./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya --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 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:40:52,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:40:52,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:40:52,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:40:52,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:40:52,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:40:52,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:40:52,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:40:52,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:40:52,284 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:40:52,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:40:52,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:40:52,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:40:52,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:40:52,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:40:52,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:40:52,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:40:52,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:40:52,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:40:52,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:40:52,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:40:52,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:40:52,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:40:52,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:40:52,295 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:40:52,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:40:52,296 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:40:52,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:40:52,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:40:52,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:40:52,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:40:52,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:40:52,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:40:52,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:40:52,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:40:52,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:40:52,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:40:52,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:40:52,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:40:52,299 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:40:52,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:40:52,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:40:52,300 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 [2023-11-29 05:40:52,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:40:52,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:40:52,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:40:52,559 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:40:52,559 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:40:52,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2023-11-29 05:40:55,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:40:55,477 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:40:55,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2023-11-29 05:40:55,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data/7b4244368/7ef9e19c0cd743ee9f32f5afa690debe/FLAGfe8b206bf [2023-11-29 05:40:55,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data/7b4244368/7ef9e19c0cd743ee9f32f5afa690debe [2023-11-29 05:40:55,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:40:55,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:40:55,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:40:55,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:40:55,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:40:55,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@685f8b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55, skipping insertion in model container [2023-11-29 05:40:55,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,555 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:40:55,690 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2023-11-29 05:40:55,696 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2023-11-29 05:40:55,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:40:55,740 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:40:55,753 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2023-11-29 05:40:55,755 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2023-11-29 05:40:55,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:40:55,798 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:40:55,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55 WrapperNode [2023-11-29 05:40:55,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:40:55,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:40:55,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:40:55,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:40:55,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,845 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-11-29 05:40:55,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:40:55,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:40:55,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:40:55,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:40:55,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,875 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:40:55,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:40:55,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:40:55,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:40:55,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:40:55,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (1/1) ... [2023-11-29 05:40:55,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:40:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:55,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:40:55,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:40:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:40:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-29 05:40:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-29 05:40:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:40:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:40:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:40:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 05:40:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 05:40:56,033 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:40:56,035 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:40:56,351 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:40:56,378 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:40:56,378 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:40:56,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:40:56 BoogieIcfgContainer [2023-11-29 05:40:56,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:40:56,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:40:56,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:40:56,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:40:56,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:40:55" (1/3) ... [2023-11-29 05:40:56,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d01470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:40:56, skipping insertion in model container [2023-11-29 05:40:56,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:40:55" (2/3) ... [2023-11-29 05:40:56,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d01470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:40:56, skipping insertion in model container [2023-11-29 05:40:56,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:40:56" (3/3) ... [2023-11-29 05:40:56,388 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_5a.c.cil.c [2023-11-29 05:40:56,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:40:56,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:40:56,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:40:56,451 INFO L357 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, mHoare=true, 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;@a996d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:40:56,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:40:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 65 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:40:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 05:40:56,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:56,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:40:56,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:56,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash 257583372, now seen corresponding path program 1 times [2023-11-29 05:40:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:56,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232291864] [2023-11-29 05:40:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:56,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:40:56,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:40:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:40:56,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:40:56,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:40:56,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-29 05:40:56,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 05:40:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:40:56,594 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:40:56,599 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:40:56,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:40:56 BoogieIcfgContainer [2023-11-29 05:40:56,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:40:56,614 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:40:56,614 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:40:56,615 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:40:56,615 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:40:56" (3/4) ... [2023-11-29 05:40:56,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 05:40:56,618 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:40:56,619 INFO L158 Benchmark]: Toolchain (without parser) took 1119.22ms. Allocated memory is still 165.7MB. Free memory was 122.3MB in the beginning and 83.9MB in the end (delta: 38.4MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2023-11-29 05:40:56,620 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:40:56,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.54ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 124.5MB in the end (delta: -2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:40:56,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.46ms. Allocated memory is still 165.7MB. Free memory was 124.5MB in the beginning and 122.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:40:56,622 INFO L158 Benchmark]: Boogie Preprocessor took 48.54ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:40:56,622 INFO L158 Benchmark]: RCFGBuilder took 483.73ms. Allocated memory is still 165.7MB. Free memory was 119.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 05:40:56,623 INFO L158 Benchmark]: TraceAbstraction took 231.66ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 83.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 05:40:56,623 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 165.7MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:40:56,627 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.54ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 124.5MB in the end (delta: -2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.46ms. Allocated memory is still 165.7MB. Free memory was 124.5MB in the beginning and 122.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.54ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 483.73ms. Allocated memory is still 165.7MB. Free memory was 119.6MB in the beginning and 98.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 231.66ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 83.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 165.7MB. Free memory is still 83.9MB. 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: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: 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, 72 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 [2023-11-29 05:40:56,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya --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 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:40:58,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:40:58,653 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 05:40:58,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:40:58,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:40:58,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:40:58,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:40:58,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:40:58,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:40:58,699 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:40:58,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:40:58,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:40:58,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:40:58,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:40:58,702 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:40:58,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:40:58,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:40:58,704 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:40:58,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:40:58,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:40:58,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:40:58,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:40:58,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:40:58,707 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:40:58,707 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 05:40:58,708 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 05:40:58,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:40:58,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:40:58,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:40:58,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:40:58,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:40:58,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:40:58,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:40:58,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:40:58,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:40:58,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:40:58,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:40:58,712 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 05:40:58,712 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 05:40:58,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:40:58,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:40:58,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:40:58,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:40:58,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:40:58,714 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 05:40:58,714 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 [2023-11-29 05:40:59,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:40:59,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:40:59,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:40:59,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:40:59,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:40:59,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2023-11-29 05:41:01,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:41:02,080 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:41:02,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2023-11-29 05:41:02,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data/9864d37c9/1867b69835264714be030a5106ea2f2b/FLAG8bb44a48b [2023-11-29 05:41:02,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/data/9864d37c9/1867b69835264714be030a5106ea2f2b [2023-11-29 05:41:02,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:41:02,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:41:02,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:41:02,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:41:02,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:41:02,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e88293b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02, skipping insertion in model container [2023-11-29 05:41:02,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,154 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:41:02,330 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2023-11-29 05:41:02,337 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2023-11-29 05:41:02,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:41:02,390 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:41:02,406 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2023-11-29 05:41:02,408 WARN L240 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_a65a5117-8e98-4496-a900-e94bfe9553d9/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2023-11-29 05:41:02,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:41:02,450 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:41:02,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02 WrapperNode [2023-11-29 05:41:02,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:41:02,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:41:02,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:41:02,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:41:02,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,498 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-29 05:41:02,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:41:02,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:41:02,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:41:02,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:41:02,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,537 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:41:02,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:41:02,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:41:02,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:41:02,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:41:02,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (1/1) ... [2023-11-29 05:41:02,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:41:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:02,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:41:02,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:41:02,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:41:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 05:41:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-29 05:41:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-29 05:41:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:41:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:41:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 05:41:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 05:41:02,704 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:41:02,706 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:41:07,215 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:41:07,237 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:41:07,238 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:41:07,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:41:07 BoogieIcfgContainer [2023-11-29 05:41:07,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:41:07,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:41:07,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:41:07,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:41:07,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:41:02" (1/3) ... [2023-11-29 05:41:07,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70668f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:41:07, skipping insertion in model container [2023-11-29 05:41:07,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:41:02" (2/3) ... [2023-11-29 05:41:07,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70668f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:41:07, skipping insertion in model container [2023-11-29 05:41:07,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:41:07" (3/3) ... [2023-11-29 05:41:07,247 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_5a.c.cil.c [2023-11-29 05:41:07,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:41:07,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:41:07,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:41:07,314 INFO L357 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, mHoare=true, 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;@6bb9f7d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:41:07,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:41:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 48 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:41:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 05:41:07,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:07,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:41:07,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:07,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1797094946, now seen corresponding path program 1 times [2023-11-29 05:41:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:41:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277069449] [2023-11-29 05:41:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:07,339 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 [2023-11-29 05:41:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:41:07,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:41:07,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:41:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:07,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:41:07,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:07,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:07,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:41:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277069449] [2023-11-29 05:41:07,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277069449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:07,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:07,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:41:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100760224] [2023-11-29 05:41:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:41:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:41:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:41:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:41:07,854 INFO L87 Difference]: Start difference. First operand has 55 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 48 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-29 05:41:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:07,905 INFO L93 Difference]: Finished difference Result 106 states and 164 transitions. [2023-11-29 05:41:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:41:07,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2023-11-29 05:41:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:07,917 INFO L225 Difference]: With dead ends: 106 [2023-11-29 05:41:07,917 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 05:41:07,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:41:07,925 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:07,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 05:41:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-29 05:41:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 05:41:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2023-11-29 05:41:07,967 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 6 [2023-11-29 05:41:07,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:07,968 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2023-11-29 05:41:07,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-29 05:41:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2023-11-29 05:41:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 05:41:07,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:07,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:41:07,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 05:41:08,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:41:08,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:08,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1797035364, now seen corresponding path program 1 times [2023-11-29 05:41:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:41:08,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679318282] [2023-11-29 05:41:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:08,186 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 [2023-11-29 05:41:08,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:41:08,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:41:08,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:48:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:53,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:48:53,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:02,390 WARN L293 SmtUtils]: Spent 8.28s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:49:08,824 WARN L293 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:49:16,961 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:49:21,033 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-11-29 05:49:37,462 WARN L293 SmtUtils]: Spent 8.28s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:49:45,589 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:49:53,888 WARN L293 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:50:06,079 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:50:14,351 WARN L293 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:50:21,480 WARN L293 SmtUtils]: Spent 7.13s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:50:25,599 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 2797.0 2000.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2023-11-29 05:50:29,644 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 2797.0 2000.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2023-11-29 05:50:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:50:29,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:29,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679318282] [2023-11-29 05:50:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679318282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:29,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:29,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:50:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408254583] [2023-11-29 05:50:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:29,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:50:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:50:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2023-11-29 05:50:29,648 INFO L87 Difference]: Start difference. First operand 49 states and 68 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2023-11-29 05:50:33,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:50:38,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:50:42,137 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-11-29 05:50:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:42,324 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2023-11-29 05:50:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) Word has length 6 [2023-11-29 05:50:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:42,326 INFO L225 Difference]: With dead ends: 49 [2023-11-29 05:50:42,326 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 05:50:42,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2023-11-29 05:50:42,328 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:42,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 162 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 136 Unchecked, 8.4s Time] [2023-11-29 05:50:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 05:50:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-29 05:50:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 05:50:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 63 transitions. [2023-11-29 05:50:42,336 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 63 transitions. Word has length 6 [2023-11-29 05:50:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:42,337 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 63 transitions. [2023-11-29 05:50:42,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2023-11-29 05:50:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2023-11-29 05:50:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 05:50:42,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:42,340 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-29 05:50:42,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:42,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:42,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:42,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2006561597, now seen corresponding path program 1 times [2023-11-29 05:50:42,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806376726] [2023-11-29 05:50:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:42,543 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 [2023-11-29 05:50:42,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:42,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:42,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:42,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:50:42,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:42,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:42,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:42,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806376726] [2023-11-29 05:50:42,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806376726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:42,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:42,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:50:42,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933646588] [2023-11-29 05:50:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:42,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:50:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:50:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:50:42,711 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:43,084 INFO L93 Difference]: Finished difference Result 97 states and 143 transitions. [2023-11-29 05:50:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:50:43,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-29 05:50:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:43,087 INFO L225 Difference]: With dead ends: 97 [2023-11-29 05:50:43,087 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 05:50:43,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:50:43,089 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:43,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:50:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 05:50:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2023-11-29 05:50:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:50:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2023-11-29 05:50:43,101 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 37 [2023-11-29 05:50:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:43,101 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2023-11-29 05:50:43,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2023-11-29 05:50:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 05:50:43,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:43,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-29 05:50:43,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:43,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:43,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash -744847675, now seen corresponding path program 1 times [2023-11-29 05:50:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613901309] [2023-11-29 05:50:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:43,306 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 [2023-11-29 05:50:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:43,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:43,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:43,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:50:43,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:43,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:43,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613901309] [2023-11-29 05:50:43,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613901309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:43,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:43,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:50:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976955174] [2023-11-29 05:50:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:43,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:50:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:50:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:50:43,499 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:43,849 INFO L93 Difference]: Finished difference Result 99 states and 144 transitions. [2023-11-29 05:50:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:50:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-11-29 05:50:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:43,852 INFO L225 Difference]: With dead ends: 99 [2023-11-29 05:50:43,852 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 05:50:43,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:50:43,854 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:43,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 140 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:50:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 05:50:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2023-11-29 05:50:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 05:50:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2023-11-29 05:50:43,864 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 40 [2023-11-29 05:50:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:43,864 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2023-11-29 05:50:43,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2023-11-29 05:50:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 05:50:43,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:43,866 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-29 05:50:43,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 05:50:44,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:44,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:44,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1911535032, now seen corresponding path program 1 times [2023-11-29 05:50:44,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:44,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926276552] [2023-11-29 05:50:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:44,068 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 [2023-11-29 05:50:44,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:44,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:44,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:50:44,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:44,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:44,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:44,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926276552] [2023-11-29 05:50:44,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926276552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:44,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:44,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:50:44,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631290010] [2023-11-29 05:50:44,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:44,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:50:44,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:50:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:50:44,255 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:44,642 INFO L93 Difference]: Finished difference Result 106 states and 154 transitions. [2023-11-29 05:50:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:50:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-29 05:50:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:44,644 INFO L225 Difference]: With dead ends: 106 [2023-11-29 05:50:44,644 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 05:50:44,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:50:44,646 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 16 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:44,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 131 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:50:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 05:50:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2023-11-29 05:50:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 05:50:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 75 transitions. [2023-11-29 05:50:44,654 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 75 transitions. Word has length 41 [2023-11-29 05:50:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:44,654 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 75 transitions. [2023-11-29 05:50:44,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 75 transitions. [2023-11-29 05:50:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 05:50:44,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:44,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-29 05:50:44,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 05:50:44,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:44,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:44,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:44,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1998722342, now seen corresponding path program 1 times [2023-11-29 05:50:44,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:44,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512755123] [2023-11-29 05:50:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:44,857 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 [2023-11-29 05:50:44,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:44,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:44,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:50:44,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:45,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:45,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:45,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512755123] [2023-11-29 05:50:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512755123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:50:45,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625210031] [2023-11-29 05:50:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:45,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:50:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:50:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:50:45,109 INFO L87 Difference]: Start difference. First operand 53 states and 75 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:45,749 INFO L93 Difference]: Finished difference Result 113 states and 164 transitions. [2023-11-29 05:50:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:45,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-29 05:50:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:45,752 INFO L225 Difference]: With dead ends: 113 [2023-11-29 05:50:45,752 INFO L226 Difference]: Without dead ends: 67 [2023-11-29 05:50:45,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:50:45,754 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:45,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 170 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:50:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-29 05:50:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2023-11-29 05:50:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 46 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 05:50:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 77 transitions. [2023-11-29 05:50:45,764 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 77 transitions. Word has length 42 [2023-11-29 05:50:45,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:45,764 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 77 transitions. [2023-11-29 05:50:45,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:50:45,765 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 77 transitions. [2023-11-29 05:50:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 05:50:45,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:45,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-11-29 05:50:45,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:45,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:45,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:45,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1306723989, now seen corresponding path program 1 times [2023-11-29 05:50:45,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58590090] [2023-11-29 05:50:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:45,968 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 [2023-11-29 05:50:45,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:45,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:45,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:46,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:50:46,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:46,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:50:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:50:46,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58590090] [2023-11-29 05:50:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58590090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:50:46,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:50:46,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 05:50:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855394522] [2023-11-29 05:50:46,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:50:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:50:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:50:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:50:46,698 INFO L87 Difference]: Start difference. First operand 54 states and 77 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:50:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:47,490 INFO L93 Difference]: Finished difference Result 130 states and 192 transitions. [2023-11-29 05:50:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:50:47,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-11-29 05:50:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:47,493 INFO L225 Difference]: With dead ends: 130 [2023-11-29 05:50:47,493 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 05:50:47,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:50:47,495 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 49 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:47,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 168 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:50:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 05:50:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2023-11-29 05:50:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 54 states have internal predecessors, (77), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 05:50:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 90 transitions. [2023-11-29 05:50:47,510 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 90 transitions. Word has length 43 [2023-11-29 05:50:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:47,511 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 90 transitions. [2023-11-29 05:50:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:50:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 90 transitions. [2023-11-29 05:50:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 05:50:47,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:47,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-11-29 05:50:47,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:47,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:47,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2125864714, now seen corresponding path program 1 times [2023-11-29 05:50:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759561357] [2023-11-29 05:50:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:47,715 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 [2023-11-29 05:50:47,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:47,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:47,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:47,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:50:47,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:48,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:50:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:50:48,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:48,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759561357] [2023-11-29 05:50:48,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759561357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:50:48,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:50:48,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 05:50:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6610857] [2023-11-29 05:50:48,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:50:48,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:50:48,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:48,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:50:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:50:48,649 INFO L87 Difference]: Start difference. First operand 62 states and 90 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:50:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:49,966 INFO L93 Difference]: Finished difference Result 146 states and 218 transitions. [2023-11-29 05:50:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:50:49,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2023-11-29 05:50:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:49,968 INFO L225 Difference]: With dead ends: 146 [2023-11-29 05:50:49,968 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 05:50:49,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:50:49,970 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 76 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:49,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 228 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:50:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 05:50:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2023-11-29 05:50:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 58 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 05:50:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2023-11-29 05:50:49,983 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 45 [2023-11-29 05:50:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:49,984 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2023-11-29 05:50:49,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:50:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2023-11-29 05:50:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 05:50:49,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:49,986 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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] [2023-11-29 05:50:49,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:50,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:50,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash -520854843, now seen corresponding path program 2 times [2023-11-29 05:50:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:50,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4983360] [2023-11-29 05:50:50,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:50:50,188 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 [2023-11-29 05:50:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:50,189 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:50,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:50,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:50:50,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:50,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:50:50,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 05:50:50,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:50,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4983360] [2023-11-29 05:50:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4983360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:50,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:50:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464632139] [2023-11-29 05:50:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:50:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:50:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:50:50,487 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:50:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:50,925 INFO L93 Difference]: Finished difference Result 104 states and 152 transitions. [2023-11-29 05:50:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:50:50,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2023-11-29 05:50:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:50,928 INFO L225 Difference]: With dead ends: 104 [2023-11-29 05:50:50,928 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 05:50:50,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:50:50,929 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 16 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:50,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 310 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:50:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 05:50:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2023-11-29 05:50:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 68 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:50:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 112 transitions. [2023-11-29 05:50:50,941 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 112 transitions. Word has length 52 [2023-11-29 05:50:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:50,941 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 112 transitions. [2023-11-29 05:50:50,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:50:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 112 transitions. [2023-11-29 05:50:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 05:50:50,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:50,943 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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] [2023-11-29 05:50:50,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:51,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:51,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:51,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash 159203527, now seen corresponding path program 1 times [2023-11-29 05:50:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869834877] [2023-11-29 05:50:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:51,145 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 [2023-11-29 05:50:51,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:51,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:51,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:51,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:50:51,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:51,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:50:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:50:52,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869834877] [2023-11-29 05:50:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869834877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:50:52,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:50:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 05:50:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692980879] [2023-11-29 05:50:52,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:50:52,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:50:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:50:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:50:52,914 INFO L87 Difference]: Start difference. First operand 77 states and 112 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:50:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:56,395 INFO L93 Difference]: Finished difference Result 203 states and 302 transitions. [2023-11-29 05:50:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:50:56,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2023-11-29 05:50:56,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:56,398 INFO L225 Difference]: With dead ends: 203 [2023-11-29 05:50:56,398 INFO L226 Difference]: Without dead ends: 133 [2023-11-29 05:50:56,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:50:56,400 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 119 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:56,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 468 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 05:50:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-29 05:50:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 91. [2023-11-29 05:50:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 80 states have (on average 1.4625) internal successors, (117), 82 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:50:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 135 transitions. [2023-11-29 05:50:56,421 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 135 transitions. Word has length 52 [2023-11-29 05:50:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:56,421 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 135 transitions. [2023-11-29 05:50:56,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:50:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 135 transitions. [2023-11-29 05:50:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 05:50:56,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:56,422 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 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] [2023-11-29 05:50:56,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:56,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:56,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1984062200, now seen corresponding path program 1 times [2023-11-29 05:50:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:56,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482017542] [2023-11-29 05:50:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:56,624 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 [2023-11-29 05:50:56,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:56,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:50:56,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:50:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:56,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:50:56,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:50:57,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:50:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:50:58,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:58,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482017542] [2023-11-29 05:50:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482017542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:50:58,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:50:58,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-29 05:50:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664960480] [2023-11-29 05:50:58,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:50:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:50:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:50:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:50:58,900 INFO L87 Difference]: Start difference. First operand 91 states and 135 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:51:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:03,140 INFO L93 Difference]: Finished difference Result 226 states and 340 transitions. [2023-11-29 05:51:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:51:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-11-29 05:51:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:03,142 INFO L225 Difference]: With dead ends: 226 [2023-11-29 05:51:03,143 INFO L226 Difference]: Without dead ends: 142 [2023-11-29 05:51:03,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:51:03,144 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 170 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:03,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 628 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 05:51:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-29 05:51:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2023-11-29 05:51:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 90 states have (on average 1.488888888888889) internal successors, (134), 92 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:51:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 152 transitions. [2023-11-29 05:51:03,158 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 152 transitions. Word has length 57 [2023-11-29 05:51:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:03,158 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 152 transitions. [2023-11-29 05:51:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:51:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 152 transitions. [2023-11-29 05:51:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 05:51:03,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:03,159 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 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] [2023-11-29 05:51:03,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 05:51:03,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:51:03,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:03,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:03,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1478669625, now seen corresponding path program 2 times [2023-11-29 05:51:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:03,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895090608] [2023-11-29 05:51:03,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:51:03,360 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 [2023-11-29 05:51:03,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:03,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:51:03,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:51:03,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:51:03,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:03,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:51:03,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-29 05:51:03,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:03,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895090608] [2023-11-29 05:51:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895090608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:03,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:03,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:51:03,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485852094] [2023-11-29 05:51:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:51:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:51:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:51:03,480 INFO L87 Difference]: Start difference. First operand 101 states and 152 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:51:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:03,535 INFO L93 Difference]: Finished difference Result 123 states and 182 transitions. [2023-11-29 05:51:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:51:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2023-11-29 05:51:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:03,537 INFO L225 Difference]: With dead ends: 123 [2023-11-29 05:51:03,537 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 05:51:03,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:51:03,538 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 13 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:03,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 116 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:51:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 05:51:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-29 05:51:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 90 states have (on average 1.4666666666666666) internal successors, (132), 92 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:51:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 150 transitions. [2023-11-29 05:51:03,547 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 150 transitions. Word has length 70 [2023-11-29 05:51:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:03,548 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 150 transitions. [2023-11-29 05:51:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:51:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 150 transitions. [2023-11-29 05:51:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 05:51:03,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:03,554 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 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] [2023-11-29 05:51:03,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:51:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:51:03,755 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:03,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1444529269, now seen corresponding path program 1 times [2023-11-29 05:51:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:03,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062478871] [2023-11-29 05:51:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:03,756 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 [2023-11-29 05:51:03,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:03,757 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:51:03,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:51:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:03,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:51:03,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 19 proven. 155 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:51:05,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 3 proven. 161 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:51:08,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062478871] [2023-11-29 05:51:08,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062478871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:08,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:08,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 05:51:08,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121702691] [2023-11-29 05:51:08,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:08,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:51:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:51:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:51:08,660 INFO L87 Difference]: Start difference. First operand 101 states and 150 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:51:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:20,896 INFO L93 Difference]: Finished difference Result 311 states and 468 transitions. [2023-11-29 05:51:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 05:51:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-29 05:51:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:20,900 INFO L225 Difference]: With dead ends: 311 [2023-11-29 05:51:20,900 INFO L226 Difference]: Without dead ends: 217 [2023-11-29 05:51:20,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 05:51:20,903 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 440 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:20,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 955 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 05:51:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-29 05:51:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 127. [2023-11-29 05:51:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 116 states have (on average 1.5086206896551724) internal successors, (175), 118 states have internal predecessors, (175), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:51:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2023-11-29 05:51:20,933 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 72 [2023-11-29 05:51:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:20,933 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2023-11-29 05:51:20,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:51:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2023-11-29 05:51:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 05:51:20,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:20,935 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 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] [2023-11-29 05:51:20,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:51:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:51:21,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:21,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash -535735428, now seen corresponding path program 1 times [2023-11-29 05:51:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:21,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954578925] [2023-11-29 05:51:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:21,136 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 [2023-11-29 05:51:21,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:21,138 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:51:21,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:51:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:21,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:51:21,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 19 proven. 273 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:51:23,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:51:27,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:27,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954578925] [2023-11-29 05:51:27,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954578925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:27,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:27,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-29 05:51:27,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669094384] [2023-11-29 05:51:27,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:27,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 05:51:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 05:51:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 05:51:27,511 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:51:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:38,868 INFO L93 Difference]: Finished difference Result 320 states and 482 transitions. [2023-11-29 05:51:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 05:51:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2023-11-29 05:51:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:38,871 INFO L225 Difference]: With dead ends: 320 [2023-11-29 05:51:38,872 INFO L226 Difference]: Without dead ends: 200 [2023-11-29 05:51:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 05:51:38,875 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 529 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1054 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-11-29 05:51:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-29 05:51:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 131. [2023-11-29 05:51:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 120 states have (on average 1.5166666666666666) internal successors, (182), 122 states have internal predecessors, (182), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:51:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 200 transitions. [2023-11-29 05:51:38,896 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 200 transitions. Word has length 83 [2023-11-29 05:51:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:38,897 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 200 transitions. [2023-11-29 05:51:38,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:51:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 200 transitions. [2023-11-29 05:51:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 05:51:38,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:38,898 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 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] [2023-11-29 05:51:38,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-29 05:51:39,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:51:39,099 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:39,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:39,099 INFO L85 PathProgramCache]: Analyzing trace with hash 837144459, now seen corresponding path program 2 times [2023-11-29 05:51:39,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:39,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223766552] [2023-11-29 05:51:39,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:51:39,100 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 [2023-11-29 05:51:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:39,101 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:51:39,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 05:51:39,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:51:39,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:39,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:51:39,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2023-11-29 05:51:39,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:39,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223766552] [2023-11-29 05:51:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223766552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:39,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:39,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:51:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123221437] [2023-11-29 05:51:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:39,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:51:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:51:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:51:39,316 INFO L87 Difference]: Start difference. First operand 131 states and 200 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:51:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:39,602 INFO L93 Difference]: Finished difference Result 150 states and 226 transitions. [2023-11-29 05:51:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:51:39,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2023-11-29 05:51:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:39,604 INFO L225 Difference]: With dead ends: 150 [2023-11-29 05:51:39,605 INFO L226 Difference]: Without dead ends: 145 [2023-11-29 05:51:39,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:51:39,605 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:39,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 146 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:51:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-29 05:51:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 135. [2023-11-29 05:51:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 124 states have (on average 1.5080645161290323) internal successors, (187), 126 states have internal predecessors, (187), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:51:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 205 transitions. [2023-11-29 05:51:39,617 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 205 transitions. Word has length 108 [2023-11-29 05:51:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:39,617 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 205 transitions. [2023-11-29 05:51:39,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:51:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 205 transitions. [2023-11-29 05:51:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 05:51:39,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:39,618 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 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] [2023-11-29 05:51:39,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 05:51:39,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:51:39,819 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:39,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2099323249, now seen corresponding path program 1 times [2023-11-29 05:51:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:39,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352094359] [2023-11-29 05:51:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:39,820 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 [2023-11-29 05:51:39,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:39,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:51:39,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:51:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:39,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:51:39,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 19 proven. 737 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:51:44,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 3 proven. 743 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:51:55,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:55,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352094359] [2023-11-29 05:51:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352094359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:55,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:55,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 05:51:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256636838] [2023-11-29 05:51:55,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:55,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 05:51:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 05:51:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 05:51:55,592 INFO L87 Difference]: Start difference. First operand 135 states and 205 transitions. Second operand has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:52:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:49,887 INFO L93 Difference]: Finished difference Result 517 states and 794 transitions. [2023-11-29 05:52:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-29 05:52:49,889 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2023-11-29 05:52:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:49,892 INFO L225 Difference]: With dead ends: 517 [2023-11-29 05:52:49,892 INFO L226 Difference]: Without dead ends: 389 [2023-11-29 05:52:49,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 05:52:49,896 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1405 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 5592 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 5640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:49,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 2837 Invalid, 5640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 5592 Invalid, 0 Unknown, 0 Unchecked, 32.8s Time] [2023-11-29 05:52:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-29 05:52:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 203. [2023-11-29 05:52:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 192 states have (on average 1.5625) internal successors, (300), 194 states have internal predecessors, (300), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:52:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 318 transitions. [2023-11-29 05:52:49,931 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 318 transitions. Word has length 110 [2023-11-29 05:52:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:49,931 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 318 transitions. [2023-11-29 05:52:49,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 05:52:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 318 transitions. [2023-11-29 05:52:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:52:49,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:49,933 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 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, 1] [2023-11-29 05:52:49,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:50,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:50,134 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:50,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1151289122, now seen corresponding path program 1 times [2023-11-29 05:52:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:50,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663473802] [2023-11-29 05:52:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:50,134 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 [2023-11-29 05:52:50,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:50,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:52:50,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:50,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:52:50,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-11-29 05:52:50,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:50,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:50,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663473802] [2023-11-29 05:52:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663473802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:50,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:50,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:52:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919738724] [2023-11-29 05:52:50,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:50,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:50,312 INFO L87 Difference]: Start difference. First operand 203 states and 318 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:52:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:50,466 INFO L93 Difference]: Finished difference Result 215 states and 331 transitions. [2023-11-29 05:52:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 115 [2023-11-29 05:52:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:50,468 INFO L225 Difference]: With dead ends: 215 [2023-11-29 05:52:50,468 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 05:52:50,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:50,469 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:50,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 159 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:52:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 05:52:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2023-11-29 05:52:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 196 states have (on average 1.5561224489795917) internal successors, (305), 198 states have internal predecessors, (305), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:52:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 323 transitions. [2023-11-29 05:52:50,499 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 323 transitions. Word has length 115 [2023-11-29 05:52:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:50,500 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 323 transitions. [2023-11-29 05:52:50,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:52:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 323 transitions. [2023-11-29 05:52:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:52:50,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:50,501 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 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, 1] [2023-11-29 05:52:50,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:50,702 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1208547424, now seen corresponding path program 1 times [2023-11-29 05:52:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918425466] [2023-11-29 05:52:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:50,703 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 [2023-11-29 05:52:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:50,704 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:52:50,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:50,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:52:50,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-11-29 05:52:50,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:50,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918425466] [2023-11-29 05:52:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918425466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:50,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:50,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:52:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974921530] [2023-11-29 05:52:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:50,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:52:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:52:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:52:50,966 INFO L87 Difference]: Start difference. First operand 207 states and 323 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:52:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:51,242 INFO L93 Difference]: Finished difference Result 213 states and 328 transitions. [2023-11-29 05:52:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:52:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 115 [2023-11-29 05:52:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:51,245 INFO L225 Difference]: With dead ends: 213 [2023-11-29 05:52:51,245 INFO L226 Difference]: Without dead ends: 196 [2023-11-29 05:52:51,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:52:51,246 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 2 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:51,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 278 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:52:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-29 05:52:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-29 05:52:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 185 states have (on average 1.572972972972973) internal successors, (291), 188 states have internal predecessors, (291), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 05:52:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 306 transitions. [2023-11-29 05:52:51,271 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 306 transitions. Word has length 115 [2023-11-29 05:52:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:51,271 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 306 transitions. [2023-11-29 05:52:51,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:52:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 306 transitions. [2023-11-29 05:52:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:52:51,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:51,273 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 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] [2023-11-29 05:52:51,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 05:52:51,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:51,473 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:51,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1912830095, now seen corresponding path program 1 times [2023-11-29 05:52:51,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:51,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172148204] [2023-11-29 05:52:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:51,474 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 [2023-11-29 05:52:51,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:51,475 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:52:51,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:51,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:52:51,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-11-29 05:52:51,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:51,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172148204] [2023-11-29 05:52:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172148204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:51,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:51,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:52:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546088654] [2023-11-29 05:52:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:51,680 INFO L87 Difference]: Start difference. First operand 196 states and 306 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:52:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:51,819 INFO L93 Difference]: Finished difference Result 220 states and 337 transitions. [2023-11-29 05:52:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:51,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 117 [2023-11-29 05:52:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:51,821 INFO L225 Difference]: With dead ends: 220 [2023-11-29 05:52:51,821 INFO L226 Difference]: Without dead ends: 196 [2023-11-29 05:52:51,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:52:51,822 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:51,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 166 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:52:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-29 05:52:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-29 05:52:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 185 states have (on average 1.5675675675675675) internal successors, (290), 188 states have internal predecessors, (290), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 05:52:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 305 transitions. [2023-11-29 05:52:51,840 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 305 transitions. Word has length 117 [2023-11-29 05:52:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:51,841 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 305 transitions. [2023-11-29 05:52:51,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 05:52:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 305 transitions. [2023-11-29 05:52:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:52:51,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:51,843 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 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] [2023-11-29 05:52:51,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-29 05:52:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:52,043 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:52,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1654664657, now seen corresponding path program 1 times [2023-11-29 05:52:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:52,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830884943] [2023-11-29 05:52:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:52,044 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 [2023-11-29 05:52:52,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:52,045 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:52:52,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:52,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:52:52,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-11-29 05:52:52,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-11-29 05:52:52,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830884943] [2023-11-29 05:52:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830884943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:52:52,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:52:52,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-29 05:52:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065805778] [2023-11-29 05:52:52,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:52,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:52:52,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:52:52,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:52:52,768 INFO L87 Difference]: Start difference. First operand 196 states and 305 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:52:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:53,038 INFO L93 Difference]: Finished difference Result 201 states and 309 transitions. [2023-11-29 05:52:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:52:53,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 117 [2023-11-29 05:52:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:53,041 INFO L225 Difference]: With dead ends: 201 [2023-11-29 05:52:53,041 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 05:52:53,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:52:53,042 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 17 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:53,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 226 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:52:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 05:52:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2023-11-29 05:52:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 1.5635359116022098) internal successors, (283), 184 states have internal predecessors, (283), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 05:52:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 298 transitions. [2023-11-29 05:52:53,069 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 298 transitions. Word has length 117 [2023-11-29 05:52:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:53,069 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 298 transitions. [2023-11-29 05:52:53,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:52:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 298 transitions. [2023-11-29 05:52:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:52:53,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:53,071 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 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] [2023-11-29 05:52:53,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:53,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:53,271 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:53,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 936931255, now seen corresponding path program 1 times [2023-11-29 05:52:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838886724] [2023-11-29 05:52:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:53,272 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 [2023-11-29 05:52:53,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:53,273 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:52:53,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:53,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:52:53,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-11-29 05:52:53,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-11-29 05:52:53,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838886724] [2023-11-29 05:52:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838886724] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:52:53,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:52:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 05:52:53,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20122186] [2023-11-29 05:52:53,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:52:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:52:53,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:52:53,963 INFO L87 Difference]: Start difference. First operand 192 states and 298 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:52:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:54,505 INFO L93 Difference]: Finished difference Result 218 states and 330 transitions. [2023-11-29 05:52:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:52:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2023-11-29 05:52:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:54,508 INFO L225 Difference]: With dead ends: 218 [2023-11-29 05:52:54,508 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 05:52:54,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:52:54,510 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:54,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 350 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:52:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 05:52:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-29 05:52:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 180 states have (on average 1.3111111111111111) internal successors, (236), 182 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 05:52:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2023-11-29 05:52:54,539 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 120 [2023-11-29 05:52:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:54,539 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2023-11-29 05:52:54,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:52:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2023-11-29 05:52:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 05:52:54,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:54,541 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 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] [2023-11-29 05:52:54,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:54,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:54,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:54,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1887381794, now seen corresponding path program 2 times [2023-11-29 05:52:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:54,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644246072] [2023-11-29 05:52:54,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:52:54,742 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 [2023-11-29 05:52:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:54,743 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 05:52:54,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 05:52:54,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:52:54,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:54,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:52:54,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-11-29 05:52:55,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:56,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644246072] [2023-11-29 05:52:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644246072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1375413622] [2023-11-29 05:52:56,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:52:56,212 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:52:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:52:56,214 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:52:56,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-11-29 05:52:56,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:52:56,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:56,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:52:56,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-11-29 05:52:56,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:57,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1375413622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:57,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:52:57,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 05:52:57,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736349231] [2023-11-29 05:52:57,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:52:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:52:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:52:57,358 INFO L87 Difference]: Start difference. First operand 190 states and 248 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:52:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:57,838 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2023-11-29 05:52:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:52:57,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2023-11-29 05:52:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:57,842 INFO L225 Difference]: With dead ends: 191 [2023-11-29 05:52:57,842 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 05:52:57,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:52:57,844 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:57,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 191 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:52:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 05:52:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 05:52:57,845 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) [2023-11-29 05:52:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 05:52:57,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2023-11-29 05:52:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 05:52:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 05:52:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 05:52:57,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 05:52:57,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-29 05:52:57,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 05:52:57,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-11-29 05:52:58,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 05:52:58,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:52:58,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 05:53:04,208 INFO L899 garLoopResultBuilder]: For program point L122(lines 71 124) no Hoare annotation was computed. [2023-11-29 05:53:04,208 INFO L899 garLoopResultBuilder]: For program point L81(lines 80 95) no Hoare annotation was computed. [2023-11-29 05:53:04,208 INFO L899 garLoopResultBuilder]: For program point L102(lines 100 115) no Hoare annotation was computed. [2023-11-29 05:53:04,208 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 94) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L895 garLoopResultBuilder]: At program point L90-1(lines 80 95) the Hoare annotation is: (let ((.cse0 (not (= currentRoundingMode roundNearestTiesToEven)))) (and (or (not (= |base2flt_#in~m| (_ bv0 32))) .cse0) (or .cse0 (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32)))))) [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 118) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point L116(lines 78 118) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 67 125) the Hoare annotation is: true [2023-11-29 05:53:04,209 INFO L895 garLoopResultBuilder]: At program point L100-2(lines 100 115) the Hoare annotation is: (or (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))) (or (not (bvsle (bvadd (_ bv4294967274 32) base2flt_~e) (_ bv4294967168 32))) .cse0))) (not (= currentRoundingMode roundNearestTiesToEven))) [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 67 125) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point L101(lines 100 115) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L895 garLoopResultBuilder]: At program point L283(line 283) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point L283-1(line 283) no Hoare annotation was computed. [2023-11-29 05:53:04,209 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 309) no Hoare annotation was computed. [2023-11-29 05:53:04,210 INFO L895 garLoopResultBuilder]: At program point L300-2(lines 300 309) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~tmp___0~0#1| (_ bv0 32)) (not (bvult |ULTIMATE.start_main2_~b~0#1| |ULTIMATE.start_main2_~zero~0#1|)) (= |ULTIMATE.start_main2_~tmp___1~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-29 05:53:04,210 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 207) no Hoare annotation was computed. [2023-11-29 05:53:04,210 INFO L899 garLoopResultBuilder]: For program point L201-2(lines 200 261) no Hoare annotation was computed. [2023-11-29 05:53:04,210 INFO L899 garLoopResultBuilder]: For program point L259(lines 200 261) no Hoare annotation was computed. [2023-11-29 05:53:04,210 INFO L895 garLoopResultBuilder]: At program point L284(line 284) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-29 05:53:04,210 INFO L899 garLoopResultBuilder]: For program point L284-1(line 284) no Hoare annotation was computed. [2023-11-29 05:53:04,210 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 05:53:04,210 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 295) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L286-2(lines 286 295) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 307) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L237(lines 237 254) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L303-2(lines 303 307) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L237-2(lines 237 254) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 326) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 251) no Hoare annotation was computed. [2023-11-29 05:53:04,211 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L238(lines 238 243) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 227) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 325) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L289(lines 289 293) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L289-2(lines 289 293) no Hoare annotation was computed. [2023-11-29 05:53:04,212 INFO L895 garLoopResultBuilder]: At program point L281(line 281) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2023-11-29 05:53:04,212 INFO L899 garLoopResultBuilder]: For program point L281-1(line 281) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L895 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point L299(lines 299 315) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point L299-1(lines 299 315) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 58 63) no Hoare annotation was computed. [2023-11-29 05:53:04,213 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 58 63) the Hoare annotation is: true [2023-11-29 05:53:04,214 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 58 63) no Hoare annotation was computed. [2023-11-29 05:53:04,214 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 60) no Hoare annotation was computed. [2023-11-29 05:53:04,216 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:04,218 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:53:04,231 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-29 05:53:04,233 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-29 05:53:04,233 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-29 05:53:04,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:53:04 BoogieIcfgContainer [2023-11-29 05:53:04,234 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:53:04,234 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:53:04,234 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:53:04,234 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:53:04,235 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:41:07" (3/4) ... [2023-11-29 05:53:04,237 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 05:53:04,239 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2023-11-29 05:53:04,240 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 05:53:04,245 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-29 05:53:04,246 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 05:53:04,246 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 05:53:04,246 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 05:53:04,329 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 05:53:04,330 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 05:53:04,330 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:53:04,331 INFO L158 Benchmark]: Toolchain (without parser) took 722219.00ms. Allocated memory was 86.0MB in the beginning and 251.7MB in the end (delta: 165.7MB). Free memory was 63.2MB in the beginning and 132.3MB in the end (delta: -69.0MB). Peak memory consumption was 97.3MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,332 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:53:04,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.04ms. Allocated memory is still 86.0MB. Free memory was 63.0MB in the beginning and 48.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.99ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 46.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,333 INFO L158 Benchmark]: Boogie Preprocessor took 61.02ms. Allocated memory is still 86.0MB. Free memory was 46.2MB in the beginning and 65.2MB in the end (delta: -18.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,333 INFO L158 Benchmark]: RCFGBuilder took 4677.80ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 47.2MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,334 INFO L158 Benchmark]: TraceAbstraction took 716992.73ms. Allocated memory was 86.0MB in the beginning and 251.7MB in the end (delta: 165.7MB). Free memory was 46.6MB in the beginning and 138.5MB in the end (delta: -92.0MB). Peak memory consumption was 139.9MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,334 INFO L158 Benchmark]: Witness Printer took 96.39ms. Allocated memory is still 251.7MB. Free memory was 138.5MB in the beginning and 132.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 05:53:04,336 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.04ms. Allocated memory is still 86.0MB. Free memory was 63.0MB in the beginning and 48.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.99ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 46.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.02ms. Allocated memory is still 86.0MB. Free memory was 46.2MB in the beginning and 65.2MB in the end (delta: -18.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * RCFGBuilder took 4677.80ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 47.2MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 716992.73ms. Allocated memory was 86.0MB in the beginning and 251.7MB in the end (delta: 165.7MB). Free memory was 46.6MB in the beginning and 138.5MB in the end (delta: -92.0MB). Peak memory consumption was 139.9MB. Max. memory is 16.1GB. * Witness Printer took 96.39ms. Allocated memory is still 251.7MB. Free memory was 138.5MB in the beginning and 132.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * 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: 48]: 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: 60]: 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, 55 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 716.9s, OverallIterations: 22, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 105.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 3049 SdHoareTripleChecker+Valid, 67.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3049 mSDsluCounter, 9081 SdHoareTripleChecker+Invalid, 64.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 136 IncrementalHoareTripleChecker+Unchecked, 7803 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10362 IncrementalHoareTripleChecker+Invalid, 10693 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 1278 mSDtfsCounter, 10362 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2641 GetRequests, 2296 SyntacticMatches, 1 SemanticMatches, 344 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 74.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=17, InterpolantAutomatonStates: 302, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 529 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 119 PreInvPairs, 329 NumberOfFragments, 92 HoareAnnotationTreeSize, 119 FomulaSimplifications, 97220 FormulaSimplificationTreeSizeReduction, 2.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 7179 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 466.5s SatisfiabilityAnalysisTime, 133.6s InterpolantComputationTime, 1696 NumberOfCodeBlocks, 1525 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2363 ConstructedInterpolants, 2 QuantifiedInterpolants, 7051 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2848 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 32 InterpolantComputations, 12 PerfectInterpolantSequences, 9046/11598 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: 100]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-29 05:53:04,548 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-11-29 05:53:04,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a65a5117-8e98-4496-a900-e94bfe9553d9/bin/uautomizer-verify-BQ2R08f2Ya/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 Writing output log to file Ultimate.log Result: TRUE