./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i --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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:06:39,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:06:39,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:06:39,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:06:39,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:06:39,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:06:39,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:06:39,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:06:39,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:06:39,700 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:06:39,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:06:39,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:06:39,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:06:39,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:06:39,703 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:06:39,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:06:39,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:06:39,704 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:06:39,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:06:39,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:06:39,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:06:39,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:06:39,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:06:39,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:06:39,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:06:39,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:06:39,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:06:39,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:06:39,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:06:39,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:06:39,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:06:39,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:06:39,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:06:39,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:06:39,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:06:39,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:06:39,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:06:39,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:06:39,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:06:39,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:06:39,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:06:39,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:06:39,713 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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 [2023-11-29 04:06:39,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:06:39,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:06:39,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:06:39,979 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:06:39,980 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:06:39,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-29 04:06:42,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:06:43,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:06:43,034 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-29 04:06:43,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data/e7dc3f932/f9baa89599a14af5b5faddfbbf05e37e/FLAG7203debaa [2023-11-29 04:06:43,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data/e7dc3f932/f9baa89599a14af5b5faddfbbf05e37e [2023-11-29 04:06:43,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:06:43,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:06:43,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:06:43,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:06:43,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:06:43,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec408d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43, skipping insertion in model container [2023-11-29 04:06:43,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:06:43,269 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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2023-11-29 04:06:43,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:06:43,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:06:43,381 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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2023-11-29 04:06:43,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:06:43,445 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:06:43,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43 WrapperNode [2023-11-29 04:06:43,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:06:43,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:06:43,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:06:43,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:06:43,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,517 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2023-11-29 04:06:43,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:06:43,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:06:43,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:06:43,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:06:43,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,560 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 04:06:43,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:06:43,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:06:43,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:06:43,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:06:43,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (1/1) ... [2023-11-29 04:06:43,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:06:43,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:43,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:06:43,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:06:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:06:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:06:43,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:06:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:06:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:06:43,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:06:43,777 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:06:43,780 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:06:44,229 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:06:44,319 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:06:44,320 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:06:44,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:06:44 BoogieIcfgContainer [2023-11-29 04:06:44,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:06:44,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:06:44,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:06:44,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:06:44,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:06:43" (1/3) ... [2023-11-29 04:06:44,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f75be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:06:44, skipping insertion in model container [2023-11-29 04:06:44,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:43" (2/3) ... [2023-11-29 04:06:44,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f75be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:06:44, skipping insertion in model container [2023-11-29 04:06:44,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:06:44" (3/3) ... [2023-11-29 04:06:44,330 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-29 04:06:44,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:06:44,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:06:44,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:06:44,400 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;@20086924, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:06:44,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:06:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 71 states have internal predecessors, (107), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 04:06:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 04:06:44,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:44,426 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:44,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:44,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 260326769, now seen corresponding path program 1 times [2023-11-29 04:06:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:44,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879236057] [2023-11-29 04:06:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879236057] [2023-11-29 04:06:44,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:06:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927975920] [2023-11-29 04:06:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:44,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:44,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:44,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:44,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:06:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:44,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:06:44,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-29 04:06:44,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:06:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927975920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:06:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740093483] [2023-11-29 04:06:44,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:44,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:06:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:45,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:06:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:06:45,018 INFO L87 Difference]: Start difference. First operand has 106 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 71 states have internal predecessors, (107), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 04:06:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:45,074 INFO L93 Difference]: Finished difference Result 209 states and 377 transitions. [2023-11-29 04:06:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:06:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 209 [2023-11-29 04:06:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:45,087 INFO L225 Difference]: With dead ends: 209 [2023-11-29 04:06:45,087 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 04:06:45,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 208 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 04:06:45,096 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:45,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:06:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 04:06:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-29 04:06:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 69 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 04:06:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 168 transitions. [2023-11-29 04:06:45,158 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 168 transitions. Word has length 209 [2023-11-29 04:06:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:45,158 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 168 transitions. [2023-11-29 04:06:45,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 04:06:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 168 transitions. [2023-11-29 04:06:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 04:06:45,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:45,165 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:45,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:06:45,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:45,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:45,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:45,370 INFO L85 PathProgramCache]: Analyzing trace with hash 464320031, now seen corresponding path program 1 times [2023-11-29 04:06:45,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:45,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887475991] [2023-11-29 04:06:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:45,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:45,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664718370] [2023-11-29 04:06:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:45,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:45,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:45,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:45,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:06:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:45,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:06:45,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 04:06:46,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:06:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887475991] [2023-11-29 04:06:46,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:06:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664718370] [2023-11-29 04:06:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664718370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:46,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:06:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384698447] [2023-11-29 04:06:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:06:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:06:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:06:46,101 INFO L87 Difference]: Start difference. First operand 104 states and 168 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:06:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:46,192 INFO L93 Difference]: Finished difference Result 310 states and 502 transitions. [2023-11-29 04:06:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:06:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 209 [2023-11-29 04:06:46,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:46,199 INFO L225 Difference]: With dead ends: 310 [2023-11-29 04:06:46,199 INFO L226 Difference]: Without dead ends: 207 [2023-11-29 04:06:46,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:06:46,202 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 91 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:46,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 485 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:06:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-29 04:06:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-11-29 04:06:46,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 136 states have (on average 1.4779411764705883) internal successors, (201), 136 states have internal predecessors, (201), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 04:06:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 333 transitions. [2023-11-29 04:06:46,252 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 333 transitions. Word has length 209 [2023-11-29 04:06:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:46,253 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 333 transitions. [2023-11-29 04:06:46,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:06:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 333 transitions. [2023-11-29 04:06:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 04:06:46,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:46,260 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:46,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:06:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:46,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:46,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1425928954, now seen corresponding path program 1 times [2023-11-29 04:06:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564153523] [2023-11-29 04:06:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:46,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:46,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271493461] [2023-11-29 04:06:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:46,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:46,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:46,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:46,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:06:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:46,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:06:46,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 04:06:46,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:06:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564153523] [2023-11-29 04:06:46,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:06:46,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271493461] [2023-11-29 04:06:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271493461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:46,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:46,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:06:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367405734] [2023-11-29 04:06:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:46,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:06:46,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:06:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:06:46,781 INFO L87 Difference]: Start difference. First operand 205 states and 333 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:06:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:46,950 INFO L93 Difference]: Finished difference Result 613 states and 997 transitions. [2023-11-29 04:06:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:06:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-29 04:06:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:46,956 INFO L225 Difference]: With dead ends: 613 [2023-11-29 04:06:46,956 INFO L226 Difference]: Without dead ends: 409 [2023-11-29 04:06:46,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 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 04:06:46,959 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 159 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:46,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 413 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:06:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-29 04:06:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 231. [2023-11-29 04:06:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 162 states have (on average 1.5123456790123457) internal successors, (245), 162 states have internal predecessors, (245), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 04:06:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 377 transitions. [2023-11-29 04:06:47,020 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 377 transitions. Word has length 210 [2023-11-29 04:06:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 377 transitions. [2023-11-29 04:06:47,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:06:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 377 transitions. [2023-11-29 04:06:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 04:06:47,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:47,026 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:47,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:06:47,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:47,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:47,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash 745870584, now seen corresponding path program 1 times [2023-11-29 04:06:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615568576] [2023-11-29 04:06:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:47,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:47,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122943793] [2023-11-29 04:06:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:47,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:06:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:47,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 04:06:47,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1563 proven. 243 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-29 04:06:54,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:16,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:16,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615568576] [2023-11-29 04:07:16,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122943793] [2023-11-29 04:07:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122943793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:16,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:07:16,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-11-29 04:07:16,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624869221] [2023-11-29 04:07:16,796 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:16,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:07:16,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:07:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=887, Unknown=6, NotChecked=0, Total=1122 [2023-11-29 04:07:16,800 INFO L87 Difference]: Start difference. First operand 231 states and 377 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 8 states have call successors, (33), 8 states have call predecessors, (33), 14 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2023-11-29 04:07:19,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 04:07:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:07:19,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=229, Invalid=887, Unknown=6, NotChecked=0, Total=1122 [2023-11-29 04:07:19,660 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:19,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:07:19,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:07:19,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:19,862 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2023-11-29 04:07:19,865 INFO L158 Benchmark]: Toolchain (without parser) took 36798.97ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 117.5MB in the beginning and 132.7MB in the end (delta: -15.2MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2023-11-29 04:07:19,865 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 157.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:07:19,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.31ms. Allocated memory is still 157.3MB. Free memory was 117.5MB in the beginning and 100.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:07:19,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.08ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 95.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 04:07:19,866 INFO L158 Benchmark]: Boogie Preprocessor took 84.84ms. Allocated memory is still 157.3MB. Free memory was 95.5MB in the beginning and 87.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 04:07:19,866 INFO L158 Benchmark]: RCFGBuilder took 717.16ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 87.1MB in the beginning and 174.5MB in the end (delta: -87.4MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2023-11-29 04:07:19,867 INFO L158 Benchmark]: TraceAbstraction took 35540.36ms. Allocated memory is still 207.6MB. Free memory was 173.5MB in the beginning and 132.7MB in the end (delta: 40.8MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2023-11-29 04:07:19,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 157.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.31ms. Allocated memory is still 157.3MB. Free memory was 117.5MB in the beginning and 100.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.08ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 95.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.84ms. Allocated memory is still 157.3MB. Free memory was 95.5MB in the beginning and 87.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 717.16ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 87.1MB in the beginning and 174.5MB in the end (delta: -87.4MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. * TraceAbstraction took 35540.36ms. Allocated memory is still 207.6MB. Free memory was 173.5MB in the beginning and 132.7MB in the end (delta: 40.8MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:07:21,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:07:21,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 04:07:21,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:07:21,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:07:21,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:07:21,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:07:21,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:07:21,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:07:21,761 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:07:21,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:07:21,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:07:21,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:07:21,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:07:21,765 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:07:21,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:07:21,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:07:21,767 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:07:21,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:07:21,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:07:21,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:07:21,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:07:21,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:07:21,771 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:07:21,771 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:07:21,772 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:07:21,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:07:21,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:07:21,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:07:21,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:07:21,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:07:21,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:07:21,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:07:21,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:07:21,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:07:21,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:07:21,776 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:07:21,776 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:07:21,777 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:07:21,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:07:21,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:07:21,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:07:21,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:07:21,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:07:21,778 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:07:21,779 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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 [2023-11-29 04:07:22,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:07:22,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:07:22,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:07:22,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:07:22,107 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:07:22,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-29 04:07:24,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:07:25,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:07:25,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-29 04:07:25,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data/65750b069/6eb21ce581c7469392ffa0c2ea749b4b/FLAGec316b4b5 [2023-11-29 04:07:25,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/data/65750b069/6eb21ce581c7469392ffa0c2ea749b4b [2023-11-29 04:07:25,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:07:25,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:07:25,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:07:25,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:07:25,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:07:25,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c1fecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25, skipping insertion in model container [2023-11-29 04:07:25,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:07:25,469 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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2023-11-29 04:07:25,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:07:25,571 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:07:25,583 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_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2023-11-29 04:07:25,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:07:25,657 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:07:25,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25 WrapperNode [2023-11-29 04:07:25,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:07:25,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:07:25,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:07:25,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:07:25,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,723 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 211 [2023-11-29 04:07:25,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:07:25,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:07:25,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:07:25,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:07:25,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,771 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 04:07:25,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:07:25,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:07:25,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:07:25,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:07:25,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (1/1) ... [2023-11-29 04:07:25,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:07:25,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:25,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:07:25,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:07:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:07:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:07:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:07:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:07:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:07:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:07:26,008 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:07:26,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:07:53,008 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:07:53,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:07:53,067 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:07:53,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:07:53 BoogieIcfgContainer [2023-11-29 04:07:53,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:07:53,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:07:53,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:07:53,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:07:53,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:07:25" (1/3) ... [2023-11-29 04:07:53,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d655613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:07:53, skipping insertion in model container [2023-11-29 04:07:53,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:25" (2/3) ... [2023-11-29 04:07:53,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d655613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:07:53, skipping insertion in model container [2023-11-29 04:07:53,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:07:53" (3/3) ... [2023-11-29 04:07:53,085 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-1.i [2023-11-29 04:07:53,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:07:53,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:07:53,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:07:53,149 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;@6b0023a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:07:53,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:07:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 56 states have internal predecessors, (79), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 04:07:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 04:07:53,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:53,169 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:53,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:53,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash 698322485, now seen corresponding path program 1 times [2023-11-29 04:07:53,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:07:53,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189774979] [2023-11-29 04:07:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:53,189 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 04:07:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:07:53,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:07:53,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:07:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:55,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:07:55,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 892 proven. 0 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2023-11-29 04:07:55,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:55,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:07:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189774979] [2023-11-29 04:07:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189774979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:55,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:55,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:07:55,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117223480] [2023-11-29 04:07:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:55,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:07:55,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:07:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:07:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:07:55,729 INFO L87 Difference]: Start difference. First operand has 91 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 56 states have internal predecessors, (79), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 04:08:02,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:08:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:08:02,475 INFO L93 Difference]: Finished difference Result 179 states and 321 transitions. [2023-11-29 04:08:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:08:03,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 207 [2023-11-29 04:08:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:08:03,194 INFO L225 Difference]: With dead ends: 179 [2023-11-29 04:08:03,194 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 04:08:03,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 206 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 04:08:03,202 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:08:03,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 04:08:03,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 04:08:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-29 04:08:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 04:08:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 140 transitions. [2023-11-29 04:08:03,265 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 140 transitions. Word has length 207 [2023-11-29 04:08:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:08:03,265 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 140 transitions. [2023-11-29 04:08:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 04:08:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 140 transitions. [2023-11-29 04:08:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 04:08:03,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:08:03,272 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:03,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:03,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:03,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:08:03,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1744343651, now seen corresponding path program 1 times [2023-11-29 04:08:03,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:08:03,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149792840] [2023-11-29 04:08:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:03,476 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 04:08:03,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:08:03,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:03,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:05,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:08:05,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 04:08:12,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:08:12,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:08:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149792840] [2023-11-29 04:08:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149792840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:08:12,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:08:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:08:12,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343828929] [2023-11-29 04:08:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:08:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:08:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:08:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:08:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:08:12,359 INFO L87 Difference]: Start difference. First operand 89 states and 140 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:08:19,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:08:23,309 WARN L539 Checker$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 04:08:27,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:08:31,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:08:35,363 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 04:08:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:08:36,148 INFO L93 Difference]: Finished difference Result 265 states and 418 transitions. [2023-11-29 04:08:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:08:36,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 207 [2023-11-29 04:08:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:08:36,154 INFO L225 Difference]: With dead ends: 265 [2023-11-29 04:08:36,155 INFO L226 Difference]: Without dead ends: 177 [2023-11-29 04:08:36,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:08:36,158 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 51 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:08:36,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 402 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 23.6s Time] [2023-11-29 04:08:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-29 04:08:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-11-29 04:08:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 04:08:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 277 transitions. [2023-11-29 04:08:36,204 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 277 transitions. Word has length 207 [2023-11-29 04:08:36,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:08:36,206 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 277 transitions. [2023-11-29 04:08:36,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:08:36,206 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 277 transitions. [2023-11-29 04:08:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 04:08:36,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:08:36,211 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:36,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:36,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:08:36,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1868955800, now seen corresponding path program 1 times [2023-11-29 04:08:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:08:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862049066] [2023-11-29 04:08:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:36,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:08:36,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:08:36,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:36,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:08:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:38,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:08:38,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1265 proven. 108 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2023-11-29 04:08:47,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:08:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 04:08:48,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:08:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862049066] [2023-11-29 04:08:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862049066] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:08:48,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:08:48,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 04:08:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691421069] [2023-11-29 04:08:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:08:48,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:08:48,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:08:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:08:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:08:48,929 INFO L87 Difference]: Start difference. First operand 175 states and 277 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:08:55,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:04,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:08,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:15,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:19,962 WARN L539 Checker$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 04:09:23,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:09:24,781 INFO L93 Difference]: Finished difference Result 431 states and 674 transitions. [2023-11-29 04:09:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:09:24,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-11-29 04:09:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:09:24,787 INFO L225 Difference]: With dead ends: 431 [2023-11-29 04:09:24,788 INFO L226 Difference]: Without dead ends: 257 [2023-11-29 04:09:24,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:09:24,791 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 69 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:09:24,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 380 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 6 Unknown, 0 Unchecked, 35.6s Time] [2023-11-29 04:09:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-29 04:09:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2023-11-29 04:09:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 152 states have (on average 1.3223684210526316) internal successors, (201), 154 states have internal predecessors, (201), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-29 04:09:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 393 transitions. [2023-11-29 04:09:24,854 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 393 transitions. Word has length 208 [2023-11-29 04:09:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:09:24,856 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 393 transitions. [2023-11-29 04:09:24,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:09:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 393 transitions. [2023-11-29 04:09:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 04:09:24,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:09:24,860 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:09:24,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:09:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:09:25,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:09:25,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash 93948438, now seen corresponding path program 1 times [2023-11-29 04:09:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901118646] [2023-11-29 04:09:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:25,063 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 04:09:25,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:25,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:09:25,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:09:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:27,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:09:27,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1438 proven. 93 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-11-29 04:09:40,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:58,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901118646] [2023-11-29 04:09:58,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901118646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:09:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [229409951] [2023-11-29 04:09:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:58,378 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:09:58,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:09:58,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:09:58,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-29 04:10:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:03,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:10:03,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 978 proven. 63 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2023-11-29 04:10:17,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:40,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [229409951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:40,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:10:40,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 16 [2023-11-29 04:10:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458533785] [2023-11-29 04:10:40,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:40,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:10:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:10:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:10:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=341, Unknown=7, NotChecked=0, Total=506 [2023-11-29 04:10:40,709 INFO L87 Difference]: Start difference. First operand 253 states and 393 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 5 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2023-11-29 04:11:12,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:16,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:20,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:24,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:28,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:32,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:36,523 WARN L539 Checker$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 [0] [2023-11-29 04:11:40,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:44,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:48,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:52,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:11:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:52,686 INFO L93 Difference]: Finished difference Result 573 states and 841 transitions. [2023-11-29 04:11:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:11:53,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 5 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) Word has length 208 [2023-11-29 04:11:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:53,476 INFO L225 Difference]: With dead ends: 573 [2023-11-29 04:11:53,476 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 04:11:53,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=291, Invalid=632, Unknown=7, NotChecked=0, Total=930 [2023-11-29 04:11:53,479 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 174 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 37 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:53,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 348 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 491 Invalid, 11 Unknown, 0 Unchecked, 67.7s Time] [2023-11-29 04:11:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 04:11:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 301. [2023-11-29 04:11:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 188 states have (on average 1.25) internal successors, (235), 190 states have internal predecessors, (235), 96 states have call successors, (96), 16 states have call predecessors, (96), 16 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-29 04:11:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 427 transitions. [2023-11-29 04:11:53,514 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 427 transitions. Word has length 208 [2023-11-29 04:11:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:53,515 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 427 transitions. [2023-11-29 04:11:53,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 5 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2023-11-29 04:11:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 427 transitions. [2023-11-29 04:11:53,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 04:11:53,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:53,518 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:53,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:11:53,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-11-29 04:11:53,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:11:53,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:53,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash 598822729, now seen corresponding path program 1 times [2023-11-29 04:11:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:11:53,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695194045] [2023-11-29 04:11:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:53,922 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 04:11:53,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:11:53,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:11:53,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:11:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:56,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:11:56,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1149 proven. 114 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2023-11-29 04:12:07,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 04:12:15,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695194045] [2023-11-29 04:12:15,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695194045] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:12:15,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:12:15,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-29 04:12:15,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231418207] [2023-11-29 04:12:15,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:15,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:12:15,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:12:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:12:15,263 INFO L87 Difference]: Start difference. First operand 301 states and 427 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:12:50,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:54,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:58,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:05,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:09,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:13,789 WARN L539 Checker$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 04:13:17,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:25,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:29,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:33,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:37,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:40,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:40,188 INFO L93 Difference]: Finished difference Result 741 states and 1066 transitions. [2023-11-29 04:13:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:13:40,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-11-29 04:13:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:13:40,199 INFO L225 Difference]: With dead ends: 741 [2023-11-29 04:13:40,199 INFO L226 Difference]: Without dead ends: 441 [2023-11-29 04:13:40,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:13:40,202 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 115 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 27 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:13:40,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 308 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 234 Invalid, 11 Unknown, 0 Unchecked, 80.8s Time] [2023-11-29 04:13:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-29 04:13:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 363. [2023-11-29 04:13:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 226 states have (on average 1.2433628318584071) internal successors, (281), 230 states have internal predecessors, (281), 118 states have call successors, (118), 18 states have call predecessors, (118), 18 states have return successors, (118), 114 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-29 04:13:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 517 transitions. [2023-11-29 04:13:40,278 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 517 transitions. Word has length 208 [2023-11-29 04:13:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:13:40,279 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 517 transitions. [2023-11-29 04:13:40,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:13:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 517 transitions. [2023-11-29 04:13:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 04:13:40,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:13:40,281 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:40,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:13:40,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:13:40,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:13:40,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 600669771, now seen corresponding path program 1 times [2023-11-29 04:13:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:13:40,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510352686] [2023-11-29 04:13:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:40,484 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 04:13:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:13:40,484 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:13:40,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:13:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:42,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:13:42,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 04:13:42,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:13:42,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:13:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510352686] [2023-11-29 04:13:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510352686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624456866] [2023-11-29 04:13:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:42,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:13:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:13:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:13:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:13:42,791 INFO L87 Difference]: Start difference. First operand 363 states and 517 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:13:50,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:13:54,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:14:01,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:14:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:02,761 INFO L93 Difference]: Finished difference Result 877 states and 1245 transitions. [2023-11-29 04:14:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:14:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-11-29 04:14:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:02,774 INFO L225 Difference]: With dead ends: 877 [2023-11-29 04:14:02,774 INFO L226 Difference]: Without dead ends: 515 [2023-11-29 04:14:02,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:14:02,777 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 130 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:02,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 379 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2023-11-29 04:14:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-29 04:14:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 471. [2023-11-29 04:14:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 280 states have (on average 1.1892857142857143) internal successors, (333), 284 states have internal predecessors, (333), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 158 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-29 04:14:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 657 transitions. [2023-11-29 04:14:02,859 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 657 transitions. Word has length 208 [2023-11-29 04:14:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:02,859 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 657 transitions. [2023-11-29 04:14:02,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 04:14:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 657 transitions. [2023-11-29 04:14:02,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 04:14:02,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:02,862 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:02,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:14:03,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:14:03,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:03,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1176184633, now seen corresponding path program 1 times [2023-11-29 04:14:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:03,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616103968] [2023-11-29 04:14:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:03,070 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 04:14:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:03,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:14:03,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/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 04:14:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:05,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:14:05,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1576 proven. 180 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-11-29 04:14:58,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:59,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:59,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616103968] [2023-11-29 04:15:59,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616103968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:59,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1862383180] [2023-11-29 04:15:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:59,888 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:59,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:15:59,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:15:59,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe5e8f12-0d35-41d3-b3d5-24d19739a06d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-29 04:16:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:04,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:16:04,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1448 proven. 141 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-11-29 04:16:54,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1862383180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:21,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:17:21,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 38 [2023-11-29 04:17:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680617032] [2023-11-29 04:17:21,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:21,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 04:17:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:17:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 04:17:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1965, Unknown=1, NotChecked=0, Total=2256 [2023-11-29 04:17:21,810 INFO L87 Difference]: Start difference. First operand 471 states and 657 transitions. Second operand has 39 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 38 states have internal predecessors, (136), 10 states have call successors, (66), 10 states have call predecessors, (66), 18 states have return successors, (66), 10 states have call predecessors, (66), 10 states have call successors, (66) [2023-11-29 04:18:15,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:18,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:21,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:24,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:33,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:38,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:42,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:45,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:52,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:18:56,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:00,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:04,540 WARN L539 Checker$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 [0] [2023-11-29 04:19:08,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:12,558 WARN L539 Checker$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 [0] [2023-11-29 04:19:16,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:20,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:24,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:28,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:32,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:36,649 WARN L539 Checker$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 [0] [2023-11-29 04:19:40,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:44,696 WARN L539 Checker$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 [0] [2023-11-29 04:19:48,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:52,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:19:56,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:00,753 WARN L539 Checker$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 [0] [2023-11-29 04:20:04,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:08,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:12,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:16,845 WARN L539 Checker$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 [0] [2023-11-29 04:20:23,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:27,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:31,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:35,562 WARN L539 Checker$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 [0] [2023-11-29 04:20:39,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:43,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:47,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:51,609 WARN L539 Checker$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 [0] [2023-11-29 04:20:55,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:20:59,635 WARN L539 Checker$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 [0] [2023-11-29 04:21:03,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:21:07,648 WARN L539 Checker$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 [0] [2023-11-29 04:21:11,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:21:15,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:21:19,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:21:23,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:21:27,942 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 [0]