./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.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_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 858612fdb9071600e83746a6e504d4acbbe533c1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 858612fdb9071600e83746a6e504d4acbbe533c1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:37,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:37,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:37,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:37,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:37,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:37,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:37,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:37,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:37,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:37,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:37,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:37,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:37,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:37,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:37,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:37,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:37,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:37,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:37,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:37,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:37,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:37,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:37,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:37,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:37,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:37,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:37,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:37,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:37,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:37,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:37,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:37,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:37,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:37,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:37,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:37,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:37,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:37,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:37,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:37,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:37,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:37,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:37,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:37,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:37,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:37,915 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:37,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:37,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:37,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:37,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:37,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:37,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:37,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:37,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:37,920 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:37,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:37,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:37,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:37,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:37,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:37,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:37,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:37,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:37,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:37,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:37,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:37,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:37,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:37,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:37,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:37,923 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_cd9b040c-dfae-4331-a8af-dd93bb53818c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-28 02:58:38,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:38,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:38,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:38,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:38,315 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:38,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-28 02:58:38,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/98ff88247/b52d534d941f4f6689626fb964c88516/FLAG8d8f2b338 [2020-11-28 02:58:39,037 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:39,040 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-28 02:58:39,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/98ff88247/b52d534d941f4f6689626fb964c88516/FLAG8d8f2b338 [2020-11-28 02:58:39,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/98ff88247/b52d534d941f4f6689626fb964c88516 [2020-11-28 02:58:39,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:39,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:39,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:39,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:39,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:39,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7fb538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39, skipping insertion in model container [2020-11-28 02:58:39,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:39,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:39,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:39,693 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:39,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:39,768 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:39,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39 WrapperNode [2020-11-28 02:58:39,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:39,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:39,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:39,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:39,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:39,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:39,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:39,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:39,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... [2020-11-28 02:58:39,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:39,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:39,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:39,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:39,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 [2020-11-28 02:58:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 02:58:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:39,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:40,667 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:40,667 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 02:58:40,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:40 BoogieIcfgContainer [2020-11-28 02:58:40,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:40,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:40,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:40,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:40,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:39" (1/3) ... [2020-11-28 02:58:40,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261ca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:40, skipping insertion in model container [2020-11-28 02:58:40,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:39" (2/3) ... [2020-11-28 02:58:40,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261ca2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:40, skipping insertion in model container [2020-11-28 02:58:40,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:40" (3/3) ... [2020-11-28 02:58:40,680 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-28 02:58:40,693 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:40,697 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:40,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:58:40,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:40,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:40,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:40,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:40,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:40,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:40,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:40,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 02:58:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:40,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:40,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:40,776 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-28 02:58:40,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:40,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83292817] [2020-11-28 02:58:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:40,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83292817] [2020-11-28 02:58:40,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:40,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:40,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798872074] [2020-11-28 02:58:40,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:40,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:40,955 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 02:58:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:40,976 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-28 02:58:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:40,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 02:58:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:40,988 INFO L225 Difference]: With dead ends: 55 [2020-11-28 02:58:40,989 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 02:58:41,019 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 [2020-11-28 02:58:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 02:58:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 02:58:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:58:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-28 02:58:41,057 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-28 02:58:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,057 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-28 02:58:41,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 02:58:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:41,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:41,059 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-28 02:58:41,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783496993] [2020-11-28 02:58:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783496993] [2020-11-28 02:58:41,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:41,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641417774] [2020-11-28 02:58:41,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:41,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:41,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,203 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-28 02:58:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,291 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-28 02:58:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:41,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:58:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,293 INFO L225 Difference]: With dead ends: 41 [2020-11-28 02:58:41,293 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:58:41,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:58:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-28 02:58:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 02:58:41,301 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-28 02:58:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,302 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 02:58:41,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 02:58:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:58:41,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:41,303 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,304 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-28 02:58:41,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578784107] [2020-11-28 02:58:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578784107] [2020-11-28 02:58:41,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:41,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611300635] [2020-11-28 02:58:41,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:41,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:41,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,411 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-28 02:58:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,511 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-28 02:58:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:41,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:58:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,514 INFO L225 Difference]: With dead ends: 43 [2020-11-28 02:58:41,514 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:58:41,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:58:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 02:58:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 02:58:41,521 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-28 02:58:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,521 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 02:58:41,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 02:58:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:58:41,522 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:41,523 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-28 02:58:41,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297703264] [2020-11-28 02:58:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297703264] [2020-11-28 02:58:41,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:41,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415503009] [2020-11-28 02:58:41,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:41,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:41,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,639 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-28 02:58:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,760 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-28 02:58:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:41,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:58:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,765 INFO L225 Difference]: With dead ends: 45 [2020-11-28 02:58:41,765 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 02:58:41,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 02:58:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-28 02:58:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 02:58:41,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-28 02:58:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,772 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 02:58:41,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 02:58:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:41,773 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:41,774 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-28 02:58:41,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670874012] [2020-11-28 02:58:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670874012] [2020-11-28 02:58:41,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:41,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330559900] [2020-11-28 02:58:41,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:41,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:41,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,873 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-28 02:58:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,969 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-28 02:58:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:41,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 02:58:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,971 INFO L225 Difference]: With dead ends: 43 [2020-11-28 02:58:41,971 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:58:41,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:58:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 02:58:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 02:58:41,978 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-28 02:58:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,978 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 02:58:41,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 02:58:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:41,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:41,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-28 02:58:41,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493578469] [2020-11-28 02:58:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:42,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:42,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:42,123 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:42,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:42,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:42,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:42 BoogieIcfgContainer [2020-11-28 02:58:42,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:42,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:42,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:42,192 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:42,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:40" (3/4) ... [2020-11-28 02:58:42,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:58:42,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:42,203 INFO L168 Benchmark]: Toolchain (without parser) took 2819.24 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 58.1 MB in the beginning and 83.8 MB in the end (delta: -25.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,205 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:42,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.09 ms. Allocated memory is still 88.1 MB. Free memory was 57.9 MB in the beginning and 66.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 88.1 MB. Free memory was 66.3 MB in the beginning and 64.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,216 INFO L168 Benchmark]: Boogie Preprocessor took 70.62 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 63.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,217 INFO L168 Benchmark]: RCFGBuilder took 767.34 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 44.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,218 INFO L168 Benchmark]: TraceAbstraction took 1510.11 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 43.7 MB in the beginning and 84.4 MB in the end (delta: -40.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:42,221 INFO L168 Benchmark]: Witness Printer took 7.08 ms. Allocated memory is still 121.6 MB. Free memory was 84.4 MB in the beginning and 83.8 MB in the end (delta: 636.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:42,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.09 ms. Allocated memory is still 88.1 MB. Free memory was 57.9 MB in the beginning and 66.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 88.1 MB. Free memory was 66.3 MB in the beginning and 64.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.62 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 63.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 767.34 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 44.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1510.11 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 43.7 MB in the beginning and 84.4 MB in the end (delta: -40.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.08 ms. Allocated memory is still 121.6 MB. Free memory was 84.4 MB in the beginning and 83.8 MB in the end (delta: 636.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1230.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2020-11-28 02:58:45,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:45,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:45,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:45,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:45,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:45,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:45,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:45,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:45,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:45,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:45,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:45,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:45,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:45,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:45,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:45,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:45,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:45,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:45,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:45,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:45,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:45,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:45,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:45,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:45,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:45,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:45,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:45,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:45,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:45,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:45,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:45,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:45,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:45,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:45,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:45,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:45,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:45,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:45,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:45,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:45,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 02:58:45,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:45,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:45,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:45,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:45,387 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:45,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:45,388 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:45,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:45,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:45,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:45,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:45,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:45,390 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 02:58:45,391 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 02:58:45,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:45,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:45,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:45,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:45,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:45,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:45,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:45,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:45,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:45,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:45,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:45,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:45,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 02:58:45,395 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 02:58:45,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:45,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:45,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 02:58:45,396 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_cd9b040c-dfae-4331-a8af-dd93bb53818c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-28 02:58:45,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:45,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:45,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:45,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:45,983 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:45,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-28 02:58:46,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/ebb28e35a/8cee1eef8231454a9ce6a46a865200f2/FLAGb0177fa8c [2020-11-28 02:58:46,781 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:46,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-28 02:58:46,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/ebb28e35a/8cee1eef8231454a9ce6a46a865200f2/FLAGb0177fa8c [2020-11-28 02:58:47,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/data/ebb28e35a/8cee1eef8231454a9ce6a46a865200f2 [2020-11-28 02:58:47,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:47,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:47,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:47,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:47,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:47,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce2dd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47, skipping insertion in model container [2020-11-28 02:58:47,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:47,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:47,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:47,486 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:47,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:47,567 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:47,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47 WrapperNode [2020-11-28 02:58:47,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:47,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:47,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:47,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:47,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:47,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:47,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:47,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:47,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... [2020-11-28 02:58:47,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:47,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:47,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:47,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:47,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 [2020-11-28 02:58:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 02:58:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 02:58:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 02:58:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:48,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:48,431 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 02:58:48,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:48 BoogieIcfgContainer [2020-11-28 02:58:48,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:48,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:48,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:48,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:48,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:47" (1/3) ... [2020-11-28 02:58:48,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c380809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:48, skipping insertion in model container [2020-11-28 02:58:48,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:47" (2/3) ... [2020-11-28 02:58:48,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c380809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:48, skipping insertion in model container [2020-11-28 02:58:48,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:48" (3/3) ... [2020-11-28 02:58:48,444 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-28 02:58:48,457 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:48,463 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:48,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:58:48,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:48,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:48,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:48,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:48,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:48,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:48,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:48,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 02:58:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:58:48,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:48,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:48,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:48,537 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-28 02:58:48,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:48,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287947847] [2020-11-28 02:58:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 [2020-11-28 02:58:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 02:58:48,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:48,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:48,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287947847] [2020-11-28 02:58:48,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:48,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 02:58:48,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249557710] [2020-11-28 02:58:48,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:48,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:48,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:48,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:48,757 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 02:58:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:48,785 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-28 02:58:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:48,786 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 02:58:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:48,796 INFO L225 Difference]: With dead ends: 55 [2020-11-28 02:58:48,797 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 02:58:48,800 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 [2020-11-28 02:58:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 02:58:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 02:58:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:58:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-28 02:58:48,837 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-28 02:58:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:48,837 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-28 02:58:48,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 02:58:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:48,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:48,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:49,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 02:58:49,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-28 02:58:49,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:49,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270887569] [2020-11-28 02:58:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 [2020-11-28 02:58:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:58:49,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:49,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:49,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270887569] [2020-11-28 02:58:49,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:49,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 02:58:49,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819994736] [2020-11-28 02:58:49,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:49,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:49,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:49,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:49,307 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-28 02:58:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:49,472 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-28 02:58:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:49,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 02:58:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:49,476 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:58:49,476 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 02:58:49,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 02:58:49,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 02:58:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 02:58:49,495 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-28 02:58:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:49,496 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 02:58:49,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 02:58:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:49,499 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:49,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:49,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 02:58:49,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-28 02:58:49,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:49,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954823604] [2020-11-28 02:58:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 [2020-11-28 02:58:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:49,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:58:49,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:50,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:50,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954823604] [2020-11-28 02:58:50,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:50,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 02:58:50,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983184072] [2020-11-28 02:58:50,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:50,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:50,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:50,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:50,227 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-28 02:58:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:50,763 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-28 02:58:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:50,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 02:58:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:50,765 INFO L225 Difference]: With dead ends: 36 [2020-11-28 02:58:50,765 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 02:58:50,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:58:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 02:58:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-28 02:58:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:58:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-28 02:58:50,785 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-28 02:58:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:50,786 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-28 02:58:50,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-28 02:58:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:58:50,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:50,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:51,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 02:58:51,009 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:51,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-28 02:58:51,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:51,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442966432] [2020-11-28 02:58:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/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 [2020-11-28 02:58:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:51,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:58:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:51,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:51,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442966432] [2020-11-28 02:58:51,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:51,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 02:58:51,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530269709] [2020-11-28 02:58:51,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:51,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:51,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:51,210 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-28 02:58:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:51,408 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-28 02:58:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:51,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 02:58:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:51,411 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:58:51,411 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 02:58:51,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 02:58:51,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 02:58:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 02:58:51,419 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-28 02:58:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:51,419 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 02:58:51,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:51,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-28 02:58:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:51,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:51,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:51,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 02:58:51,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:51,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-28 02:58:51,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:51,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998489574] [2020-11-28 02:58:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:51,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:58:51,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:52,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:52,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998489574] [2020-11-28 02:58:52,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:52,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-28 02:58:52,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405799403] [2020-11-28 02:58:52,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:58:52,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:52,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:58:52,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:52,288 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-28 02:58:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:52,956 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-28 02:58:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:52,957 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-28 02:58:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:52,958 INFO L225 Difference]: With dead ends: 32 [2020-11-28 02:58:52,958 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 02:58:52,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:58:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 02:58:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 02:58:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 02:58:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 02:58:52,963 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-28 02:58:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:52,964 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 02:58:52,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:58:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 02:58:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:52,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:52,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:53,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 02:58:53,176 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:53,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:53,177 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-28 02:58:53,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:53,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010655084] [2020-11-28 02:58:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 02:58:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:53,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:58:53,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:53,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:53,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010655084] [2020-11-28 02:58:53,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:53,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 02:58:53,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766335444] [2020-11-28 02:58:53,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:53,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:53,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:53,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:53,630 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-28 02:58:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:54,032 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-28 02:58:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:54,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-28 02:58:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:54,033 INFO L225 Difference]: With dead ends: 23 [2020-11-28 02:58:54,033 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:54,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:58:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:54,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 02:58:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:54,035 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:54,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:54,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:54,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 02:58:54,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L270 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-11-28 02:58:54,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-11-28 02:58:54,508 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-28 02:58:54,508 INFO L274 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-11-28 02:58:54,509 INFO L270 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-28 02:58:54,509 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-28 02:58:54,509 INFO L274 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-11-28 02:58:54,509 INFO L270 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-28 02:58:54,509 INFO L270 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) .cse0))) [2020-11-28 02:58:54,509 INFO L277 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-11-28 02:58:54,509 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-28 02:58:54,509 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-11-28 02:58:54,509 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-11-28 02:58:54,509 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-11-28 02:58:54,531 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 02:58:54,533 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 02:58:54,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 02:58:54,535 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 02:58:54,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:54 BoogieIcfgContainer [2020-11-28 02:58:54,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:54,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:54,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:54,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:54,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:48" (3/4) ... [2020-11-28 02:58:54,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:54,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 02:58:54,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:58:54,560 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:58:54,560 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:54,595 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) [2020-11-28 02:58:54,596 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) [2020-11-28 02:58:54,597 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) [2020-11-28 02:58:54,654 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cd9b040c-dfae-4331-a8af-dd93bb53818c/bin/uautomizer/witness.graphml [2020-11-28 02:58:54,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:54,657 INFO L168 Benchmark]: Toolchain (without parser) took 7509.86 ms. Allocated memory was 56.6 MB in the beginning and 92.3 MB in the end (delta: 35.7 MB). Free memory was 36.1 MB in the beginning and 65.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,657 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:54,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.96 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 25.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.14 ms. Allocated memory is still 56.6 MB. Free memory was 25.0 MB in the beginning and 40.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,659 INFO L168 Benchmark]: Boogie Preprocessor took 48.82 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,659 INFO L168 Benchmark]: RCFGBuilder took 725.05 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 39.3 MB in the beginning and 53.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,660 INFO L168 Benchmark]: TraceAbstraction took 6101.71 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 53.5 MB in the beginning and 70.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,660 INFO L168 Benchmark]: Witness Printer took 116.02 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 65.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:54,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.96 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 25.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.14 ms. Allocated memory is still 56.6 MB. Free memory was 25.0 MB in the beginning and 40.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.82 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 725.05 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 39.3 MB in the beginning and 53.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6101.71 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 53.5 MB in the beginning and 70.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. * Witness Printer took 116.02 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 65.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 19]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 46]: Loop Invariant [2020-11-28 02:58:54,680 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 02:58:54,680 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 18]: Loop Invariant [2020-11-28 02:58:54,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 02:58:54,693 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...