./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.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_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 341305be8cf30067c8ef09b4a168f6c17078b23f ........................................................................................................................................................................................................................................................................................ 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_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 341305be8cf30067c8ef09b4a168f6c17078b23f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:21:21,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:21:21,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:21:21,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:21:21,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:21:21,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:21:21,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:21:21,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:21:21,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:21:21,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:21:21,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:21:21,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:21:21,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:21:21,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:21:21,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:21:21,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:21:21,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:21:21,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:21:21,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:21:21,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:21:21,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:21:21,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:21:21,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:21:21,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:21:21,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:21:21,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:21:21,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:21:21,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:21:21,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:21:21,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:21:21,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:21:21,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:21:21,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:21:21,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:21:21,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:21:21,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:21:21,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:21:21,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:21:21,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:21:21,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:21:21,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:21:21,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:21:21,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:21:21,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:21:21,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:21:21,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:21:21,679 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:21:21,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:21:21,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:21:21,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:21:21,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:21:21,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:21:21,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:21:21,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:21:21,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:21:21,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:21:21,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:21:21,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:21:21,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:21:21,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:21:21,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:21:21,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:21:21,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:21:21,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:21:21,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:21:21,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:21:21,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:21:21,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:21:21,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:21:21,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:21:21,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:21:21,687 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_a3bb1e62-a486-4a8d-a236-599e28c9f994/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-11-30 01:21:22,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:21:22,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:21:22,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:21:22,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:21:22,099 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:21:22,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-30 01:21:22,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/1a5be68c4/f50d32fa97684f7fa97d399ace8363fb/FLAGc25dcad4d [2020-11-30 01:21:22,737 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:21:22,741 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-30 01:21:22,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/1a5be68c4/f50d32fa97684f7fa97d399ace8363fb/FLAGc25dcad4d [2020-11-30 01:21:23,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/1a5be68c4/f50d32fa97684f7fa97d399ace8363fb [2020-11-30 01:21:23,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:21:23,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:21:23,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:21:23,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:21:23,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:21:23,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4c6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23, skipping insertion in model container [2020-11-30 01:21:23,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:21:23,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:21:23,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:21:23,374 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:21:23,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:21:23,423 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:21:23,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23 WrapperNode [2020-11-30 01:21:23,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:21:23,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:21:23,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:21:23,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:21:23,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:21:23,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:21:23,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:21:23,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:21:23,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... [2020-11-30 01:21:23,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:21:23,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:21:23,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:21:23,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:21:23,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 [2020-11-30 01:21:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:21:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:21:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:21:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:21:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:21:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:21:23,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:21:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:21:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:21:24,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:21:24,095 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:21:24,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:24 BoogieIcfgContainer [2020-11-30 01:21:24,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:21:24,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:21:24,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:21:24,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:21:24,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:21:23" (1/3) ... [2020-11-30 01:21:24,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e49a5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:21:24, skipping insertion in model container [2020-11-30 01:21:24,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:23" (2/3) ... [2020-11-30 01:21:24,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e49a5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:21:24, skipping insertion in model container [2020-11-30 01:21:24,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:24" (3/3) ... [2020-11-30 01:21:24,126 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-30 01:21:24,146 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:21:24,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:21:24,165 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:21:24,217 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:21:24,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:21:24,217 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:21:24,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:21:24,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:21:24,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:21:24,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:21:24,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:21:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 01:21:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:21:24,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:21:24,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:21:24,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:21:24,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-11-30 01:21:24,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:21:24,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628340915] [2020-11-30 01:21:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:21:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:24,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628340915] [2020-11-30 01:21:24,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:21:24,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:21:24,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229946740] [2020-11-30 01:21:24,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:21:24,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:21:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:21:24,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:21:24,442 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 01:21:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:21:24,462 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-30 01:21:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:21:24,464 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 01:21:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:21:24,474 INFO L225 Difference]: With dead ends: 41 [2020-11-30 01:21:24,474 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 01:21:24,478 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 [2020-11-30 01:21:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 01:21:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:21:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:21:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-30 01:21:24,539 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-11-30 01:21:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:21:24,540 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-30 01:21:24,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:21:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-30 01:21:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:21:24,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:21:24,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:21:24,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:21:24,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:21:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:24,544 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-11-30 01:21:24,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:21:24,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211314055] [2020-11-30 01:21:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:21:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:21:24,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:21:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:21:24,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:21:24,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:21:24,707 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:21:24,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:21:24,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:21:24 BoogieIcfgContainer [2020-11-30 01:21:24,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:21:24,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:21:24,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:21:24,739 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:21:24,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:24" (3/4) ... [2020-11-30 01:21:24,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:21:24,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:21:24,745 INFO L168 Benchmark]: Toolchain (without parser) took 1691.33 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 98.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:24,746 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:21:24,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.37 ms. Allocated memory is still 130.0 MB. Free memory was 100.8 MB in the beginning and 105.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:24,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.83 ms. Allocated memory is still 130.0 MB. Free memory was 105.6 MB in the beginning and 104.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:24,750 INFO L168 Benchmark]: Boogie Preprocessor took 69.61 ms. Allocated memory is still 130.0 MB. Free memory was 104.1 MB in the beginning and 102.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:24,751 INFO L168 Benchmark]: RCFGBuilder took 513.69 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 86.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:24,752 INFO L168 Benchmark]: TraceAbstraction took 633.63 ms. Allocated memory is still 130.0 MB. Free memory was 86.0 MB in the beginning and 99.1 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:21:24,753 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 130.0 MB. Free memory is still 98.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:21:24,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.37 ms. Allocated memory is still 130.0 MB. Free memory was 100.8 MB in the beginning and 105.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.83 ms. Allocated memory is still 130.0 MB. Free memory was 105.6 MB in the beginning and 104.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.61 ms. Allocated memory is still 130.0 MB. Free memory was 104.1 MB in the beginning and 102.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 513.69 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 86.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 633.63 ms. Allocated memory is still 130.0 MB. Free memory was 86.0 MB in the beginning and 99.1 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 130.0 MB. Free memory is still 98.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L4] __assert_fail("0", "float_req_bl_1071.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 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: 23 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=22occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 [2020-11-30 01:21:27,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:21:27,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:21:27,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:21:27,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:21:27,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:21:27,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:21:27,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:21:27,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:21:27,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:21:27,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:21:27,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:21:27,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:21:27,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:21:27,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:21:27,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:21:27,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:21:27,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:21:27,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:21:27,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:21:27,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:21:27,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:21:27,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:21:27,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:21:27,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:21:27,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:21:27,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:21:27,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:21:27,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:21:27,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:21:27,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:21:27,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:21:27,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:21:27,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:21:27,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:21:27,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:21:27,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:21:27,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:21:27,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:21:27,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:21:27,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:21:27,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:21:27,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:21:27,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:21:27,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:21:27,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:21:27,965 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:21:27,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:21:27,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:21:27,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:21:27,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:21:27,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:21:27,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:21:27,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:21:27,968 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:21:27,969 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:21:27,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:21:27,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:21:27,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:21:27,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:21:27,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:21:27,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:21:27,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:21:27,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:21:27,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:21:27,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:21:27,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:21:27,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:21:27,972 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:21:27,973 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:21:27,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:21:27,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:21:27,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:21:27,974 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_a3bb1e62-a486-4a8d-a236-599e28c9f994/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-11-30 01:21:28,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:21:28,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:21:28,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:21:28,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:21:28,531 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:21:28,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-30 01:21:28,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/287cf9044/8435b2bd4cac44fbad8469aa03eec4b5/FLAG2912ab5a2 [2020-11-30 01:21:29,278 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:21:29,279 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-30 01:21:29,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/287cf9044/8435b2bd4cac44fbad8469aa03eec4b5/FLAG2912ab5a2 [2020-11-30 01:21:29,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/data/287cf9044/8435b2bd4cac44fbad8469aa03eec4b5 [2020-11-30 01:21:29,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:21:29,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:21:29,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:21:29,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:21:29,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:21:29,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:21:29" (1/1) ... [2020-11-30 01:21:29,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2aa2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:29, skipping insertion in model container [2020-11-30 01:21:29,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:21:29" (1/1) ... [2020-11-30 01:21:29,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:21:29,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:21:29,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:21:29,969 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:21:30,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:21:30,055 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:21:30,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30 WrapperNode [2020-11-30 01:21:30,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:21:30,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:21:30,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:21:30,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:21:30,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:21:30,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:21:30,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:21:30,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:21:30,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... [2020-11-30 01:21:30,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:21:30,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:21:30,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:21:30,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:21:30,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 [2020-11-30 01:21:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:21:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:21:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 01:21:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:21:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:21:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:21:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 01:21:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:21:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:21:30,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:21:30,919 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:21:30,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:30 BoogieIcfgContainer [2020-11-30 01:21:30,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:21:30,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:21:30,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:21:30,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:21:30,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:21:29" (1/3) ... [2020-11-30 01:21:30,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7307c4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:21:30, skipping insertion in model container [2020-11-30 01:21:30,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:21:30" (2/3) ... [2020-11-30 01:21:30,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7307c4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:21:30, skipping insertion in model container [2020-11-30 01:21:30,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:30" (3/3) ... [2020-11-30 01:21:30,932 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-30 01:21:30,946 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:21:30,952 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:21:30,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:21:30,996 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:21:30,996 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:21:30,996 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:21:30,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:21:30,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:21:30,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:21:30,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:21:30,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:21:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 01:21:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:21:31,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:21:31,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:21:31,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:21:31,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-11-30 01:21:31,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:21:31,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384629489] [2020-11-30 01:21:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 [2020-11-30 01:21:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:31,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:21:31,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:21:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:31,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:21:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:31,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384629489] [2020-11-30 01:21:31,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:21:31,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:21:31,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507988225] [2020-11-30 01:21:31,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:21:31,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:21:31,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:21:31,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:21:31,344 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 01:21:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:21:31,374 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-30 01:21:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:21:31,375 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 01:21:31,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:21:31,393 INFO L225 Difference]: With dead ends: 41 [2020-11-30 01:21:31,394 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 01:21:31,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:21:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 01:21:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:21:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:21:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-30 01:21:31,437 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-11-30 01:21:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:21:31,438 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-30 01:21:31,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:21:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-30 01:21:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:21:31,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:21:31,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:21:31,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:21:31,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:21:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:31,660 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-11-30 01:21:31,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:21:31,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884914464] [2020-11-30 01:21:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 [2020-11-30 01:21:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:31,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:21:31,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:21:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:31,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:21:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:32,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884914464] [2020-11-30 01:21:32,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:21:32,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2020-11-30 01:21:32,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510572155] [2020-11-30 01:21:32,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:21:32,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:21:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:21:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:21:32,007 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-30 01:21:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:21:32,260 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-30 01:21:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:21:32,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 01:21:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:21:32,265 INFO L225 Difference]: With dead ends: 29 [2020-11-30 01:21:32,266 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 01:21:32,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:21:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 01:21:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-11-30 01:21:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:21:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-30 01:21:32,283 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2020-11-30 01:21:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:21:32,283 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-30 01:21:32,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:21:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-30 01:21:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:21:32,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:21:32,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:21:32,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:21:32,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:21:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:32,507 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2020-11-30 01:21:32,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:21:32,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202044837] [2020-11-30 01:21:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 [2020-11-30 01:21:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:32,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:21:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:21:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:32,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:21:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:32,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202044837] [2020-11-30 01:21:32,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:21:32,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 01:21:32,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515822413] [2020-11-30 01:21:32,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:21:32,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:21:32,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:21:32,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:21:32,888 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-11-30 01:21:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:21:33,304 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-30 01:21:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:21:33,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-30 01:21:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:21:33,306 INFO L225 Difference]: With dead ends: 24 [2020-11-30 01:21:33,306 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 01:21:33,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:21:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 01:21:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 01:21:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 01:21:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-30 01:21:33,315 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-11-30 01:21:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:21:33,315 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-30 01:21:33,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:21:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-30 01:21:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:21:33,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:21:33,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:21:33,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:21:33,517 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:21:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:21:33,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2020-11-30 01:21:33,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:21:33,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103430363] [2020-11-30 01:21:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/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 [2020-11-30 01:21:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:21:33,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:21:33,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:21:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:33,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:21:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:21:33,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103430363] [2020-11-30 01:21:33,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:21:33,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 01:21:33,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974020695] [2020-11-30 01:21:33,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:21:33,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:21:33,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:21:33,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:21:33,950 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-11-30 01:21:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:21:34,112 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-30 01:21:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:21:34,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-30 01:21:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:21:34,113 INFO L225 Difference]: With dead ends: 17 [2020-11-30 01:21:34,113 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:21:34,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:21:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:21:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:21:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:21:34,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:21:34,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-30 01:21:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:21:34,115 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:21:34,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:21:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:21:34,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:21:34,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:21:34,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:21:34,470 INFO L274 CegarLoopResult]: For program point L23(lines 23 41) no Hoare annotation was computed. [2020-11-30 01:21:34,470 INFO L274 CegarLoopResult]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2020-11-30 01:21:34,470 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:21:34,470 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-11-30 01:21:34,470 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point L24(lines 24 37) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 01:21:34,471 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-30 01:21:34,472 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:21:34,472 INFO L274 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2020-11-30 01:21:34,472 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-11-30 01:21:34,472 INFO L270 CegarLoopResult]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-11-30 01:21:34,472 INFO L277 CegarLoopResult]: At program point L63(lines 48 64) the Hoare annotation is: true [2020-11-30 01:21:34,472 INFO L274 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-11-30 01:21:34,472 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-11-30 01:21:34,472 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-30 01:21:34,479 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-30 01:21:34,485 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-30 01:21:34,487 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-30 01:21:34,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-30 01:21:34,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:21:34 BoogieIcfgContainer [2020-11-30 01:21:34,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:21:34,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:21:34,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:21:34,492 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:21:34,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:21:30" (3/4) ... [2020-11-30 01:21:34,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:21:34,509 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 01:21:34,509 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:21:34,510 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 01:21:34,510 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:21:34,540 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) [2020-11-30 01:21:34,541 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2020-11-30 01:21:34,563 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a3bb1e62-a486-4a8d-a236-599e28c9f994/bin/uautomizer/witness.graphml [2020-11-30 01:21:34,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:21:34,566 INFO L168 Benchmark]: Toolchain (without parser) took 4911.00 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 43.7 MB in the beginning and 53.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:34,567 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:21:34,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.06 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 32.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:34,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.28 ms. Allocated memory is still 62.9 MB. Free memory was 32.9 MB in the beginning and 46.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:34,569 INFO L168 Benchmark]: Boogie Preprocessor took 75.73 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 44.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:21:34,570 INFO L168 Benchmark]: RCFGBuilder took 668.30 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 44.7 MB in the beginning and 60.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:34,570 INFO L168 Benchmark]: TraceAbstraction took 3568.17 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 56.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:34,571 INFO L168 Benchmark]: Witness Printer took 72.11 ms. Allocated memory is still 77.6 MB. Free memory was 56.6 MB in the beginning and 53.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:21:34,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.06 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 32.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 117.28 ms. Allocated memory is still 62.9 MB. Free memory was 32.9 MB in the beginning and 46.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.73 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 44.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 668.30 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 44.7 MB in the beginning and 60.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3568.17 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 56.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Witness Printer took 72.11 ms. Allocated memory is still 77.6 MB. Free memory was 56.6 MB in the beginning and 53.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2020-11-30 01:21:34,584 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-30 01:21:34,585 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2020-11-30 01:21:34,586 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-30 01:21:34,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 48 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3257 SizeOfPredicates, 21 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 correct! Received shutdown request...