./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --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 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:02:49,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:02:49,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:02:49,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:02:49,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:02:49,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:02:49,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:02:49,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:02:49,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:02:49,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:02:49,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:02:49,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:02:49,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:02:49,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:02:49,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:02:49,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:02:49,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:02:49,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:02:49,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:02:49,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:02:49,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:02:49,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:02:49,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:02:49,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:02:49,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:02:49,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:02:49,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:02:49,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:02:49,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:02:49,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:02:49,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:02:49,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:02:49,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:02:49,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:02:49,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:02:49,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:02:49,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:02:49,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:02:49,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:02:49,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:02:49,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:02:49,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:02:49,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:02:49,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:02:49,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:02:49,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:02:49,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:02:49,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:02:49,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:02:49,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:02:49,435 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:02:49,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:02:49,436 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:02:49,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:02:49,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:02:49,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:02:49,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:02:49,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:02:49,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:02:49,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:02:49,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:02:49,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:02:49,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:02:49,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:02:49,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:02:49,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:02:49,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:02:49,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:02:49,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:02:49,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:02:49,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:02:49,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:02:49,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:02:49,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:02:49,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:02:49,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:02:49,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2021-12-06 23:02:49,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:02:49,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:02:49,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:02:49,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:02:49,680 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:02:49,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-12-06 23:02:49,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/7e9fcee3d/686a8d3746b5497ebcfdea7b2f3b4118/FLAG799f9587d [2021-12-06 23:02:50,111 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:02:50,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-12-06 23:02:50,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/7e9fcee3d/686a8d3746b5497ebcfdea7b2f3b4118/FLAG799f9587d [2021-12-06 23:02:50,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/7e9fcee3d/686a8d3746b5497ebcfdea7b2f3b4118 [2021-12-06 23:02:50,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:02:50,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:02:50,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:02:50,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:02:50,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:02:50,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714bd190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50, skipping insertion in model container [2021-12-06 23:02:50,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:02:50,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:02:50,247 WARN L230 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_e8f96d11-9285-4db8-9f29-9161b628b4cb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-12-06 23:02:50,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:02:50,268 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:02:50,277 WARN L230 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_e8f96d11-9285-4db8-9f29-9161b628b4cb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-12-06 23:02:50,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:02:50,291 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:02:50,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50 WrapperNode [2021-12-06 23:02:50,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:02:50,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:02:50,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:02:50,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:02:50,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,321 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-12-06 23:02:50,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:02:50,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:02:50,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:02:50,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:02:50,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:02:50,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:02:50,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:02:50,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:02:50,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (1/1) ... [2021-12-06 23:02:50,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:02:50,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:02:50,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:02:50,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:02:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:02:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:02:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:02:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:02:50,450 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:02:50,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:02:50,536 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:02:50,541 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:02:50,541 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:02:50,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:02:50 BoogieIcfgContainer [2021-12-06 23:02:50,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:02:50,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:02:50,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:02:50,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:02:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:02:50" (1/3) ... [2021-12-06 23:02:50,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e285a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:02:50, skipping insertion in model container [2021-12-06 23:02:50,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:50" (2/3) ... [2021-12-06 23:02:50,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e285a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:02:50, skipping insertion in model container [2021-12-06 23:02:50,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:02:50" (3/3) ... [2021-12-06 23:02:50,551 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-12-06 23:02:50,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:02:50,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:02:50,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:02:50,599 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:02:50,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:02:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:02:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:02:50,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:50,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:50,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2021-12-06 23:02:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:50,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217703908] [2021-12-06 23:02:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:50,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:02:50,703 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:02:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:02:50,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:02:50,731 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:02:50,732 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:02:50,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:02:50,737 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-06 23:02:50,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:02:50,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:02:50 BoogieIcfgContainer [2021-12-06 23:02:50,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:02:50,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:02:50,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:02:50,757 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:02:50,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:02:50" (3/4) ... [2021-12-06 23:02:50,760 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:02:50,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:02:50,761 INFO L158 Benchmark]: Toolchain (without parser) took 630.75ms. Allocated memory is still 107.0MB. Free memory was 65.0MB in the beginning and 64.0MB in the end (delta: 991.0kB). Peak memory consumption was 752.3kB. Max. memory is 16.1GB. [2021-12-06 23:02:50,761 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:02:50,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.25ms. Allocated memory is still 107.0MB. Free memory was 64.8MB in the beginning and 54.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:02:50,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.98ms. Allocated memory is still 107.0MB. Free memory was 54.3MB in the beginning and 85.9MB in the end (delta: -31.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 23:02:50,763 INFO L158 Benchmark]: Boogie Preprocessor took 15.56ms. Allocated memory is still 107.0MB. Free memory was 85.9MB in the beginning and 85.0MB in the end (delta: 955.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:02:50,763 INFO L158 Benchmark]: RCFGBuilder took 205.77ms. Allocated memory is still 107.0MB. Free memory was 85.0MB in the beginning and 78.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 23:02:50,764 INFO L158 Benchmark]: TraceAbstraction took 211.65ms. Allocated memory is still 107.0MB. Free memory was 78.2MB in the beginning and 64.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 23:02:50,764 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 107.0MB. Free memory was 64.4MB in the beginning and 64.0MB in the end (delta: 439.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:02:50,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.25ms. Allocated memory is still 107.0MB. Free memory was 64.8MB in the beginning and 54.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.98ms. Allocated memory is still 107.0MB. Free memory was 54.3MB in the beginning and 85.9MB in the end (delta: -31.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.56ms. Allocated memory is still 107.0MB. Free memory was 85.9MB in the beginning and 85.0MB in the end (delta: 955.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.77ms. Allocated memory is still 107.0MB. Free memory was 85.0MB in the beginning and 78.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 211.65ms. Allocated memory is still 107.0MB. Free memory was 78.2MB in the beginning and 64.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 107.0MB. Free memory was 64.4MB in the beginning and 64.0MB in the end (delta: 439.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 55, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, r; [L51] d = 1. VAL [_EPS=1/1000000, d=1] [L51] COND TRUE d <= 20. [L53] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [\old(Input)=1, _EPS=1/1000000, Input=1] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [\old(Input)=1, _EPS=1/1000000, Input=1, xn=1] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [\old(Input)=1, _EPS=1/1000000, cond=0, i=0, Input=1, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) VAL [\old(Input)=1, _EPS=1/1000000, cond=0, i=0, Input=1, xn=1, xn=1] [L44] return 1.0 / xnp1; VAL [\old(Input)=1, _EPS=1/1000000, cond=0, i=0, Input=1, xn=1, xn=1] [L53] RET, EXPR SqrtR(d) [L53] r = SqrtR(d) [L55] CALL __VERIFIER_assert(r >= 1.0 && r <= 5.0) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 23:02:50,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --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 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:02:52,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:02:52,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:02:52,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:02:52,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:02:52,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:02:52,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:02:52,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:02:52,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:02:52,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:02:52,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:02:52,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:02:52,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:02:52,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:02:52,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:02:52,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:02:52,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:02:52,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:02:52,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:02:52,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:02:52,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:02:52,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:02:52,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:02:52,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:02:52,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:02:52,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:02:52,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:02:52,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:02:52,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:02:52,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:02:52,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:02:52,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:02:52,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:02:52,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:02:52,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:02:52,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:02:52,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:02:52,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:02:52,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:02:52,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:02:52,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:02:52,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 23:02:52,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:02:52,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:02:52,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:02:52,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:02:52,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:02:52,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:02:52,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:02:52,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:02:52,419 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:02:52,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:02:52,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:02:52,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:02:52,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:02:52,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:02:52,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:02:52,421 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:02:52,422 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2021-12-06 23:02:52,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:02:52,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:02:52,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:02:52,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:02:52,679 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:02:52,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-12-06 23:02:52,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/ababf5cc2/9676ea69cdf644f4b5155454acd7b774/FLAG0b6d34bf5 [2021-12-06 23:02:53,119 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:02:53,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-12-06 23:02:53,124 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/ababf5cc2/9676ea69cdf644f4b5155454acd7b774/FLAG0b6d34bf5 [2021-12-06 23:02:53,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/data/ababf5cc2/9676ea69cdf644f4b5155454acd7b774 [2021-12-06 23:02:53,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:02:53,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:02:53,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:02:53,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:02:53,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:02:53,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb2470e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53, skipping insertion in model container [2021-12-06 23:02:53,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:02:53,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:02:53,263 WARN L230 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_e8f96d11-9285-4db8-9f29-9161b628b4cb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-12-06 23:02:53,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:02:53,286 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:02:53,301 WARN L230 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_e8f96d11-9285-4db8-9f29-9161b628b4cb/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2021-12-06 23:02:53,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:02:53,326 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:02:53,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53 WrapperNode [2021-12-06 23:02:53,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:02:53,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:02:53,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:02:53,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:02:53,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,355 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2021-12-06 23:02:53,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:02:53,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:02:53,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:02:53,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:02:53,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:02:53,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:02:53,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:02:53,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:02:53,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (1/1) ... [2021-12-06 23:02:53,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:02:53,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:02:53,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:02:53,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:02:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:02:53,513 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:02:53,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:03:02,458 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:03:02,465 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:03:02,465 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:03:02,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:03:02 BoogieIcfgContainer [2021-12-06 23:03:02,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:03:02,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:03:02,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:03:02,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:03:02,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:02:53" (1/3) ... [2021-12-06 23:03:02,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d1799c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:03:02, skipping insertion in model container [2021-12-06 23:03:02,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:53" (2/3) ... [2021-12-06 23:03:02,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d1799c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:03:02, skipping insertion in model container [2021-12-06 23:03:02,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:03:02" (3/3) ... [2021-12-06 23:03:02,475 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-12-06 23:03:02,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:03:02,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:03:02,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:03:02,526 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:03:02,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:03:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:03:02,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:02,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:02,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2021-12-06 23:03:02,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:03:02,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105542781] [2021-12-06 23:03:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:02,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:03:02,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:03:02,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:03:02,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:03:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:03,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:03:03,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:03:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:04,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:03:04,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:03:04,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105542781] [2021-12-06 23:03:04,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105542781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:03:04,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:03:04,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:03:04,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584262474] [2021-12-06 23:03:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:04,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:03:04,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:03:04,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:03:04,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:04,560 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:07,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:09,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:12,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:15,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:03:15,747 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2021-12-06 23:03:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:03:15,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 23:03:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:03:15,757 INFO L225 Difference]: With dead ends: 40 [2021-12-06 23:03:15,757 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 23:03:15,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:15,762 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:03:15,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-12-06 23:03:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 23:03:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-06 23:03:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-12-06 23:03:15,788 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2021-12-06 23:03:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:15,788 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-06 23:03:15,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-12-06 23:03:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:03:15,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:15,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:15,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:03:15,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:03:15,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:15,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 68780179, now seen corresponding path program 1 times [2021-12-06 23:03:15,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:03:15,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295989540] [2021-12-06 23:03:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:15,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:03:15,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:03:15,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:03:15,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:03:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:17,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:03:17,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:03:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:18,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:03:18,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:03:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295989540] [2021-12-06 23:03:18,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295989540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:03:18,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:03:18,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:03:18,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075743865] [2021-12-06 23:03:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:03:18,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:03:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:03:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:03:18,186 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:20,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:23,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:25,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:28,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:29,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:32,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:34,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:03:34,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:03:34,951 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-12-06 23:03:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:03:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 23:03:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:03:35,120 INFO L225 Difference]: With dead ends: 28 [2021-12-06 23:03:35,120 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 23:03:35,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:35,122 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:03:35,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 16.6s Time] [2021-12-06 23:03:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 23:03:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-06 23:03:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-06 23:03:35,126 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-12-06 23:03:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:35,126 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-06 23:03:35,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:03:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-06 23:03:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 23:03:35,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:35,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:35,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:03:35,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:03:35,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1301780435, now seen corresponding path program 1 times [2021-12-06 23:03:35,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:03:35,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685755775] [2021-12-06 23:03:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:35,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:03:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:03:35,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:03:35,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:03:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:38,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:03:38,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:03:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:41,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:03:53,597 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-12-06 23:03:55,783 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-12-06 23:04:09,169 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:14,814 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:17,304 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-12-06 23:04:19,803 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-12-06 23:04:25,539 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 26 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:31,384 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 28 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:36,635 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:41,834 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:44,149 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-12-06 23:04:46,498 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-12-06 23:04:51,731 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 25 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:56,898 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 27 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:04:59,216 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-12-06 23:05:01,545 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-12-06 23:05:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 23:05:01,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:05:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685755775] [2021-12-06 23:05:01,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685755775] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:01,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:01,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 23:05:01,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704929073] [2021-12-06 23:05:01,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:01,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:05:01,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:05:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:05:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=83, Unknown=8, NotChecked=84, Total=210 [2021-12-06 23:05:01,586 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:03,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:06,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:08,900 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_main_~d~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2021-12-06 23:05:11,242 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_main_~d~0#1|) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2021-12-06 23:05:13,599 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-12-06 23:05:15,942 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-12-06 23:05:18,413 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-12-06 23:05:20,944 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_SqrtR_~Input#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-12-06 23:05:32,377 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse1) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-12-06 23:05:35,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:39,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:41,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:44,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:47,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:48,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:05:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:48,418 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-12-06 23:05:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:05:48,421 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 23:05:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:48,424 INFO L225 Difference]: With dead ends: 29 [2021-12-06 23:05:48,424 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 23:05:48,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=56, Invalid=117, Unknown=15, NotChecked=232, Total=420 [2021-12-06 23:05:48,428 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:48,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 37 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 7 Unknown, 75 Unchecked, 20.3s Time] [2021-12-06 23:05:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 23:05:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-12-06 23:05:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-06 23:05:48,438 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2021-12-06 23:05:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:48,439 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-06 23:05:48,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-06 23:05:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:05:48,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:48,440 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:48,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 23:05:48,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:05:48,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1648833135, now seen corresponding path program 2 times [2021-12-06 23:05:48,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:05:48,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565638034] [2021-12-06 23:05:48,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:05:48,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:05:48,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:05:48,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:05:48,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:05:53,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:05:53,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:53,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:05:53,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:56,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:01,654 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 31 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:06:06,890 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 32 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:06:09,297 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from false [2021-12-06 23:06:11,709 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from true [2021-12-06 23:06:16,949 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 31 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:06:22,191 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 32 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:06:33,921 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from false [2021-12-06 23:06:36,123 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1)))))) is different from true [2021-12-06 23:06:47,719 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))))))) is different from false [2021-12-06 23:06:49,943 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse3) .cse3) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse3) .cse3))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse2 .cse3))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse2 .cse2)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))))))) is different from true [2021-12-06 23:06:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 23:06:52,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:06:52,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565638034] [2021-12-06 23:06:52,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565638034] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:52,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:06:52,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-06 23:06:52,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640554316] [2021-12-06 23:06:52,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:52,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:06:52,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:06:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:06:52,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=35, Unknown=6, NotChecked=42, Total=110 [2021-12-06 23:06:52,150 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,554 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse2))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse2 |c_ULTIMATE.start_main_~d~0#1|) (not (fp.lt .cse0 (fp.neg .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from false [2021-12-06 23:06:56,780 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse2))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse2 |c_ULTIMATE.start_main_~d~0#1|) (not (fp.lt .cse0 (fp.neg .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-12-06 23:06:59,017 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse2))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse2 |c_ULTIMATE.start_SqrtR_~Input#1|) (not (fp.gt .cse0 .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from false [2021-12-06 23:07:01,234 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 .cse2))) (.cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse2 |c_ULTIMATE.start_SqrtR_~Input#1|) (not (fp.gt .cse0 .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-12-06 23:07:03,529 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (.cse2 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse0) (not (fp.gt .cse1 .cse2)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse0 |c_ULTIMATE.start_SqrtR_~Input#1|) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-12-06 23:07:05,949 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse3 |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (.cse2 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse3 .cse3)))) (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| .cse0) (not (fp.gt .cse1 .cse2)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse0 |c_ULTIMATE.start_SqrtR_~Input#1|) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-12-06 23:07:08,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:10,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:12,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:15,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:17,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:20,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:22,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:25,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:27,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:29,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:31,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:31,829 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-12-06 23:07:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:07:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 23:07:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:31,830 INFO L225 Difference]: With dead ends: 32 [2021-12-06 23:07:31,830 INFO L226 Difference]: Without dead ends: 21 [2021-12-06 23:07:31,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=33, Invalid=35, Unknown=12, NotChecked=102, Total=182 [2021-12-06 23:07:31,832 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:31,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 10 Unknown, 39 Unchecked, 26.0s Time] [2021-12-06 23:07:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-06 23:07:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-06 23:07:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-12-06 23:07:31,837 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2021-12-06 23:07:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:31,837 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-12-06 23:07:31,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-12-06 23:07:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:07:31,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:31,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:31,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 23:07:32,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:07:32,040 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:07:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -661873811, now seen corresponding path program 1 times [2021-12-06 23:07:32,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:07:32,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839792044] [2021-12-06 23:07:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:32,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:07:32,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:07:32,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:07:32,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:07:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:36,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:07:36,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:38,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:46,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:07:46,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839792044] [2021-12-06 23:07:46,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839792044] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:46,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:07:46,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-06 23:07:46,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401019770] [2021-12-06 23:07:46,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:46,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:07:46,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:07:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:07:46,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:07:46,399 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:49,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:52,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:55,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:07:59,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:08:01,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:08:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:03,129 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2021-12-06 23:08:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:08:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 23:08:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:03,133 INFO L225 Difference]: With dead ends: 36 [2021-12-06 23:08:03,133 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 23:08:03,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:03,136 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:03,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 5 Unknown, 0 Unchecked, 16.3s Time] [2021-12-06 23:08:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 23:08:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-06 23:08:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-12-06 23:08:03,146 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2021-12-06 23:08:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:03,146 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-12-06 23:08:03,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-12-06 23:08:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:08:03,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:03,148 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:03,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:08:03,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:08:03,349 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1113133551, now seen corresponding path program 1 times [2021-12-06 23:08:03,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:08:03,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33610011] [2021-12-06 23:08:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:03,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:08:03,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:08:03,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:08:03,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:08:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:08:08,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:15,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:26,615 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) is different from false [2021-12-06 23:08:28,698 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) is different from true [2021-12-06 23:08:33,825 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:08:40,775 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_SqrtR_~Input#1|))) (fp.add c_currentRoundingMode .cse0 .cse0))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|)) (let ((.cse1 (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_SqrtR_~Input#1|))) (fp.add c_currentRoundingMode .cse2 .cse2)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1)))) is different from false [2021-12-06 23:08:43,102 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_SqrtR_~Input#1|))) (fp.add c_currentRoundingMode .cse0 .cse0))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|)) (let ((.cse1 (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_SqrtR_~Input#1|))) (fp.add c_currentRoundingMode .cse2 .cse2)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1)))) is different from true [2021-12-06 23:08:52,874 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:08:55,188 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse2 .cse2))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) is different from false [2021-12-06 23:08:57,521 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse2 .cse2))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) is different from true [2021-12-06 23:09:07,400 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:09:09,749 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse2))))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse4))))) (fp.add c_currentRoundingMode .cse3 .cse3))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) is different from false [2021-12-06 23:09:12,103 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse2))))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse4))))) (fp.add c_currentRoundingMode .cse3 .cse3))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) is different from true [2021-12-06 23:09:21,968 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:09:31,823 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:09:41,715 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:09:51,568 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:10:01,444 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:10:11,318 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:10:21,198 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:10:31,049 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:10:40,893 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:10:58,290 WARN L227 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 17 DAG size of output: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:10:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2021-12-06 23:10:58,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:10:58,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33610011] [2021-12-06 23:10:58,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33610011] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:58,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:10:58,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 23:10:58,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760720131] [2021-12-06 23:10:58,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:58,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:10:58,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:10:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:10:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=62, Unknown=9, NotChecked=76, Total=182 [2021-12-06 23:10:58,293 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:00,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:11:03,182 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse0 |c_ULTIMATE.start_main_~d~0#1|) (or (let ((.cse1 (let ((.cse2 (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse0)))) (fp.add c_currentRoundingMode .cse2 .cse2)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse4))))) (fp.add c_currentRoundingMode .cse3 .cse3))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 23:11:05,415 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse3 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse3 .cse3))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse2 .cse2) |c_ULTIMATE.start_main_~d~0#1|))) is different from false [2021-12-06 23:11:07,746 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse3 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~d~0#1|))) (fp.add c_currentRoundingMode .cse3 .cse3))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse2 .cse2) |c_ULTIMATE.start_main_~d~0#1|))) is different from true [2021-12-06 23:11:10,106 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.add c_currentRoundingMode .cse0 .cse0) |c_ULTIMATE.start_SqrtR_~Input#1|) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_SqrtR_~Input#1|))) (fp.add c_currentRoundingMode .cse1 .cse1))) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|)) (let ((.cse2 (let ((.cse3 (fp.div c_currentRoundingMode .cse0 |c_ULTIMATE.start_SqrtR_~Input#1|))) (fp.add c_currentRoundingMode .cse3 .cse3)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse2) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse2)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 23:11:12,216 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode .cse0 .cse0))) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (or (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_17| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_17|))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 23:11:15,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 23:11:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:15,004 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2021-12-06 23:11:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:11:15,403 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 23:11:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:15,403 INFO L225 Difference]: With dead ends: 38 [2021-12-06 23:11:15,403 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 23:11:15,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=43, Invalid=65, Unknown=14, NotChecked=184, Total=306 [2021-12-06 23:11:15,404 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:15,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 49 Unchecked, 5.3s Time] [2021-12-06 23:11:15,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 23:11:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 23:11:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-06 23:11:15,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-12-06 23:11:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:15,410 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-06 23:11:15,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-06 23:11:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:11:15,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:15,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:15,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:11:15,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:11:15,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:11:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash 199056399, now seen corresponding path program 2 times [2021-12-06 23:11:15,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:11:15,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814544819] [2021-12-06 23:11:15,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:11:15,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:11:15,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:11:15,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:11:15,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:11:22,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:11:22,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:22,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:11:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:45,969 WARN L227 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:11:58,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-12-06 23:11:58,017 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-12-06 23:11:58,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:11:58,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814544819] [2021-12-06 23:11:58,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-12-06 23:11:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510913036] [2021-12-06 23:11:58,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:11:58,019 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 23:11:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 23:11:58,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 23:11:58,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-12-06 23:12:17,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:12:17,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:17,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:12:17,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:17,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-12-06 23:12:17,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143183798] [2021-12-06 23:12:17,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:12:17,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:17,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:17,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:17,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f96d11-9285-4db8-9f29-9161b628b4cb/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process