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:27,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:27,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:51:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738447666] [2024-11-13 13:51:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:27,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:51:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:51:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:27,239 INFO L87 Difference]: Start difference. First operand has 55 states, 40 states have (on average 1.45) internal successors, (58), 42 states have internal predecessors, (58), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:27,500 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2024-11-13 13:51:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:51:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-13 13:51:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:27,514 INFO L225 Difference]: With dead ends: 97 [2024-11-13 13:51:27,514 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 13:51:27,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:27,522 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:27,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 226 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:51:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 13:51:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-13 13:51:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-13 13:51:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2024-11-13 13:51:27,582 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 28 [2024-11-13 13:51:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:27,583 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2024-11-13 13:51:27,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2024-11-13 13:51:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 13:51:27,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:27,587 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:27,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:51:27,587 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:27,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1296711876, now seen corresponding path program 1 times [2024-11-13 13:51:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001551568] [2024-11-13 13:51:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:51:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:51:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 13:51:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:51:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001551568] [2024-11-13 13:51:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001551568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:27,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:27,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:51:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99950529] [2024-11-13 13:51:27,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:27,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:51:27,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:51:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:27,998 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:28,179 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2024-11-13 13:51:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:51:28,180 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-13 13:51:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:28,183 INFO L225 Difference]: With dead ends: 77 [2024-11-13 13:51:28,183 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 13:51:28,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:28,188 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:28,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 212 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:51:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 13:51:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-13 13:51:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2024-11-13 13:51:28,200 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 34 [2024-11-13 13:51:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:28,200 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2024-11-13 13:51:28,201 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2024-11-13 13:51:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:51:28,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:28,202 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:28,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:51:28,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:28,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1474797486, now seen corresponding path program 1 times [2024-11-13 13:51:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336846314] [2024-11-13 13:51:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:51:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:51:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:51:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:51:28,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:28,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336846314] [2024-11-13 13:51:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336846314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:28,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:28,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:51:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852491140] [2024-11-13 13:51:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:28,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:51:28,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:51:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:28,446 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:28,591 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2024-11-13 13:51:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:51:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-13 13:51:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:28,594 INFO L225 Difference]: With dead ends: 81 [2024-11-13 13:51:28,596 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 13:51:28,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:28,597 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:28,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 228 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:51:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 13:51:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-13 13:51:28,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2024-11-13 13:51:28,617 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 35 [2024-11-13 13:51:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:28,617 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2024-11-13 13:51:28,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2024-11-13 13:51:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 13:51:28,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:28,619 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:28,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:51:28,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:28,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash -427751304, now seen corresponding path program 1 times [2024-11-13 13:51:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:28,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088967219] [2024-11-13 13:51:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:28,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:51:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:51:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 13:51:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:51:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:28,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088967219] [2024-11-13 13:51:28,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088967219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:28,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:28,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:51:28,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369357559] [2024-11-13 13:51:28,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:28,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:51:28,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:28,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:51:28,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:28,905 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:29,039 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2024-11-13 13:51:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:51:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-13 13:51:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:29,042 INFO L225 Difference]: With dead ends: 81 [2024-11-13 13:51:29,045 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 13:51:29,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:29,047 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:29,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 228 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:51:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 13:51:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-13 13:51:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2024-11-13 13:51:29,068 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 36 [2024-11-13 13:51:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:29,073 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2024-11-13 13:51:29,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2024-11-13 13:51:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 13:51:29,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:29,075 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:29,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:51:29,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:29,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash -56325234, now seen corresponding path program 1 times [2024-11-13 13:51:29,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:29,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706339049] [2024-11-13 13:51:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:51:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:51:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 13:51:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:51:29,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706339049] [2024-11-13 13:51:29,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706339049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:51:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82802367] [2024-11-13 13:51:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:29,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:51:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:51:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:29,322 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:29,463 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2024-11-13 13:51:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:51:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-11-13 13:51:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:29,469 INFO L225 Difference]: With dead ends: 81 [2024-11-13 13:51:29,469 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 13:51:29,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:51:29,471 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:29,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 228 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:51:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 13:51:29,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-13 13:51:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2024-11-13 13:51:29,491 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 37 [2024-11-13 13:51:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:29,493 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2024-11-13 13:51:29,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2024-11-13 13:51:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 13:51:29,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:29,498 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:29,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:51:29,499 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:29,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash -561883859, now seen corresponding path program 1 times [2024-11-13 13:51:29,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:29,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572253645] [2024-11-13 13:51:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:29,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:51:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:51:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:51:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 13:51:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:51:29,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572253645] [2024-11-13 13:51:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572253645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:29,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503992416] [2024-11-13 13:51:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:29,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:29,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:29,617 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 13:51:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:29,728 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2024-11-13 13:51:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-13 13:51:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:29,731 INFO L225 Difference]: With dead ends: 60 [2024-11-13 13:51:29,731 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 13:51:29,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:29,732 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:29,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 161 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:51:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 13:51:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-13 13:51:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 44 states have internal predecessors, (55), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2024-11-13 13:51:29,750 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 37 [2024-11-13 13:51:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:29,750 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2024-11-13 13:51:29,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 13:51:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2024-11-13 13:51:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 13:51:29,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:29,755 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:29,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:51:29,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:29,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash 236131699, now seen corresponding path program 1 times [2024-11-13 13:51:29,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:29,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11115385] [2024-11-13 13:51:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:29,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:51:29,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:51:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:51:29,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:51:29,886 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:51:29,887 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 13:51:29,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 13:51:29,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:51:29,896 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:29,935 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:51:29,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:51:29 BoogieIcfgContainer [2024-11-13 13:51:29,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:51:29,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:51:29,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:51:29,942 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:51:29,944 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:51:26" (3/4) ... [2024-11-13 13:51:29,948 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 13:51:29,949 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:51:29,950 INFO L158 Benchmark]: Toolchain (without parser) took 4510.69ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 86.4MB in the end (delta: 5.7MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-11-13 13:51:29,950 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:51:29,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.96ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 80.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:51:29,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.61ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:51:29,953 INFO L158 Benchmark]: Boogie Preprocessor took 61.30ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 77.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:51:29,955 INFO L158 Benchmark]: RCFGBuilder took 606.27ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 62.3MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:51:29,955 INFO L158 Benchmark]: TraceAbstraction took 3379.11ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 86.4MB in the end (delta: -24.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-11-13 13:51:29,956 INFO L158 Benchmark]: Witness Printer took 6.94ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 86.4MB in the end (delta: 14.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:51:29,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.96ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 80.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.61ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.30ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 77.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 606.27ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 62.3MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3379.11ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 86.4MB in the end (delta: -24.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Witness Printer took 6.94ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 86.4MB in the end (delta: 14.1kB). 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: 77]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L70] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578699] [L59] return x != x; VAL [\old(x)=4286578699, \result=1] [L70] RET, EXPR isnan_float(x) VAL [x=4286578699] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [x=4286578699] [L70] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578698] [L59] return x != x; VAL [\old(x)=4286578698, \result=0] [L70] RET, EXPR isnan_float(y) VAL [x=4286578699, y=4286578698] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [x=4286578699, y=4286578698] [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [x=4286578699, y=4286578698] [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578699] [L15] __uint32_t w; VAL [\old(x)=4286578699, x=4286578699] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578699, w=4286578689, x=4286578699] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578699, w=4286578689, x=4286578699] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578699, w=4286578689, x=4286578699] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; VAL [\old(x)=4286578699, \result=0, x=4286578699] [L38] RET, EXPR __fpclassify_float(x) VAL [x=4286578699, y=4286578698] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\result=4286578698, x=4286578699] [L73] RET, EXPR fmin_float(x, y) [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578699] [L59] return x != x; VAL [\old(x)=4286578699, \result=1] [L76] RET, EXPR isnan_float(x) VAL [x=4286578699, y=4286578698] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [x=4286578699, y=4286578698] [L76] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578698] [L59] return x != x; VAL [\old(x)=4286578698, \result=0] [L76] RET, EXPR isnan_float(y) VAL [x=4286578699, y=4286578698] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [x=4286578699, y=4286578698] [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() VAL [x=4286578699, y=4286578698] - UnprovableResult [Line: 83]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 1283 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 878 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 291 IncrementalHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 405 mSDtfsCounter, 291 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=6, InterpolantAutomatonStates: 29, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 48/48 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 13:51:30,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:51:33,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:51:33,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 13:51:33,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:51:33,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:51:33,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:51:33,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:51:33,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:51:33,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:51:33,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:51:33,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:51:33,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:51:33,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:51:33,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:51:33,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:51:33,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:51:33,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:51:33,563 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:51:33,563 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 13:51:33,563 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:51:33,563 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 13:51:33,563 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:51:33,563 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:51:33,564 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:51:33,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:51:33,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:51:33,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:51:33,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:51:33,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:51:33,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:51:33,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:51:33,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:51:33,565 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 13:51:33,566 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 13:51:33,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:51:33,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:51:33,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:51:33,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:51:33,566 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_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd 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 -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2024-11-13 13:51:33,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:51:33,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:51:33,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:51:33,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:51:33,964 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:51:33,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c Unable to find full path for "g++" [2024-11-13 13:51:36,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:51:36,278 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:51:36,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2024-11-13 13:51:36,293 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data/94a781246/4cf6371787b74448bf6f6e86b6f1bdec/FLAGc27786de0 [2024-11-13 13:51:36,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/data/94a781246/4cf6371787b74448bf6f6e86b6f1bdec [2024-11-13 13:51:36,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:51:36,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:51:36,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:51:36,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:51:36,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:51:36,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cd9849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36, skipping insertion in model container [2024-11-13 13:51:36,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:51:36,818 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2024-11-13 13:51:36,823 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2024-11-13 13:51:36,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:51:36,843 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:51:36,868 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2024-11-13 13:51:36,869 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_3a445eb5-769f-4ab0-96a7-968964637615/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2024-11-13 13:51:36,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:51:36,888 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:51:36,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36 WrapperNode [2024-11-13 13:51:36,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:51:36,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:51:36,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:51:36,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:51:36,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,927 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-11-13 13:51:36,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:51:36,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:51:36,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:51:36,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:51:36,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,954 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:51:36,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:51:36,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:51:36,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:51:36,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:51:36,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (1/1) ... [2024-11-13 13:51:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:51:37,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:37,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:51:37,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:51:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:51:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 13:51:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 13:51:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:51:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2024-11-13 13:51:37,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2024-11-13 13:51:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2024-11-13 13:51:37,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2024-11-13 13:51:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 13:51:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 13:51:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:51:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:51:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-13 13:51:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-13 13:51:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:51:37,179 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:51:37,183 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:51:37,506 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-13 13:51:37,506 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:51:37,519 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:51:37,520 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:51:37,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:51:37 BoogieIcfgContainer [2024-11-13 13:51:37,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:51:37,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:51:37,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:51:37,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:51:37,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:51:36" (1/3) ... [2024-11-13 13:51:37,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c1ab89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:51:37, skipping insertion in model container [2024-11-13 13:51:37,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:51:36" (2/3) ... [2024-11-13 13:51:37,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c1ab89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:51:37, skipping insertion in model container [2024-11-13 13:51:37,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:51:37" (3/3) ... [2024-11-13 13:51:37,534 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2024-11-13 13:51:37,552 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:51:37,553 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG float_req_bl_1231.c that has 3 procedures, 53 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 13:51:37,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:51:37,622 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;@2c8b5ff1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:51:37,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:51:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-13 13:51:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 13:51:37,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:37,637 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:37,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:37,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1398172335, now seen corresponding path program 1 times [2024-11-13 13:51:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:37,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608950251] [2024-11-13 13:51:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:37,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:37,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:37,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:37,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-13 13:51:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:37,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 13:51:37,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:37,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:37,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:37,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608950251] [2024-11-13 13:51:37,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608950251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:37,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:37,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:51:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742320463] [2024-11-13 13:51:37,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:37,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:51:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:51:37,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:51:37,869 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:37,891 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2024-11-13 13:51:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:51:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-13 13:51:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:37,901 INFO L225 Difference]: With dead ends: 89 [2024-11-13 13:51:37,901 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 13:51:37,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:51:37,907 INFO L432 NwaCegarLoop]: 72 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, 72 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:37,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 13:51:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-13 13:51:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-13 13:51:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2024-11-13 13:51:37,950 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 27 [2024-11-13 13:51:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:37,951 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2024-11-13 13:51:37,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2024-11-13 13:51:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:51:37,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:37,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:37,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-13 13:51:38,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:38,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:38,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2113457647, now seen corresponding path program 1 times [2024-11-13 13:51:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556472882] [2024-11-13 13:51:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:38,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:38,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:38,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:38,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-13 13:51:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:38,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:38,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:38,324 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:38,324 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:38,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556472882] [2024-11-13 13:51:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556472882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:38,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:38,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:38,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877338099] [2024-11-13 13:51:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:38,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:38,331 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:38,376 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2024-11-13 13:51:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:38,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-13 13:51:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:38,378 INFO L225 Difference]: With dead ends: 85 [2024-11-13 13:51:38,378 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 13:51:38,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:38,380 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:38,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 13:51:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-13 13:51:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-13 13:51:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-11-13 13:51:38,401 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 28 [2024-11-13 13:51:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:38,401 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-11-13 13:51:38,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:51:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-11-13 13:51:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:51:38,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:38,407 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:38,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-13 13:51:38,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:38,608 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:38,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -587825876, now seen corresponding path program 1 times [2024-11-13 13:51:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233848478] [2024-11-13 13:51:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:38,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:38,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:38,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:38,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-13 13:51:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:38,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:38,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:38,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:38,782 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:38,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233848478] [2024-11-13 13:51:38,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233848478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:38,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:38,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:38,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830828409] [2024-11-13 13:51:38,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:38,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:38,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:38,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:38,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:38,785 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:38,834 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2024-11-13 13:51:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:38,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-13 13:51:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:38,837 INFO L225 Difference]: With dead ends: 74 [2024-11-13 13:51:38,837 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 13:51:38,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:38,842 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:38,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 13:51:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-13 13:51:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-11-13 13:51:38,861 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 33 [2024-11-13 13:51:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:38,863 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-11-13 13:51:38,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-11-13 13:51:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 13:51:38,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:38,865 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:38,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-13 13:51:39,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:39,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:39,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1064708632, now seen corresponding path program 1 times [2024-11-13 13:51:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044137204] [2024-11-13 13:51:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:39,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:39,077 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:39,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-13 13:51:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:39,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:39,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:39,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:39,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044137204] [2024-11-13 13:51:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044137204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:39,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:39,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:39,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660205497] [2024-11-13 13:51:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:39,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:39,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:39,262 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:39,323 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2024-11-13 13:51:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-13 13:51:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:39,327 INFO L225 Difference]: With dead ends: 77 [2024-11-13 13:51:39,327 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 13:51:39,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:39,328 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:39,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 13:51:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-13 13:51:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-11-13 13:51:39,338 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 34 [2024-11-13 13:51:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:39,340 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-11-13 13:51:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-11-13 13:51:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:51:39,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:39,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:39,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-13 13:51:39,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:39,545 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:39,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash -419941200, now seen corresponding path program 1 times [2024-11-13 13:51:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:39,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023381566] [2024-11-13 13:51:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:39,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:39,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:39,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:39,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-13 13:51:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:39,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:39,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:39,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:39,698 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:39,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023381566] [2024-11-13 13:51:39,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023381566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:39,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:39,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800628050] [2024-11-13 13:51:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:39,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:39,700 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:39,738 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2024-11-13 13:51:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-13 13:51:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:39,739 INFO L225 Difference]: With dead ends: 77 [2024-11-13 13:51:39,740 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 13:51:39,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:39,741 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:39,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 13:51:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-13 13:51:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-11-13 13:51:39,749 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 35 [2024-11-13 13:51:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:39,750 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-11-13 13:51:39,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-11-13 13:51:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 13:51:39,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:39,751 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:39,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-13 13:51:39,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:39,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:39,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -373057764, now seen corresponding path program 1 times [2024-11-13 13:51:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260125438] [2024-11-13 13:51:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:39,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:39,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:39,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-13 13:51:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:40,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:40,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:40,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:40,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260125438] [2024-11-13 13:51:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260125438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:40,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175516199] [2024-11-13 13:51:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:40,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:40,094 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:40,130 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2024-11-13 13:51:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:40,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-13 13:51:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:40,132 INFO L225 Difference]: With dead ends: 77 [2024-11-13 13:51:40,132 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 13:51:40,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:40,135 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:40,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 13:51:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-13 13:51:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-13 13:51:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-11-13 13:51:40,146 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2024-11-13 13:51:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:40,147 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-11-13 13:51:40,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:51:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-11-13 13:51:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 13:51:40,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:40,148 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:40,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-13 13:51:40,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:40,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:40,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -666460771, now seen corresponding path program 1 times [2024-11-13 13:51:40,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:40,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798894241] [2024-11-13 13:51:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:40,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:40,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:40,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-13 13:51:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:40,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:51:40,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:51:40,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:42,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798894241] [2024-11-13 13:51:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798894241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:42,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:42,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2024-11-13 13:51:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766369715] [2024-11-13 13:51:42,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:42,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:51:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:51:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:51:42,610 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:43,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:43,345 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2024-11-13 13:51:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:51:43,346 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2024-11-13 13:51:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:43,349 INFO L225 Difference]: With dead ends: 96 [2024-11-13 13:51:43,349 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 13:51:43,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:51:43,350 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 58 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:43,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 542 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:51:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 13:51:43,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2024-11-13 13:51:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.3) internal successors, (65), 50 states have internal predecessors, (65), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 13:51:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 99 transitions. [2024-11-13 13:51:43,372 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 99 transitions. Word has length 36 [2024-11-13 13:51:43,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:43,372 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 99 transitions. [2024-11-13 13:51:43,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:43,372 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 99 transitions. [2024-11-13 13:51:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 13:51:43,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:43,373 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:43,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-13 13:51:43,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:43,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:43,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash -290767492, now seen corresponding path program 1 times [2024-11-13 13:51:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:43,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182814812] [2024-11-13 13:51:43,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:43,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:43,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:43,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:43,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-13 13:51:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:43,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:51:43,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:51:43,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:43,892 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182814812] [2024-11-13 13:51:43,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182814812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:43,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:43,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:51:43,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927273672] [2024-11-13 13:51:43,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:43,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:51:43,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:51:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:51:43,894 INFO L87 Difference]: Start difference. First operand 70 states and 99 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:51:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:44,201 INFO L93 Difference]: Finished difference Result 119 states and 164 transitions. [2024-11-13 13:51:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:51:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-13 13:51:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:44,203 INFO L225 Difference]: With dead ends: 119 [2024-11-13 13:51:44,203 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 13:51:44,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:51:44,205 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 22 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:44,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 482 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:51:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 13:51:44,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2024-11-13 13:51:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 13:51:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2024-11-13 13:51:44,225 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 38 [2024-11-13 13:51:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:44,226 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2024-11-13 13:51:44,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:51:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2024-11-13 13:51:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:51:44,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:44,227 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:44,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-13 13:51:44,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:44,429 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:44,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash 776164289, now seen corresponding path program 1 times [2024-11-13 13:51:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:44,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28140568] [2024-11-13 13:51:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:44,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:44,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:44,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:44,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-13 13:51:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:44,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:51:44,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:51:44,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:51:45,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:45,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28140568] [2024-11-13 13:51:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28140568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:45,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-13 13:51:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398039460] [2024-11-13 13:51:45,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:45,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:51:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:51:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:51:45,124 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 13:51:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:45,692 INFO L93 Difference]: Finished difference Result 108 states and 152 transitions. [2024-11-13 13:51:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:51:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 41 [2024-11-13 13:51:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:45,694 INFO L225 Difference]: With dead ends: 108 [2024-11-13 13:51:45,694 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 13:51:45,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:51:45,695 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 36 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:45,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 423 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:51:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 13:51:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 80. [2024-11-13 13:51:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 20 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-13 13:51:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2024-11-13 13:51:45,709 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 41 [2024-11-13 13:51:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:45,709 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2024-11-13 13:51:45,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-13 13:51:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2024-11-13 13:51:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 13:51:45,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:45,711 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:45,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-13 13:51:45,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:45,912 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:45,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1585695025, now seen corresponding path program 1 times [2024-11-13 13:51:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:45,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513839001] [2024-11-13 13:51:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:45,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:45,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-13 13:51:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:45,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:51:45,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:51:46,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:46,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:46,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513839001] [2024-11-13 13:51:46,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513839001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:46,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:46,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:51:46,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825835] [2024-11-13 13:51:46,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:46,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:51:46,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:46,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:51:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:51:46,010 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 13:51:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:46,028 INFO L93 Difference]: Finished difference Result 83 states and 116 transitions. [2024-11-13 13:51:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:51:46,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2024-11-13 13:51:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:46,029 INFO L225 Difference]: With dead ends: 83 [2024-11-13 13:51:46,030 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 13:51:46,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:51:46,031 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:46,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 13:51:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-13 13:51:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 20 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-13 13:51:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2024-11-13 13:51:46,043 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 43 [2024-11-13 13:51:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:46,043 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2024-11-13 13:51:46,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 13:51:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2024-11-13 13:51:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:51:46,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:46,045 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:46,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -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 [2024-11-13 13:51:46,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:46,245 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:46,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 264828296, now seen corresponding path program 1 times [2024-11-13 13:51:46,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:46,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236414958] [2024-11-13 13:51:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:46,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:46,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:46,250 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:46,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-13 13:51:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:46,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:46,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:51:46,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:46,366 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236414958] [2024-11-13 13:51:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236414958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:46,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:46,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828971053] [2024-11-13 13:51:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:46,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:46,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:46,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:46,368 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:46,406 INFO L93 Difference]: Finished difference Result 109 states and 153 transitions. [2024-11-13 13:51:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:46,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2024-11-13 13:51:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:46,408 INFO L225 Difference]: With dead ends: 109 [2024-11-13 13:51:46,408 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 13:51:46,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:46,409 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:46,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 13:51:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-13 13:51:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.25) internal successors, (75), 59 states have internal predecessors, (75), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (28), 22 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-13 13:51:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2024-11-13 13:51:46,419 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 46 [2024-11-13 13:51:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:46,420 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2024-11-13 13:51:46,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2024-11-13 13:51:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:51:46,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:46,421 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:46,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -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 [2024-11-13 13:51:46,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:46,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:46,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1015035382, now seen corresponding path program 1 times [2024-11-13 13:51:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:46,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466670443] [2024-11-13 13:51:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:46,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:46,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:46,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:46,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-13 13:51:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:46,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:51:46,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 13:51:47,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 13:51:48,610 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:48,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466670443] [2024-11-13 13:51:48,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466670443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:48,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:48,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2024-11-13 13:51:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822839833] [2024-11-13 13:51:48,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:48,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:51:48,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:51:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:51:48,614 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 19 states have internal predecessors, (49), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-13 13:51:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:50,192 INFO L93 Difference]: Finished difference Result 147 states and 202 transitions. [2024-11-13 13:51:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:51:50,193 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 19 states have internal predecessors, (49), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) Word has length 46 [2024-11-13 13:51:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:50,194 INFO L225 Difference]: With dead ends: 147 [2024-11-13 13:51:50,195 INFO L226 Difference]: Without dead ends: 110 [2024-11-13 13:51:50,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:51:50,196 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 80 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:50,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 752 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 13:51:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-13 13:51:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2024-11-13 13:51:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.25) internal successors, (75), 59 states have internal predecessors, (75), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (26), 22 states have call predecessors, (26), 18 states have call successors, (26) [2024-11-13 13:51:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2024-11-13 13:51:50,214 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 46 [2024-11-13 13:51:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:50,215 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2024-11-13 13:51:50,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 19 states have internal predecessors, (49), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-13 13:51:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2024-11-13 13:51:50,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:51:50,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:50,216 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:50,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-13 13:51:50,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:50,417 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:50,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash 566764772, now seen corresponding path program 1 times [2024-11-13 13:51:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896279964] [2024-11-13 13:51:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:50,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:50,419 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:50,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-13 13:51:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:50,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:50,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 13:51:50,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:50,525 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:50,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896279964] [2024-11-13 13:51:50,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896279964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:50,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:50,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145017259] [2024-11-13 13:51:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:50,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:50,527 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:50,561 INFO L93 Difference]: Finished difference Result 113 states and 159 transitions. [2024-11-13 13:51:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-13 13:51:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:50,563 INFO L225 Difference]: With dead ends: 113 [2024-11-13 13:51:50,563 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 13:51:50,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:50,564 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:50,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 13:51:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-13 13:51:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 61 states have internal predecessors, (77), 18 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (31), 23 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-13 13:51:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 126 transitions. [2024-11-13 13:51:50,590 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 126 transitions. Word has length 48 [2024-11-13 13:51:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:50,590 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 126 transitions. [2024-11-13 13:51:50,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 126 transitions. [2024-11-13 13:51:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:51:50,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:50,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:50,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-13 13:51:50,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:50,794 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:50,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash -713098906, now seen corresponding path program 1 times [2024-11-13 13:51:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402288474] [2024-11-13 13:51:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:50,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:50,798 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:50,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-13 13:51:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:50,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:51:50,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-13 13:51:51,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:52,922 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:52,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402288474] [2024-11-13 13:51:52,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402288474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:52,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402127895] [2024-11-13 13:51:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:52,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:52,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:52,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:52,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:51:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:53,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:51:53,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:51:53,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402127895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:53,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 15 [2024-11-13 13:51:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707766628] [2024-11-13 13:51:53,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:53,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:51:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:51:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:51:53,802 INFO L87 Difference]: Start difference. First operand 87 states and 126 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 13:51:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:54,689 INFO L93 Difference]: Finished difference Result 139 states and 200 transitions. [2024-11-13 13:51:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:51:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2024-11-13 13:51:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:54,692 INFO L225 Difference]: With dead ends: 139 [2024-11-13 13:51:54,692 INFO L226 Difference]: Without dead ends: 137 [2024-11-13 13:51:54,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:51:54,694 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 76 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:54,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 490 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:51:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-13 13:51:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 90. [2024-11-13 13:51:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.25) internal successors, (80), 62 states have internal predecessors, (80), 19 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (35), 25 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-13 13:51:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 134 transitions. [2024-11-13 13:51:54,711 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 134 transitions. Word has length 48 [2024-11-13 13:51:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:54,711 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 134 transitions. [2024-11-13 13:51:54,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 13:51:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 134 transitions. [2024-11-13 13:51:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:51:54,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:54,715 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:54,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-13 13:51:54,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:51:55,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:55,119 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:55,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash 475210250, now seen corresponding path program 1 times [2024-11-13 13:51:55,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:55,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301457630] [2024-11-13 13:51:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:55,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:55,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:55,121 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-13 13:51:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:55,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:51:55,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:51:55,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:51:55,807 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:55,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301457630] [2024-11-13 13:51:55,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301457630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:55,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:55,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2024-11-13 13:51:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924002787] [2024-11-13 13:51:55,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:55,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:51:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:51:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:51:55,809 INFO L87 Difference]: Start difference. First operand 90 states and 134 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:51:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:56,202 INFO L93 Difference]: Finished difference Result 110 states and 156 transitions. [2024-11-13 13:51:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:51:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2024-11-13 13:51:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:56,204 INFO L225 Difference]: With dead ends: 110 [2024-11-13 13:51:56,205 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 13:51:56,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:51:56,205 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 28 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:56,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 458 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:51:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 13:51:56,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2024-11-13 13:51:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 18 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (31), 22 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-13 13:51:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2024-11-13 13:51:56,223 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 48 [2024-11-13 13:51:56,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:56,224 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2024-11-13 13:51:56,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:51:56,224 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2024-11-13 13:51:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:51:56,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:56,226 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:56,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-13 13:51:56,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:56,427 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:56,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1426490055, now seen corresponding path program 1 times [2024-11-13 13:51:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:56,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670644423] [2024-11-13 13:51:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:56,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:56,429 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:56,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-13 13:51:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:56,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:51:56,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:51:56,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:51:56,925 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670644423] [2024-11-13 13:51:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670644423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:56,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:56,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2024-11-13 13:51:56,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112368301] [2024-11-13 13:51:56,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:56,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:51:56,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:56,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:51:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:51:56,928 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 13:51:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:57,369 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2024-11-13 13:51:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:51:57,370 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 48 [2024-11-13 13:51:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:57,371 INFO L225 Difference]: With dead ends: 117 [2024-11-13 13:51:57,371 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 13:51:57,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:51:57,372 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 27 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:57,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 493 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:51:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 13:51:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-13 13:51:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 53 states have internal predecessors, (60), 14 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (23), 16 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-13 13:51:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2024-11-13 13:51:57,383 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 48 [2024-11-13 13:51:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:57,383 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2024-11-13 13:51:57,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 13:51:57,384 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2024-11-13 13:51:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 13:51:57,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:57,387 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:57,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-13 13:51:57,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:57,588 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:57,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1224190415, now seen corresponding path program 1 times [2024-11-13 13:51:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764220808] [2024-11-13 13:51:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:57,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:57,591 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:57,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-13 13:51:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:57,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:51:57,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:51:57,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:51:58,223 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:58,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764220808] [2024-11-13 13:51:58,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764220808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:58,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:58,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2024-11-13 13:51:58,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73881217] [2024-11-13 13:51:58,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:58,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:51:58,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:58,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:51:58,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:51:58,224 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-13 13:51:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:58,495 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2024-11-13 13:51:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:51:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 48 [2024-11-13 13:51:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:58,497 INFO L225 Difference]: With dead ends: 86 [2024-11-13 13:51:58,497 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 13:51:58,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:51:58,498 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 20 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:58,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 455 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:51:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 13:51:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-13 13:51:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 13 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-13 13:51:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-13 13:51:58,504 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 48 [2024-11-13 13:51:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:58,505 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-13 13:51:58,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-13 13:51:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-13 13:51:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:51:58,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:58,506 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:58,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-13 13:51:58,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:58,709 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:58,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2012362344, now seen corresponding path program 1 times [2024-11-13 13:51:58,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:58,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346038257] [2024-11-13 13:51:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:58,712 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:58,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-13 13:51:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:58,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:58,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 13:51:58,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:58,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:58,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346038257] [2024-11-13 13:51:58,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346038257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:58,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317479681] [2024-11-13 13:51:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:58,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:58,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:58,836 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:58,863 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2024-11-13 13:51:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2024-11-13 13:51:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:58,865 INFO L225 Difference]: With dead ends: 98 [2024-11-13 13:51:58,865 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 13:51:58,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:58,866 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:58,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 13:51:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-13 13:51:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 13 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (22), 15 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-13 13:51:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-13 13:51:58,873 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 49 [2024-11-13 13:51:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:58,881 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-13 13:51:58,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-13 13:51:58,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 13:51:58,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:58,882 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:58,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-13 13:51:59,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:59,083 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:59,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash -54246432, now seen corresponding path program 1 times [2024-11-13 13:51:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:59,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440198153] [2024-11-13 13:51:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:59,087 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:59,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-13 13:51:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:59,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:51:59,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 13:51:59,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:59,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440198153] [2024-11-13 13:51:59,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440198153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:59,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:59,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:51:59,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712797049] [2024-11-13 13:51:59,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:59,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:51:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:51:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:59,201 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:59,229 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2024-11-13 13:51:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:51:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2024-11-13 13:51:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:59,230 INFO L225 Difference]: With dead ends: 96 [2024-11-13 13:51:59,230 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 13:51:59,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:51:59,231 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:59,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:51:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 13:51:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-13 13:51:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (18), 15 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-13 13:51:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-11-13 13:51:59,237 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 50 [2024-11-13 13:51:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:59,237 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-11-13 13:51:59,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:51:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-11-13 13:51:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 13:51:59,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:59,238 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:59,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-11-13 13:51:59,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:59,444 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:59,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1051318785, now seen corresponding path program 1 times [2024-11-13 13:51:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217811131] [2024-11-13 13:51:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:59,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:59,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:59,451 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:59,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-13 13:51:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:59,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:51:59,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:59,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:51:59,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 13:52:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:52:00,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:52:00,346 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217811131] [2024-11-13 13:52:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217811131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-13 13:52:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430793185] [2024-11-13 13:52:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:00,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:52:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:52:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:52:00,348 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 13:52:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:01,340 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-11-13 13:52:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:52:01,341 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2024-11-13 13:52:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:01,342 INFO L225 Difference]: With dead ends: 70 [2024-11-13 13:52:01,342 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 13:52:01,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:52:01,343 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:01,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 350 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:52:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 13:52:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-11-13 13:52:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 34 states have internal predecessors, (41), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 13:52:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-13 13:52:01,348 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 50 [2024-11-13 13:52:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:01,349 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-13 13:52:01,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 13:52:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-13 13:52:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 13:52:01,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:01,350 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:01,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-13 13:52:01,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:01,554 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:01,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1474230291, now seen corresponding path program 1 times [2024-11-13 13:52:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83931383] [2024-11-13 13:52:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:01,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:01,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:01,557 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:01,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-13 13:52:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:01,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 13:52:01,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:52:02,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 13:52:03,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:03,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83931383] [2024-11-13 13:52:03,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83931383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:52:03,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:03,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2024-11-13 13:52:03,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739848311] [2024-11-13 13:52:03,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:03,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:52:03,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:52:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:52:03,657 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-13 13:52:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:04,536 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-13 13:52:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:52:04,537 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 55 [2024-11-13 13:52:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:04,538 INFO L225 Difference]: With dead ends: 78 [2024-11-13 13:52:04,538 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 13:52:04,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:52:04,539 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:04,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 273 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:52:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 13:52:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-13 13:52:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-13 13:52:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-13 13:52:04,544 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 55 [2024-11-13 13:52:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:04,544 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-13 13:52:04,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-13 13:52:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-13 13:52:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 13:52:04,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:04,546 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:04,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-11-13 13:52:04,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:04,749 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:04,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1189470342, now seen corresponding path program 1 times [2024-11-13 13:52:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968071468] [2024-11-13 13:52:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:04,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:04,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:04,752 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-13 13:52:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:04,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:52:04,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:05,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:52:05,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 13:52:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:52:05,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:52:05,072 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968071468] [2024-11-13 13:52:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968071468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:05,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:05,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:52:05,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130953757] [2024-11-13 13:52:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:05,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:52:05,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:05,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:52:05,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:52:05,073 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:05,445 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-11-13 13:52:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:52:05,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2024-11-13 13:52:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:05,451 INFO L225 Difference]: With dead ends: 66 [2024-11-13 13:52:05,451 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 13:52:05,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:52:05,453 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:05,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 263 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:52:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 13:52:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-13 13:52:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 13:52:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-13 13:52:05,458 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 60 [2024-11-13 13:52:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:05,459 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-13 13:52:05,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-13 13:52:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 13:52:05,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:05,460 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:05,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-11-13 13:52:05,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:05,660 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:05,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash 775869114, now seen corresponding path program 1 times [2024-11-13 13:52:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:05,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049772633] [2024-11-13 13:52:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:05,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:05,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:05,663 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:05,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-13 13:52:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:05,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:52:05,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:52:06,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:52:06,018 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:06,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049772633] [2024-11-13 13:52:06,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049772633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:06,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:06,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:52:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186944333] [2024-11-13 13:52:06,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:06,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:52:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:06,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:52:06,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:52:06,020 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:06,511 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-13 13:52:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:52:06,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2024-11-13 13:52:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:06,513 INFO L225 Difference]: With dead ends: 68 [2024-11-13 13:52:06,513 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 13:52:06,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:52:06,514 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:06,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 270 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:52:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 13:52:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-13 13:52:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 13:52:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-13 13:52:06,519 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 61 [2024-11-13 13:52:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:06,519 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-13 13:52:06,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-13 13:52:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 13:52:06,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:06,520 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:06,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-13 13:52:06,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:06,721 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:06,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1120230154, now seen corresponding path program 1 times [2024-11-13 13:52:06,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:06,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484655792] [2024-11-13 13:52:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:06,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:06,723 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:06,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-13 13:52:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:06,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:52:06,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:52:07,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:52:07,058 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484655792] [2024-11-13 13:52:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484655792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:07,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:07,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:52:07,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085575178] [2024-11-13 13:52:07,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:07,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:52:07,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:52:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:52:07,060 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:07,514 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-13 13:52:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:52:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2024-11-13 13:52:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:07,516 INFO L225 Difference]: With dead ends: 68 [2024-11-13 13:52:07,516 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 13:52:07,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:52:07,517 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:07,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 270 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:52:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 13:52:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-13 13:52:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 13:52:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-13 13:52:07,522 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2024-11-13 13:52:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:07,522 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-13 13:52:07,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-13 13:52:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 13:52:07,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:07,523 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:07,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-11-13 13:52:07,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:07,724 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:07,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash -808382274, now seen corresponding path program 1 times [2024-11-13 13:52:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839879669] [2024-11-13 13:52:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:07,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:07,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:07,727 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:07,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-13 13:52:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:07,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:52:07,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:52:08,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:52:08,019 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839879669] [2024-11-13 13:52:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839879669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:08,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 13:52:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267386662] [2024-11-13 13:52:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:08,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:52:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:52:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:52:08,020 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:08,358 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-13 13:52:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:52:08,358 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2024-11-13 13:52:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:08,359 INFO L225 Difference]: With dead ends: 65 [2024-11-13 13:52:08,359 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 13:52:08,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:52:08,360 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:08,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 262 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:52:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 13:52:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-11-13 13:52:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 13:52:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-13 13:52:08,365 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 63 [2024-11-13 13:52:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:08,365 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-13 13:52:08,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 13:52:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-13 13:52:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 13:52:08,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:08,366 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:08,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-13 13:52:08,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:08,567 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:08,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1190520961, now seen corresponding path program 1 times [2024-11-13 13:52:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868514575] [2024-11-13 13:52:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:08,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:08,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:08,571 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:08,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-13 13:52:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:08,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:52:08,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:08,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 13:52:08,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 13:52:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-13 13:52:08,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-13 13:52:09,290 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868514575] [2024-11-13 13:52:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868514575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:52:09,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-13 13:52:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925263583] [2024-11-13 13:52:09,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:09,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:52:09,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:52:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:52:09,293 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 15 states, 13 states have (on average 4.0) internal successors, (52), 15 states have internal predecessors, (52), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-13 13:52:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:10,202 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-11-13 13:52:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:52:10,203 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 15 states have internal predecessors, (52), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 63 [2024-11-13 13:52:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:10,203 INFO L225 Difference]: With dead ends: 64 [2024-11-13 13:52:10,203 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 13:52:10,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:52:10,204 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:10,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 291 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:52:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 13:52:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-13 13:52:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 9 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 13:52:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-13 13:52:10,211 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 63 [2024-11-13 13:52:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:10,212 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-13 13:52:10,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 15 states have internal predecessors, (52), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-13 13:52:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-13 13:52:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 13:52:10,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:10,215 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:10,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-13 13:52:10,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:10,418 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:10,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:10,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1409375679, now seen corresponding path program 1 times [2024-11-13 13:52:10,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116895912] [2024-11-13 13:52:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:10,421 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:10,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-13 13:52:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:10,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:52:10,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:52:10,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:52:10,528 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116895912] [2024-11-13 13:52:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116895912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:52:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:52:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:52:10,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975726018] [2024-11-13 13:52:10,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:52:10,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:52:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:52:10,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:52:10,529 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:52:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:10,587 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2024-11-13 13:52:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:52:10,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-13 13:52:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:10,589 INFO L225 Difference]: With dead ends: 66 [2024-11-13 13:52:10,589 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 13:52:10,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:52:10,590 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:10,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:52:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 13:52:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-13 13:52:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 13:52:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-13 13:52:10,594 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 63 [2024-11-13 13:52:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:10,594 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-13 13:52:10,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:52:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-13 13:52:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 13:52:10,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:52:10,595 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:10,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2024-11-13 13:52:10,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:10,796 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:52:10,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:52:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1840783375, now seen corresponding path program 1 times [2024-11-13 13:52:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:52:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676811641] [2024-11-13 13:52:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:52:10,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:52:10,798 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:52:10,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-13 13:52:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:52:10,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:52:10,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 13:52:11,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:52:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 13:52:11,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:52:11,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676811641] [2024-11-13 13:52:11,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676811641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:52:11,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:52:11,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-13 13:52:11,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334581061] [2024-11-13 13:52:11,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:52:11,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:52:11,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:52:11,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:52:11,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:52:11,312 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-13 13:52:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:52:11,491 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-13 13:52:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:52:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 64 [2024-11-13 13:52:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:52:11,492 INFO L225 Difference]: With dead ends: 46 [2024-11-13 13:52:11,492 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 13:52:11,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:52:11,493 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:52:11,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 224 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:52:11,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 13:52:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 13:52:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:52:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 13:52:11,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2024-11-13 13:52:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:52:11,494 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 13:52:11,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-13 13:52:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 13:52:11,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 13:52:11,497 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 13:52:11,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 13:52:11,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-13 13:52:11,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:52:11,701 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:52:11,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 13:52:13,037 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:52:13,060 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~fp.eq~32 [2024-11-13 13:52:13,061 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~fp.eq~32 [2024-11-13 13:52:13,094 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-13 13:52:13,094 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-13 13:52:13,096 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~fp.eq~32 [2024-11-13 13:52:13,099 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unable to backtranslate infinite floats [2024-11-13 13:52:13,099 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unable to backtranslate infinite floats [2024-11-13 13:52:13,099 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-13 13:52:13,099 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-13 13:52:13,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:52:13 BoogieIcfgContainer [2024-11-13 13:52:13,101 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:52:13,101 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:52:13,101 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:52:13,101 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:52:13,106 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:51:37" (3/4) ... [2024-11-13 13:52:13,108 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:52:13,116 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2024-11-13 13:52:13,117 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2024-11-13 13:52:13,124 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-13 13:52:13,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-13 13:52:13,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:52:13,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:52:13,157 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\old(x) == x) [2024-11-13 13:52:13,184 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\old(x) == x) [2024-11-13 13:52:13,237 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:52:13,237 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:52:13,237 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:52:13,238 INFO L158 Benchmark]: Toolchain (without parser) took 36646.74ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 35.4MB in the end (delta: 25.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-13 13:52:13,239 INFO L158 Benchmark]: CDTParser took 1.86ms. Allocated memory is still 83.9MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:52:13,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.68ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 48.2MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:52:13,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 83.9MB. Free memory was 48.2MB in the beginning and 46.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:52:13,240 INFO L158 Benchmark]: Boogie Preprocessor took 45.86ms. Allocated memory is still 83.9MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:52:13,240 INFO L158 Benchmark]: RCFGBuilder took 545.64ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 29.9MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:52:13,242 INFO L158 Benchmark]: TraceAbstraction took 35576.82ms. Allocated memory is still 83.9MB. Free memory was 29.3MB in the beginning and 40.7MB in the end (delta: -11.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-13 13:52:13,242 INFO L158 Benchmark]: Witness Printer took 136.24ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 35.4MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:52:13,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.86ms. Allocated memory is still 83.9MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.68ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 48.2MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 83.9MB. Free memory was 48.2MB in the beginning and 46.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.86ms. Allocated memory is still 83.9MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 545.64ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 29.9MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 35576.82ms. Allocated memory is still 83.9MB. Free memory was 29.3MB in the beginning and 40.7MB in the end (delta: -11.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 136.24ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 35.4MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~fp.eq~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~fp.eq~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~fp.eq~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unable to backtranslate infinite floats - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unable to backtranslate infinite floats - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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 - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 83]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 34.1s, OverallIterations: 28, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 529 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 467 mSDsluCounter, 8384 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6821 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3842 IncrementalHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 1563 mSDtfsCounter, 3842 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1916 GetRequests, 1642 SyntacticMatches, 4 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=14, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 161 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 1371 NumberOfCodeBlocks, 1371 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1782 ConstructedInterpolants, 12 QuantifiedInterpolants, 6017 SizeOfPredicates, 47 NumberOfNonLiveVariables, 3124 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 38 InterpolantComputations, 18 PerfectInterpolantSequences, 948/1076 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (\old(x) == x) - ProcedureContractResult [Line: 59]: Procedure Contract for isnan_float Derived contract for procedure isnan_float. Ensures: ((0 == \result) || (1 == \result)) - ProcedureContractResult [Line: 14]: Procedure Contract for __fpclassify_float Derived contract for procedure __fpclassify_float. Ensures: ((((((((((x == 0.0) || (0.0 == x)) && (2 == \result)) || (1 == \result)) || (3 == \result)) || (4 == \result)) || (((x == 0.0) || (0.0 == x)) && ((((1 == \result) || (3 == \result)) || (4 == \result)) || (2 == \result)))) || (0 == \result)) || ((((((x == 0.0) || (0.0 == x)) && (2 == \result)) || (1 == \result)) || (3 == \result)) || (4 == \result))) || ((((((x == 0.0) || (0.0 == x)) && (2 == \result)) || (1 == \result)) || (3 == \result)) || (4 == \result))) RESULT: Ultimate proved your program to be correct! [2024-11-13 13:52:13,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a445eb5-769f-4ab0-96a7-968964637615/bin/uautomizer-verify-qhAvR1uOyd/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 Writing output log to file Ultimate.log Result: TRUE