./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i --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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:58:13,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:58:13,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:58:13,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:58:13,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:58:13,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:58:13,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:58:13,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:58:13,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:58:13,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:58:13,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:58:13,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:58:13,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:58:13,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:58:13,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:58:13,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:58:13,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:58:13,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:58:13,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:58:13,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:58:13,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:58:13,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:58:13,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:58:13,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:58:13,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:58:13,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:58:13,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:58:13,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:58:13,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:58:13,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:58:13,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:58:13,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:58:13,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:58:13,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:58:13,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:58:13,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:58:13,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:58:13,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:58:13,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:58:13,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:58:13,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:58:13,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:58:13,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:58:13,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:58:13,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:58:13,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:58:13,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:58:13,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:58:13,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:58:13,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:58:13,614 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:58:13,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:58:13,614 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:58:13,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:58:13,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:58:13,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:58:13,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:58:13,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:58:13,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:58:13,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:13,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:58:13,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:58:13,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:58:13,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:58:13,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:58:13,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:58:13,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:58:13,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:58:13,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:58:13,623 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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2021-12-06 18:58:13,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:58:13,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:58:13,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:58:13,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:58:13,813 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:58:13,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-12-06 18:58:13,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/50926ba48/a771149555a946b8a9822da201ca8e10/FLAG5ee9d1937 [2021-12-06 18:58:14,232 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:58:14,233 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-12-06 18:58:14,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/50926ba48/a771149555a946b8a9822da201ca8e10/FLAG5ee9d1937 [2021-12-06 18:58:14,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/50926ba48/a771149555a946b8a9822da201ca8e10 [2021-12-06 18:58:14,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:58:14,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:58:14,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:14,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:58:14,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:58:14,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471098d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14, skipping insertion in model container [2021-12-06 18:58:14,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:58:14,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:58:14,374 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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-12-06 18:58:14,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:14,390 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:58:14,399 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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-12-06 18:58:14,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:14,410 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:58:14,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14 WrapperNode [2021-12-06 18:58:14,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:14,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:14,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:58:14,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:58:14,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,434 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2021-12-06 18:58:14,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:14,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:58:14,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:58:14,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:58:14,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:58:14,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:58:14,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:58:14,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:58:14,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:14,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:14,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:58:14,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:58:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:58:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:58:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:58:14,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:58:14,558 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:58:14,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:58:14,613 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:58:14,617 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:58:14,617 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:58:14,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:14 BoogieIcfgContainer [2021-12-06 18:58:14,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:58:14,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:58:14,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:58:14,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:58:14,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:58:14" (1/3) ... [2021-12-06 18:58:14,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7248b810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:14, skipping insertion in model container [2021-12-06 18:58:14,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (2/3) ... [2021-12-06 18:58:14,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7248b810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:14, skipping insertion in model container [2021-12-06 18:58:14,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:14" (3/3) ... [2021-12-06 18:58:14,625 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2021-12-06 18:58:14,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:58:14,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:58:14,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:58:14,672 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 18:58:14,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:58:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 18:58:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:58:14,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:14,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:58:14,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-12-06 18:58:14,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:14,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178042154] [2021-12-06 18:58:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:14,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:58:14,767 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:58:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:58:14,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:58:14,789 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:58:14,790 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:58:14,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:58:14,795 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-06 18:58:14,797 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:58:14,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:58:14 BoogieIcfgContainer [2021-12-06 18:58:14,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:58:14,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:58:14,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:58:14,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:58:14,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:14" (3/4) ... [2021-12-06 18:58:14,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:58:14,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:58:14,815 INFO L158 Benchmark]: Toolchain (without parser) took 565.53ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 61.8MB in the end (delta: 26.8MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2021-12-06 18:58:14,816 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:58:14,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.49ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 85.7MB in the end (delta: 2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:58:14,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.85ms. Allocated memory is still 113.2MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:58:14,817 INFO L158 Benchmark]: Boogie Preprocessor took 13.98ms. Allocated memory is still 113.2MB. Free memory was 84.2MB in the beginning and 83.2MB in the end (delta: 971.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:58:14,817 INFO L158 Benchmark]: RCFGBuilder took 169.62ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 74.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:58:14,818 INFO L158 Benchmark]: TraceAbstraction took 190.58ms. Allocated memory is still 113.2MB. Free memory was 74.4MB in the beginning and 62.3MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:58:14,818 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 61.8MB in the end (delta: 423.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:58:14,821 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 77.6MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.49ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 85.7MB in the end (delta: 2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.85ms. Allocated memory is still 113.2MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.98ms. Allocated memory is still 113.2MB. Free memory was 84.2MB in the beginning and 83.2MB in the end (delta: 971.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 169.62ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 74.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 190.58ms. Allocated memory is still 113.2MB. Free memory was 74.4MB in the beginning and 62.3MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 61.8MB in the end (delta: 423.8kB). Peak memory consumption was 2.1MB. 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: 13]: 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 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; VAL [x=1] [L23] COND FALSE !(x1 != x) VAL [x=1] [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 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=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 18:58:14,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:58:16,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:58:16,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:58:16,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:58:16,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:58:16,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:58:16,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:58:16,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:58:16,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:58:16,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:58:16,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:58:16,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:58:16,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:58:16,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:58:16,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:58:16,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:58:16,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:58:16,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:58:16,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:58:16,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:58:16,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:58:16,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:58:16,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:58:16,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:58:16,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:58:16,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:58:16,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:58:16,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:58:16,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:58:16,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:58:16,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:58:16,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:58:16,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:58:16,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:58:16,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:58:16,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:58:16,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:58:16,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:58:16,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:58:16,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:58:16,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:58:16,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 18:58:16,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:58:16,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:58:16,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:58:16,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:58:16,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:58:16,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:58:16,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:58:16,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:58:16,437 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:58:16,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:58:16,437 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:58:16,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:58:16,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:58:16,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:58:16,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:58:16,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:58:16,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:58:16,438 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:58:16,439 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:58:16,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:58:16,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:58:16,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:58:16,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:58:16,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:58:16,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:58:16,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:58:16,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:16,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:58:16,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:58:16,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:58:16,441 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:58:16,441 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:58:16,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:58:16,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:58:16,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:58:16,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:58:16,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:58:16,442 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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f4e199f6665b6821475945a72290dab8d4d620db3a5150842d6f2ec9f4c430d [2021-12-06 18:58:16,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:58:16,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:58:16,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:58:16,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:58:16,713 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:58:16,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-12-06 18:58:16,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/c73ef1e4f/afff830597a140b3b17afb8b40c66747/FLAG973dab267 [2021-12-06 18:58:17,142 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:58:17,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2021-12-06 18:58:17,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/c73ef1e4f/afff830597a140b3b17afb8b40c66747/FLAG973dab267 [2021-12-06 18:58:17,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/data/c73ef1e4f/afff830597a140b3b17afb8b40c66747 [2021-12-06 18:58:17,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:58:17,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:58:17,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:17,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:58:17,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:58:17,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d34aff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17, skipping insertion in model container [2021-12-06 18:58:17,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:58:17,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:58:17,288 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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-12-06 18:58:17,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:17,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:58:17,325 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_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/sv-benchmarks/c/floats-esbmc-regression/Double_div.i[804,817] [2021-12-06 18:58:17,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:17,346 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:58:17,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17 WrapperNode [2021-12-06 18:58:17,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:17,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:17,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:58:17,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:58:17,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,379 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-12-06 18:58:17,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:17,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:58:17,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:58:17,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:58:17,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:58:17,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:58:17,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:58:17,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:58:17,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (1/1) ... [2021-12-06 18:58:17,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:17,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:17,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:58:17,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:58:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:58:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 18:58:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:58:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:58:17,520 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:58:17,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:58:20,540 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:58:20,545 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:58:20,545 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:58:20,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:20 BoogieIcfgContainer [2021-12-06 18:58:20,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:58:20,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:58:20,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:58:20,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:58:20,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:58:17" (1/3) ... [2021-12-06 18:58:20,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b2b6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:20, skipping insertion in model container [2021-12-06 18:58:20,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:17" (2/3) ... [2021-12-06 18:58:20,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b2b6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:20, skipping insertion in model container [2021-12-06 18:58:20,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:20" (3/3) ... [2021-12-06 18:58:20,552 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2021-12-06 18:58:20,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:58:20,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:58:20,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:58:20,595 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 18:58:20,595 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:58:20,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 18:58:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:58:20,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:20,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:58:20,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-12-06 18:58:20,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:20,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079855208] [2021-12-06 18:58:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:20,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:20,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:20,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:20,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:58:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:58:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:29,857 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 18:58:29,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:29,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:29,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079855208] [2021-12-06 18:58:29,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079855208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:29,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:29,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:58:29,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045785820] [2021-12-06 18:58:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:29,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:29,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2021-12-06 18:58:29,898 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:38,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:58:41,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:58:44,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:58:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:44,358 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-12-06 18:58:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:58:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:44,823 INFO L225 Difference]: With dead ends: 20 [2021-12-06 18:58:44,823 INFO L226 Difference]: Without dead ends: 8 [2021-12-06 18:58:44,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=9, Invalid=10, Unknown=1, NotChecked=0, Total=20 [2021-12-06 18:58:44,827 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:44,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-12-06 18:58:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-06 18:58:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-06 18:58:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 18:58:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-12-06 18:58:44,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-12-06 18:58:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:44,849 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-12-06 18:58:44,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-12-06 18:58:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:58:44,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:44,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:44,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:45,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:45,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-12-06 18:58:45,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:45,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138145169] [2021-12-06 18:58:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:45,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:45,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:45,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:58:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:45,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:58:45,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:50,219 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= (fp.div roundNearestTiesToEven |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) |c_ULTIMATE.start_main_~x~0#1|))) is different from true [2021-12-06 18:58:50,233 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 18:58:50,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:53,863 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from false [2021-12-06 18:58:55,875 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 18:58:55,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:55,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138145169] [2021-12-06 18:58:55,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138145169] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:55,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:55,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-06 18:58:55,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576166455] [2021-12-06 18:58:55,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:55,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:58:55,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:55,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:58:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2021-12-06 18:58:55,878 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 18:58:59,163 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 18:59:10,935 WARN L227 SmtUtils]: Spent 10.59s on a formula simplification. DAG size of input: 14 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:59:13,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:59:15,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:59:18,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:59:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:18,235 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-12-06 18:59:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:59:18,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 7 [2021-12-06 18:59:18,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:18,237 INFO L225 Difference]: With dead ends: 14 [2021-12-06 18:59:18,237 INFO L226 Difference]: Without dead ends: 10 [2021-12-06 18:59:18,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=17, Invalid=22, Unknown=3, NotChecked=30, Total=72 [2021-12-06 18:59:18,238 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:18,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 2 Unknown, 12 Unchecked, 8.4s Time] [2021-12-06 18:59:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-06 18:59:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-06 18:59:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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 18:59:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-06 18:59:18,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-12-06 18:59:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:18,242 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-06 18:59:18,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 18:59:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-06 18:59:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:59:18,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:18,243 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:18,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:59:18,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:59:18,445 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:59:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2021-12-06 18:59:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:59:18,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539581333] [2021-12-06 18:59:18,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:59:18,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:59:18,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:59:18,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:59:18,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:59:19,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:59:19,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:59:19,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 18:59:19,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:22,502 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 18:59:29,934 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 18:59:38,431 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 18:59:40,840 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 18:59:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-06 18:59:40,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:50,084 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-12-06 18:59:52,198 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-12-06 19:00:03,987 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-12-06 19:00:06,209 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-12-06 19:00:15,934 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:00:18,263 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-12-06 19:00:20,589 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-12-06 19:00:25,987 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:00:31,156 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:00:33,483 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-12-06 19:00:35,819 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-12-06 19:00:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-06 19:00:35,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:00:35,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539581333] [2021-12-06 19:00:35,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539581333] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:00:35,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:00:35,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-12-06 19:00:35,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241422267] [2021-12-06 19:00:35,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:35,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:00:35,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:00:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:00:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=32, Unknown=11, NotChecked=112, Total=182 [2021-12-06 19:00:35,822 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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 19:00:38,186 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:00:40,526 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:00:42,766 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:00:44,894 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:00:47,228 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:00:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:47,294 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-12-06 19:00:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:00:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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 9 [2021-12-06 19:00:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:47,295 INFO L225 Difference]: With dead ends: 15 [2021-12-06 19:00:47,295 INFO L226 Difference]: Without dead ends: 11 [2021-12-06 19:00:47,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=37, Invalid=37, Unknown=16, NotChecked=252, Total=342 [2021-12-06 19:00:47,298 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:47,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2021-12-06 19:00:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-06 19:00:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-06 19:00:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 19:00:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-12-06 19:00:47,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-12-06 19:00:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:47,303 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-12-06 19:00:47,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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 19:00:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-12-06 19:00:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:00:47,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:47,304 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:47,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 19:00:47,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:00:47,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:00:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 3 times [2021-12-06 19:00:47,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:00:47,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515810] [2021-12-06 19:00:47,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:00:47,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:00:47,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:00:47,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:00:47,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 19:00:48,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 19:00:48,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:00:48,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 19:00:48,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:52,381 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:01:00,339 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:01:05,755 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:01:08,521 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2021-12-06 19:01:18,194 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:01:21,413 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:01:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-12-06 19:01:26,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:34,546 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-12-06 19:01:36,658 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-12-06 19:01:48,501 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-12-06 19:01:50,729 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-12-06 19:01:56,120 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:02:01,271 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:02:03,591 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-12-06 19:02:05,917 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-12-06 19:02:12,279 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:02:18,070 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:02:20,510 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-12-06 19:02:22,949 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-12-06 19:02:28,618 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 12 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:02:34,522 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 12 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:02:36,972 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-12-06 19:02:39,429 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-12-06 19:02:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-12-06 19:02:39,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:39,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515810] [2021-12-06 19:02:39,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515810] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:02:39,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:39,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-12-06 19:02:39,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436771470] [2021-12-06 19:02:39,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:39,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:02:39,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:02:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=33, Unknown=14, NotChecked=162, Total=240 [2021-12-06 19:02:39,432 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 19:02:41,935 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-12-06 19:02:44,391 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:02:46,742 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:02:49,012 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:03:31,836 WARN L227 SmtUtils]: Spent 25.93s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:03:36,111 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:03:38,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 19:03:40,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 19:03:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:03:40,352 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-12-06 19:03:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:03:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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) Word has length 10 [2021-12-06 19:03:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:03:40,354 INFO L225 Difference]: With dead ends: 16 [2021-12-06 19:03:40,354 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 19:03:40,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 90.4s TimeCoverageRelationStatistics Valid=44, Invalid=45, Unknown=23, NotChecked=350, Total=462 [2021-12-06 19:03:40,357 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:03:40,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 66 Unchecked, 5.2s Time] [2021-12-06 19:03:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 19:03:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 19:03:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 19:03:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-12-06 19:03:40,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-12-06 19:03:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:03:40,364 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-12-06 19:03:40,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 19:03:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-12-06 19:03:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:03:40,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:03:40,366 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-12-06 19:03:40,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 19:03:40,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:03:40,568 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:03:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:03:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 4 times [2021-12-06 19:03:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:03:40,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313784321] [2021-12-06 19:03:40,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:03:40,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:03:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:03:40,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:03:40,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 19:03:41,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:03:41,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:03:41,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 19:03:41,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:03:45,503 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:03:53,403 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:03:58,821 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:04:01,652 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2021-12-06 19:04:07,609 WARN L227 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:04:11,361 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:04:16,440 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= (fp.div roundNearestTiesToEven |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|))) is different from true [2021-12-06 19:04:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-12-06 19:04:16,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:04:21,402 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from false [2021-12-06 19:04:23,516 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from true [2021-12-06 19:04:30,207 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:04:38,478 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:04:40,830 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:04:48,228 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:04:50,683 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:04:55,841 WARN L227 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:04:58,423 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:05:01,013 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:05:06,182 WARN L227 SmtUtils]: Spent 5.17s 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 19:05:08,775 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:05:11,360 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:05:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-12-06 19:05:11,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:05:11,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313784321] [2021-12-06 19:05:11,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313784321] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:05:11,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:05:11,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 19:05:11,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55592670] [2021-12-06 19:05:11,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:05:11,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:05:11,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:05:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:05:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=18, Unknown=16, NotChecked=176, Total=240 [2021-12-06 19:05:11,362 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 19:05:13,986 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:05:16,599 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:05:19,092 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) .cse0) .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:05:21,446 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from false [2021-12-06 19:05:23,802 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from true [2021-12-06 19:05:26,041 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from false [2021-12-06 19:05:28,286 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from true [2021-12-06 19:05:30,783 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-12-06 19:05:39,232 WARN L227 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 18 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:05:40,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 19:05:43,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 19:05:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:05:43,236 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-12-06 19:05:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:05:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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) Word has length 11 [2021-12-06 19:05:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:05:43,237 INFO L225 Difference]: With dead ends: 18 [2021-12-06 19:05:43,237 INFO L226 Difference]: Without dead ends: 14 [2021-12-06 19:05:43,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.4s TimeCoverageRelationStatistics Valid=45, Invalid=29, Unknown=24, NotChecked=408, Total=506 [2021-12-06 19:05:43,239 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:05:43,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 71 Unchecked, 4.0s Time] [2021-12-06 19:05:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-06 19:05:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-06 19:05:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 19:05:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-06 19:05:43,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-12-06 19:05:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:05:43,243 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-06 19:05:43,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 19:05:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-06 19:05:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:05:43,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:05:43,244 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2021-12-06 19:05:43,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-06 19:05:43,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:05:43,445 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:05:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:05:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash 86212784, now seen corresponding path program 5 times [2021-12-06 19:05:43,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:05:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933647515] [2021-12-06 19:05:43,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:05:43,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:05:43,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:05:43,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:05:43,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 19:05:44,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 19:05:44,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:05:45,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 19:05:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:05:49,525 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:05:57,412 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:06:02,848 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:06:05,693 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2021-12-06 19:06:11,668 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:06:15,499 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:06:21,948 WARN L227 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:06:24,422 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~x1~0#1|)) is different from true [2021-12-06 19:06:31,443 WARN L227 SmtUtils]: Spent 6.98s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:06:34,340 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-06 19:06:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 27 not checked. [2021-12-06 19:06:40,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:06:47,462 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from false [2021-12-06 19:06:49,584 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from true [2021-12-06 19:06:56,309 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:06:58,547 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:07:05,636 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:07:07,991 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:07:15,444 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:07:17,926 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:07:23,126 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:07:25,723 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-12-06 19:07:28,326 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-12-06 19:07:34,007 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 12 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:07:36,218 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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 19:07:36,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-12-06 19:07:36,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:07:36,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933647515] [2021-12-06 19:07:36,219 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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 19:07:36,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409459284] [2021-12-06 19:07:36,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:07:36,219 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:07:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:07:36,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:07:36,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-12-06 19:07:46,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 19:07:46,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:07:46,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 19:07:46,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:07:46,073 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/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 19:07:46,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346072844] [2021-12-06 19:07:46,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:07:46,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:07:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:07:46,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:07:46,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d357e51-61ec-4828-9111-1d3ec7bf9f0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process