./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer --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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer --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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:21:05,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:21:05,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:21:05,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:21:05,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:21:05,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:21:05,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:21:05,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:21:05,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:21:05,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:21:05,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:21:05,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:21:05,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:21:05,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:21:05,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:21:05,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:21:05,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:21:05,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:21:05,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:21:05,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:21:05,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:21:05,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:21:05,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:21:05,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:21:05,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:21:05,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:21:05,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:21:05,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:21:05,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:21:05,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:21:05,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:21:05,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:21:05,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:21:05,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:21:05,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:21:05,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:21:05,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:21:05,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:21:05,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:21:05,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:21:05,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:21:05,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:21:05,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:21:05,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:21:05,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:21:05,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:21:05,400 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:21:05,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:21:05,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:21:05,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:21:05,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:21:05,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:21:05,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:21:05,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:21:05,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:21:05,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:21:05,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:21:05,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:21:05,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:21:05,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:21:05,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:21:05,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:21:05,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:21:05,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:21:05,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:21:05,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:21:05,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:21:05,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:21:05,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:21:05,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:21:05,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:21:05,415 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-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-11-29 19:21:05,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:21:05,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:21:05,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:21:05,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:21:05,768 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:21:05,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-29 19:21:05,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/4ed78632a/53e6bc154028476284532a0cc624a873/FLAG971729b88 [2020-11-29 19:21:06,486 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:21:06,487 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-29 19:21:06,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/4ed78632a/53e6bc154028476284532a0cc624a873/FLAG971729b88 [2020-11-29 19:21:06,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/4ed78632a/53e6bc154028476284532a0cc624a873 [2020-11-29 19:21:06,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:21:06,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:21:06,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:21:06,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:21:06,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:21:06,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:21:06" (1/1) ... [2020-11-29 19:21:06,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a679356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:06, skipping insertion in model container [2020-11-29 19:21:06,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:21:06" (1/1) ... [2020-11-29 19:21:06,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:21:06,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:21:07,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:21:07,137 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:21:07,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:21:07,202 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:21:07,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07 WrapperNode [2020-11-29 19:21:07,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:21:07,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:21:07,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:21:07,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:21:07,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:21:07,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:21:07,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:21:07,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:21:07,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... [2020-11-29 19:21:07,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:21:07,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:21:07,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:21:07,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:21:07,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:21:07,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:21:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:21:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 19:21:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:21:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 19:21:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:21:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:21:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:21:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:21:08,171 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:21:08,171 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 19:21:08,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:21:08 BoogieIcfgContainer [2020-11-29 19:21:08,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:21:08,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:21:08,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:21:08,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:21:08,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:21:06" (1/3) ... [2020-11-29 19:21:08,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4845826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:21:08, skipping insertion in model container [2020-11-29 19:21:08,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:07" (2/3) ... [2020-11-29 19:21:08,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4845826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:21:08, skipping insertion in model container [2020-11-29 19:21:08,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:21:08" (3/3) ... [2020-11-29 19:21:08,200 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-29 19:21:08,213 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:21:08,219 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:21:08,236 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:21:08,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:21:08,291 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:21:08,292 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:21:08,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:21:08,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:21:08,292 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:21:08,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:21:08,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:21:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-29 19:21:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:21:08,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:21:08,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:21:08,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:21:08,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:21:08,354 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-11-29 19:21:08,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:21:08,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900181939] [2020-11-29 19:21:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:21:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:21:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:08,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900181939] [2020-11-29 19:21:08,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:21:08,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:21:08,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535308915] [2020-11-29 19:21:08,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:21:08,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:21:08,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:21:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:21:08,566 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-29 19:21:08,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:21:08,593 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-29 19:21:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:21:08,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 19:21:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:21:08,607 INFO L225 Difference]: With dead ends: 105 [2020-11-29 19:21:08,607 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 19:21:08,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:21:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 19:21:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 19:21:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 19:21:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-11-29 19:21:08,655 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-11-29 19:21:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:21:08,656 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-11-29 19:21:08,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:21:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-11-29 19:21:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:21:08,657 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:21:08,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:21:08,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:21:08,658 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:21:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:21:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-11-29 19:21:08,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:21:08,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000660302] [2020-11-29 19:21:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:21:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:21:08,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:21:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:21:08,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:21:08,772 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:21:08,772 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:21:08,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:21:08,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:21:08 BoogieIcfgContainer [2020-11-29 19:21:08,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:21:08,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:21:08,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:21:08,810 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:21:08,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:21:08" (3/4) ... [2020-11-29 19:21:08,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:21:08,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:21:08,817 INFO L168 Benchmark]: Toolchain (without parser) took 2011.11 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 60.9 MB in the beginning and 81.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:08,818 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 68.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:21:08,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.74 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 69.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:08,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.41 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:08,821 INFO L168 Benchmark]: Boogie Preprocessor took 80.51 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 65.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:08,822 INFO L168 Benchmark]: RCFGBuilder took 800.79 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 37.2 MB in the end (delta: 28.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:08,823 INFO L168 Benchmark]: TraceAbstraction took 622.29 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 36.8 MB in the beginning and 82.4 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:21:08,824 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 121.6 MB. Free memory was 82.4 MB in the beginning and 81.7 MB in the end (delta: 706.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:08,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 68.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.74 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 69.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.41 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 67.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.51 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 65.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 800.79 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 37.2 MB in the end (delta: 28.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 622.29 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 36.8 MB in the beginning and 82.4 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.44 ms. Allocated memory is still 121.6 MB. Free memory was 82.4 MB in the beginning and 81.7 MB in the end (delta: 706.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:21:11,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:21:11,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:21:11,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:21:11,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:21:11,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:21:11,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:21:11,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:21:11,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:21:11,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:21:11,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:21:11,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:21:11,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:21:11,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:21:11,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:21:11,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:21:11,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:21:11,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:21:11,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:21:11,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:21:11,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:21:11,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:21:11,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:21:11,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:21:11,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:21:11,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:21:11,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:21:11,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:21:11,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:21:11,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:21:11,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:21:11,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:21:11,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:21:11,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:21:11,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:21:11,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:21:11,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:21:11,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:21:11,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:21:11,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:21:11,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:21:11,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:21:11,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:21:11,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:21:11,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:21:11,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:21:11,914 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:21:11,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:21:11,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:21:11,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:21:11,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:21:11,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:21:11,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:21:11,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:21:11,917 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:21:11,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:21:11,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:21:11,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:21:11,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:21:11,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:21:11,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:21:11,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:21:11,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:21:11,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:21:11,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:21:11,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:21:11,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:21:11,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:21:11,921 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:21:11,921 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:21:11,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:21:11,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:21:11,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:21:11,936 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-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-11-29 19:21:12,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:21:12,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:21:12,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:21:12,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:21:12,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:21:12,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-29 19:21:12,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/d7851d956/25ccef35f75f4ce3b40ed79c8ce73ada/FLAG6c633a54b [2020-11-29 19:21:13,159 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:21:13,162 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-29 19:21:13,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/d7851d956/25ccef35f75f4ce3b40ed79c8ce73ada/FLAG6c633a54b [2020-11-29 19:21:13,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/data/d7851d956/25ccef35f75f4ce3b40ed79c8ce73ada [2020-11-29 19:21:13,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:21:13,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:21:13,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:21:13,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:21:13,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:21:13,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:13,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502c75a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13, skipping insertion in model container [2020-11-29 19:21:13,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:13,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:21:13,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:21:13,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:21:13,801 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:21:13,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:21:13,897 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:21:13,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13 WrapperNode [2020-11-29 19:21:13,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:21:13,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:21:13,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:21:13,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:21:13,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:13,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:13,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:21:13,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:21:13,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:21:13,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:21:14,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... [2020-11-29 19:21:14,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:21:14,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:21:14,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:21:14,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:21:14,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:21:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 19:21:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 19:21:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:21:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:21:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:21:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:21:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:21:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:21:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:21:18,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:21:18,345 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 19:21:18,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:21:18 BoogieIcfgContainer [2020-11-29 19:21:18,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:21:18,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:21:18,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:21:18,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:21:18,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:21:13" (1/3) ... [2020-11-29 19:21:18,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b034ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:21:18, skipping insertion in model container [2020-11-29 19:21:18,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:21:13" (2/3) ... [2020-11-29 19:21:18,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b034ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:21:18, skipping insertion in model container [2020-11-29 19:21:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:21:18" (3/3) ... [2020-11-29 19:21:18,358 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-29 19:21:18,371 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:21:18,376 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:21:18,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:21:18,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:21:18,426 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:21:18,426 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:21:18,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:21:18,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:21:18,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:21:18,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:21:18,427 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:21:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-29 19:21:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:21:18,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:21:18,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:21:18,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:21:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:21:18,455 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-11-29 19:21:18,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:21:18,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642654280] [2020-11-29 19:21:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:21:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:21:19,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:21:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:21:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:19,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:21:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:19,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642654280] [2020-11-29 19:21:19,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:21:19,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:21:19,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673261273] [2020-11-29 19:21:19,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:21:19,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:21:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:21:19,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:21:19,127 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-29 19:21:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:21:19,153 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-29 19:21:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:21:19,155 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 19:21:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:21:19,167 INFO L225 Difference]: With dead ends: 105 [2020-11-29 19:21:19,167 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 19:21:19,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:21:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 19:21:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 19:21:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 19:21:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-11-29 19:21:19,215 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-11-29 19:21:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:21:19,216 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-11-29 19:21:19,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:21:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-11-29 19:21:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:21:19,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:21:19,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:21:19,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:21:19,431 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:21:19,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:21:19,432 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-11-29 19:21:19,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:21:19,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65718069] [2020-11-29 19:21:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:21:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:21:19,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:21:19,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:21:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:20,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:21:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:20,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65718069] [2020-11-29 19:21:20,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:21:20,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 19:21:20,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470046724] [2020-11-29 19:21:20,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:21:20,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:21:20,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:21:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:21:20,154 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-11-29 19:21:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:21:21,199 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-11-29 19:21:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:21:21,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-29 19:21:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:21:21,604 INFO L225 Difference]: With dead ends: 59 [2020-11-29 19:21:21,604 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 19:21:21,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:21:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 19:21:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 19:21:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 19:21:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-29 19:21:21,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-11-29 19:21:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:21:21,611 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-29 19:21:21,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:21:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-29 19:21:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:21:21,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:21:21,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:21:21,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:21:21,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:21:21,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:21:21,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-11-29 19:21:21,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:21:21,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043770408] [2020-11-29 19:21:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 19:21:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:21:21,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:21:21,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:21:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:22,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:21:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:21:22,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043770408] [2020-11-29 19:21:22,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:21:22,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-29 19:21:22,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901149036] [2020-11-29 19:21:22,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:21:22,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:21:22,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:21:22,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:21:22,057 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-11-29 19:21:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:21:24,195 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-29 19:21:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:21:24,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-29 19:21:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:21:24,196 INFO L225 Difference]: With dead ends: 29 [2020-11-29 19:21:24,196 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 19:21:24,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:21:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 19:21:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-11-29 19:21:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:21:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-29 19:21:24,203 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-11-29 19:21:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:21:24,203 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-29 19:21:24,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:21:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-29 19:21:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:21:24,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:21:24,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:21:24,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:21:24,417 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:21:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:21:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-11-29 19:21:24,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:21:24,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496284359] [2020-11-29 19:21:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 19:21:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:21:25,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:21:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:21:26,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:21:27,089 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:21:27,090 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:21:27,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:21:27,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:21:27 BoogieIcfgContainer [2020-11-29 19:21:27,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:21:27,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:21:27,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:21:27,352 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:21:27,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:21:18" (3/4) ... [2020-11-29 19:21:27,355 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:21:27,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8131434a-73bb-4ba0-8b55-aec54a8b0407/bin/uautomizer/witness.graphml [2020-11-29 19:21:27,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:21:27,441 INFO L168 Benchmark]: Toolchain (without parser) took 13959.05 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 50.0 MB in the beginning and 67.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,441 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 49.7 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:21:27,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.48 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 50.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.55 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 48.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,444 INFO L168 Benchmark]: Boogie Preprocessor took 52.05 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 46.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,445 INFO L168 Benchmark]: RCFGBuilder took 4304.54 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 40.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,446 INFO L168 Benchmark]: TraceAbstraction took 9001.58 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 32.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,447 INFO L168 Benchmark]: Witness Printer took 86.39 ms. Allocated memory is still 88.1 MB. Free memory was 32.5 MB in the beginning and 67.8 MB in the end (delta: -35.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:21:27,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 49.7 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.48 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 50.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.55 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 48.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.05 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 46.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4304.54 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 40.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9001.58 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 32.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 86.39 ms. Allocated memory is still 88.1 MB. Free memory was 32.5 MB in the beginning and 67.8 MB in the end (delta: -35.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 103 SDslu, 24 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! Received shutdown request...