./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e37ba74c70ee452f780b10cba83059c905066e35 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e37ba74c70ee452f780b10cba83059c905066e35 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-cbb939d [2020-11-23 16:33:59,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:33:59,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:33:59,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:33:59,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:33:59,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:33:59,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:33:59,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:33:59,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:34:00,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:34:00,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:34:00,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:34:00,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:34:00,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:34:00,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:34:00,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:34:00,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:34:00,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:34:00,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:34:00,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:34:00,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:34:00,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:34:00,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:34:00,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:34:00,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:34:00,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:34:00,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:34:00,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:34:00,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:34:00,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:34:00,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:34:00,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:34:00,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:34:00,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:34:00,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:34:00,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:34:00,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:34:00,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:34:00,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:34:00,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:34:00,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:34:00,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 16:34:00,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:34:00,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:34:00,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:34:00,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:34:00,118 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:34:00,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:34:00,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:34:00,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 16:34:00,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:34:00,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:34:00,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:34:00,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:34:00,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:34:00,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:34:00,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:34:00,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:34:00,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:34:00,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:34:00,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:34:00,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:34:00,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:34:00,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:34:00,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:34:00,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:34:00,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:34:00,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 16:34:00,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 16:34:00,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:34:00,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:34:00,124 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37ba74c70ee452f780b10cba83059c905066e35 [2020-11-23 16:34:00,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:34:00,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:34:00,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:34:00,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:34:00,528 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:34:00,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-11-23 16:34:00,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714d130ec/7e5a47b3889747ceb664ca2cc167befd/FLAG8937c0b4c [2020-11-23 16:34:01,351 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:34:01,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-11-23 16:34:01,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714d130ec/7e5a47b3889747ceb664ca2cc167befd/FLAG8937c0b4c [2020-11-23 16:34:01,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714d130ec/7e5a47b3889747ceb664ca2cc167befd [2020-11-23 16:34:01,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:34:01,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:34:01,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:34:01,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:34:01,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:34:01,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23902c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01, skipping insertion in model container [2020-11-23 16:34:01,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:34:01,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:34:01,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:34:01,706 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:34:01,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:34:01,778 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:34:01,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01 WrapperNode [2020-11-23 16:34:01,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:34:01,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:34:01,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:34:01,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:34:01,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:34:01,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:34:01,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:34:01,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:34:01,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... [2020-11-23 16:34:01,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:34:01,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:34:01,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:34:01,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:34:01,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:34:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 16:34:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:34:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-23 16:34:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-23 16:34:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-23 16:34:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:34:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:34:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-23 16:34:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-23 16:34:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:34:02,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:34:02,567 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-23 16:34:02,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:34:02 BoogieIcfgContainer [2020-11-23 16:34:02,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:34:02,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:34:02,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:34:02,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:34:02,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:34:01" (1/3) ... [2020-11-23 16:34:02,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0cd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:34:02, skipping insertion in model container [2020-11-23 16:34:02,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:01" (2/3) ... [2020-11-23 16:34:02,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0cd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:34:02, skipping insertion in model container [2020-11-23 16:34:02,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:34:02" (3/3) ... [2020-11-23 16:34:02,579 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2020-11-23 16:34:02,596 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:34:02,600 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:34:02,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:34:02,642 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:34:02,643 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:34:02,643 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:34:02,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:34:02,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:34:02,643 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:34:02,644 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:34:02,644 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:34:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-23 16:34:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-23 16:34:02,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:34:02,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:34:02,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:34:02,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:34:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-11-23 16:34:02,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:34:02,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783419047] [2020-11-23 16:34:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:34:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:34:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:34:02,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783419047] [2020-11-23 16:34:02,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:34:02,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-23 16:34:02,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234960975] [2020-11-23 16:34:02,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:34:02,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 16:34:02,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:34:02,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:34:02,867 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-11-23 16:34:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:34:02,893 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-11-23 16:34:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:34:02,895 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-23 16:34:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:34:02,906 INFO L225 Difference]: With dead ends: 109 [2020-11-23 16:34:02,906 INFO L226 Difference]: Without dead ends: 52 [2020-11-23 16:34:02,910 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 [2020-11-23 16:34:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-23 16:34:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-23 16:34:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-23 16:34:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-11-23 16:34:02,950 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-11-23 16:34:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:34:02,951 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-11-23 16:34:02,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:34:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-11-23 16:34:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 16:34:02,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:34:02,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:34:02,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 16:34:02,953 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:34:02,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:34:02,954 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-11-23 16:34:02,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:34:02,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828211706] [2020-11-23 16:34:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:34:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:34:03,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:34:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:34:03,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:34:03,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 16:34:03,190 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:34:03,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 16:34:03,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:34:03 BoogieIcfgContainer [2020-11-23 16:34:03,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:34:03,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:34:03,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:34:03,228 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:34:03,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:34:02" (3/4) ... [2020-11-23 16:34:03,233 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:34:03,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:34:03,235 INFO L168 Benchmark]: Toolchain (without parser) took 1844.86 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.6 MB in the beginning and 24.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:34:03,236 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:34:03,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.97 ms. Allocated memory is still 50.3 MB. Free memory was 25.9 MB in the beginning and 26.0 MB in the end (delta: -146.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:34:03,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.74 ms. Allocated memory is still 50.3 MB. Free memory was 26.0 MB in the beginning and 23.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:34:03,239 INFO L168 Benchmark]: Boogie Preprocessor took 62.16 ms. Allocated memory is still 50.3 MB. Free memory was 23.6 MB in the beginning and 32.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-23 16:34:03,240 INFO L168 Benchmark]: RCFGBuilder took 667.94 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.5 MB in the beginning and 35.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-23 16:34:03,241 INFO L168 Benchmark]: TraceAbstraction took 656.25 ms. Allocated memory is still 60.8 MB. Free memory was 34.5 MB in the beginning and 24.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-11-23 16:34:03,242 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 60.8 MB. Free memory is still 24.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:34:03,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.97 ms. Allocated memory is still 50.3 MB. Free memory was 25.9 MB in the beginning and 26.0 MB in the end (delta: -146.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.74 ms. Allocated memory is still 50.3 MB. Free memory was 26.0 MB in the beginning and 23.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.16 ms. Allocated memory is still 50.3 MB. Free memory was 23.6 MB in the beginning and 32.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 667.94 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.5 MB in the beginning and 35.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 656.25 ms. Allocated memory is still 60.8 MB. Free memory was 34.5 MB in the beginning and 24.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.03 ms. Allocated memory is still 60.8 MB. Free memory is still 24.1 MB. 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 bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L174] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L177] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1122b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-cbb939d [2020-11-23 16:34:05,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:34:05,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:34:05,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:34:05,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:34:05,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:34:05,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:34:05,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:34:05,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:34:05,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:34:05,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:34:05,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:34:05,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:34:05,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:34:05,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:34:05,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:34:05,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:34:05,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:34:05,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:34:05,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:34:05,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:34:05,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:34:05,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:34:05,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:34:05,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:34:05,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:34:05,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:34:05,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:34:05,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:34:05,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:34:05,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:34:05,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:34:05,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:34:05,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:34:05,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:34:05,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:34:05,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:34:05,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:34:05,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:34:05,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:34:05,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:34:05,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 16:34:05,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:34:05,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:34:05,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:34:05,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:34:05,875 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:34:05,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:34:05,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:34:05,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:34:05,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:34:05,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:34:05,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:34:05,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:34:05,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 16:34:05,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 16:34:05,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:34:05,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:34:05,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:34:05,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:34:05,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:34:05,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:34:05,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:34:05,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:34:05,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:34:05,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:34:05,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:34:05,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:34:05,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 16:34:05,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 16:34:05,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:34:05,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:34:05,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 16:34:05,880 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37ba74c70ee452f780b10cba83059c905066e35 [2020-11-23 16:34:06,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:34:06,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:34:06,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:34:06,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:34:06,324 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:34:06,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-11-23 16:34:06,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aaae6b3a/84c0b5bd78f146d084144347d2fd6bcc/FLAGdfa97f290 [2020-11-23 16:34:06,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:34:06,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-11-23 16:34:06,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aaae6b3a/84c0b5bd78f146d084144347d2fd6bcc/FLAGdfa97f290 [2020-11-23 16:34:07,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aaae6b3a/84c0b5bd78f146d084144347d2fd6bcc [2020-11-23 16:34:07,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:34:07,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:34:07,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:34:07,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:34:07,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:34:07,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:07,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9d34fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07, skipping insertion in model container [2020-11-23 16:34:07,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:07,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:34:07,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:34:07,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:34:07,764 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:34:07,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:34:07,908 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:34:07,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07 WrapperNode [2020-11-23 16:34:07,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:34:07,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:34:07,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:34:07,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:34:07,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:07,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:34:08,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:34:08,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:34:08,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:34:08,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... [2020-11-23 16:34:08,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:34:08,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:34:08,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:34:08,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:34:08,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:34:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-23 16:34:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-23 16:34:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 16:34:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:34:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-23 16:34:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-23 16:34:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:34:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:34:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-23 16:34:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:34:12,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:34:12,126 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-23 16:34:12,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:34:12 BoogieIcfgContainer [2020-11-23 16:34:12,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:34:12,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:34:12,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:34:12,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:34:12,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:34:07" (1/3) ... [2020-11-23 16:34:12,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f165bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:34:12, skipping insertion in model container [2020-11-23 16:34:12,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:34:07" (2/3) ... [2020-11-23 16:34:12,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f165bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:34:12, skipping insertion in model container [2020-11-23 16:34:12,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:34:12" (3/3) ... [2020-11-23 16:34:12,140 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2020-11-23 16:34:12,156 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:34:12,161 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:34:12,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:34:12,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:34:12,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:34:12,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:34:12,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:34:12,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:34:12,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:34:12,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:34:12,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:34:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-23 16:34:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-23 16:34:12,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:34:12,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:34:12,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:34:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:34:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-11-23 16:34:12,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:34:12,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740140017] [2020-11-23 16:34:12,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:34:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:34:13,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-23 16:34:13,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:34:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:34:13,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:34:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:34:13,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740140017] [2020-11-23 16:34:13,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:34:13,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-23 16:34:13,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536485454] [2020-11-23 16:34:13,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:34:13,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:34:13,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:34:13,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:34:13,541 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-11-23 16:34:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:34:13,565 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-11-23 16:34:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:34:13,566 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-23 16:34:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:34:13,576 INFO L225 Difference]: With dead ends: 109 [2020-11-23 16:34:13,576 INFO L226 Difference]: Without dead ends: 52 [2020-11-23 16:34:13,579 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 [2020-11-23 16:34:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-23 16:34:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-23 16:34:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-23 16:34:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-11-23 16:34:13,613 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-11-23 16:34:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:34:13,614 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-11-23 16:34:13,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:34:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-11-23 16:34:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 16:34:13,615 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:34:13,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:34:13,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 16:34:13,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:34:13,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:34:13,825 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-11-23 16:34:13,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:34:13,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818329727] [2020-11-23 16:34:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:34:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:34:14,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-23 16:34:14,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:34:24,864 WARN L194 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 12 [2020-11-23 16:34:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:34:32,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:34:46,276 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-23 16:34:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:34:48,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818329727] [2020-11-23 16:34:48,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:34:48,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-23 16:34:48,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288798882] [2020-11-23 16:34:48,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-23 16:34:48,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:34:48,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-23 16:34:48,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2020-11-23 16:34:48,250 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-11-23 16:34:53,329 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (_ +zero 11 53)))) is different from true [2020-11-23 16:35:10,340 WARN L194 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 18 DAG size of output: 7 [2020-11-23 16:35:12,749 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (_ +zero 11 53)) ULTIMATE.start_fmod_double_~y))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) (not (fp.eq |c_ULTIMATE.start_fmod_double_#res| |c_ULTIMATE.start_fmod_double_#res|)) (= (_ bv1 32) |c_ULTIMATE.start_main_#t~ret25|) (= (_ bv1 32) |c_ULTIMATE.start_isnan_double_#res|)) is different from false [2020-11-23 16:35:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:35:24,055 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-11-23 16:35:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-23 16:35:24,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-11-23 16:35:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:35:24,101 INFO L225 Difference]: With dead ends: 57 [2020-11-23 16:35:24,101 INFO L226 Difference]: Without dead ends: 52 [2020-11-23 16:35:24,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=34, Invalid=82, Unknown=6, NotChecked=60, Total=182 [2020-11-23 16:35:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-23 16:35:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-23 16:35:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-23 16:35:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-11-23 16:35:24,110 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-11-23 16:35:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:35:24,110 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-11-23 16:35:24,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-23 16:35:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-11-23 16:35:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:35:24,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:35:24,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:35:24,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:35:24,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:35:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:35:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-11-23 16:35:24,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:35:24,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475305314] [2020-11-23 16:35:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:35:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:35:24,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-23 16:35:24,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:35:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:35:24,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:35:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:35:24,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475305314] [2020-11-23 16:35:24,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:35:24,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-23 16:35:24,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184073289] [2020-11-23 16:35:24,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-23 16:35:24,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:35:24,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-23 16:35:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-23 16:35:24,869 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand 8 states. [2020-11-23 16:35:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:35:25,100 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2020-11-23 16:35:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-23 16:35:25,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-23 16:35:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:35:25,101 INFO L225 Difference]: With dead ends: 52 [2020-11-23 16:35:25,101 INFO L226 Difference]: Without dead ends: 0 [2020-11-23 16:35:25,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-23 16:35:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-23 16:35:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-23 16:35:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-23 16:35:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-23 16:35:25,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-23 16:35:25,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:35:25,103 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-23 16:35:25,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-23 16:35:25,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-23 16:35:25,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-23 16:35:25,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-23 16:35:25,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-23 16:35:30,281 WARN L194 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2020-11-23 16:35:30,302 INFO L262 CegarLoopResult]: For program point L35-2(lines 35 40) no Hoare annotation was computed. [2020-11-23 16:35:30,302 INFO L258 CegarLoopResult]: At program point L68-3(lines 68 69) the Hoare annotation is: false [2020-11-23 16:35:30,302 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-23 16:35:30,302 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point L136-1(lines 136 141) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point L103-1(lines 103 117) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L258 CegarLoopResult]: At program point L136-2(lines 136 141) the Hoare annotation is: false [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point L103-3(lines 103 117) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point L120(lines 120 121) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point L120-2(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L262 CegarLoopResult]: For program point L71-2(lines 71 72) no Hoare annotation was computed. [2020-11-23 16:35:30,303 INFO L258 CegarLoopResult]: At program point L71-3(lines 71 72) the Hoare annotation is: false [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L154(lines 154 159) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L154-1(lines 142 161) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L154-2(lines 154 159) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L55(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L122-1(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L56(lines 56 62) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L106(lines 106 107) no Hoare annotation was computed. [2020-11-23 16:35:30,304 INFO L262 CegarLoopResult]: For program point L106-2(lines 103 117) no Hoare annotation was computed. [2020-11-23 16:35:30,305 INFO L262 CegarLoopResult]: For program point L57-2(lines 57 58) no Hoare annotation was computed. [2020-11-23 16:35:30,305 INFO L258 CegarLoopResult]: At program point L57-3(lines 57 58) the Hoare annotation is: false [2020-11-23 16:35:30,305 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-23 16:35:30,305 INFO L258 CegarLoopResult]: At program point L108-1(lines 103 117) the Hoare annotation is: false [2020-11-23 16:35:30,305 INFO L262 CegarLoopResult]: For program point L93(lines 93 99) no Hoare annotation was computed. [2020-11-23 16:35:30,305 INFO L262 CegarLoopResult]: For program point L93-2(lines 89 100) no Hoare annotation was computed. [2020-11-23 16:35:30,305 INFO L262 CegarLoopResult]: For program point L60-2(lines 60 61) no Hoare annotation was computed. [2020-11-23 16:35:30,305 INFO L258 CegarLoopResult]: At program point L60-3(lines 60 61) the Hoare annotation is: false [2020-11-23 16:35:30,306 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-23 16:35:30,306 INFO L262 CegarLoopResult]: For program point L177(lines 177 180) no Hoare annotation was computed. [2020-11-23 16:35:30,306 INFO L262 CegarLoopResult]: For program point L144(lines 144 153) no Hoare annotation was computed. [2020-11-23 16:35:30,306 INFO L262 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-11-23 16:35:30,306 INFO L262 CegarLoopResult]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2020-11-23 16:35:30,306 INFO L258 CegarLoopResult]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_fmod_double_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53)))) [2020-11-23 16:35:30,306 INFO L262 CegarLoopResult]: For program point L112(lines 112 113) no Hoare annotation was computed. [2020-11-23 16:35:30,306 INFO L258 CegarLoopResult]: At program point L162(lines 25 163) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_double_#res| |ULTIMATE.start_fmod_double_#res|)) [2020-11-23 16:35:30,307 INFO L258 CegarLoopResult]: At program point L129-2(lines 129 133) the Hoare annotation is: false [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L129-3(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L147(lines 147 153) no Hoare annotation was computed. [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L81(lines 81 87) no Hoare annotation was computed. [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L48(lines 48 53) no Hoare annotation was computed. [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L81-2(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L48-2(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,307 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-23 16:35:30,308 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-23 16:35:30,308 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-23 16:35:30,308 INFO L262 CegarLoopResult]: For program point L66(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,308 INFO L265 CegarLoopResult]: At program point L182(lines 165 183) the Hoare annotation is: true [2020-11-23 16:35:30,308 INFO L262 CegarLoopResult]: For program point L67(lines 67 73) no Hoare annotation was computed. [2020-11-23 16:35:30,308 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-11-23 16:35:30,308 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_double_#res| |ULTIMATE.start_fmod_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-23 16:35:30,308 INFO L262 CegarLoopResult]: For program point L134(lines 134 161) no Hoare annotation was computed. [2020-11-23 16:35:30,309 INFO L262 CegarLoopResult]: For program point L35(lines 35 40) no Hoare annotation was computed. [2020-11-23 16:35:30,309 INFO L262 CegarLoopResult]: For program point L35-1(lines 25 163) no Hoare annotation was computed. [2020-11-23 16:35:30,309 INFO L262 CegarLoopResult]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2020-11-23 16:35:30,320 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-23 16:35:30,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,329 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-23 16:35:30,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:35:30 BoogieIcfgContainer [2020-11-23 16:35:30,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:35:30,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:35:30,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:35:30,337 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:35:30,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:34:12" (3/4) ... [2020-11-23 16:35:30,341 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-23 16:35:30,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-23 16:35:30,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-23 16:35:30,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-23 16:35:30,357 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-23 16:35:30,401 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-23 16:35:30,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:35:30,403 INFO L168 Benchmark]: Toolchain (without parser) took 83035.21 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.7 MB in the beginning and 41.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 650.0 kB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,403 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 48.2 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:35:30,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.1 MB in the beginning and 23.2 MB in the end (delta: 881.4 kB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.26 ms. Allocated memory is still 48.2 MB. Free memory was 23.2 MB in the beginning and 20.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,406 INFO L168 Benchmark]: Boogie Preprocessor took 61.61 ms. Allocated memory is still 48.2 MB. Free memory was 20.9 MB in the beginning and 30.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,406 INFO L168 Benchmark]: RCFGBuilder took 4051.11 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 30.2 MB in the beginning and 40.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,407 INFO L168 Benchmark]: TraceAbstraction took 78202.69 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 43.9 MB in the end (delta: -4.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,408 INFO L168 Benchmark]: Witness Printer took 65.03 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 41.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:35:30,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 48.2 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 532.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.1 MB in the beginning and 23.2 MB in the end (delta: 881.4 kB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.26 ms. Allocated memory is still 48.2 MB. Free memory was 23.2 MB in the beginning and 20.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.61 ms. Allocated memory is still 48.2 MB. Free memory was 20.9 MB in the beginning and 30.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4051.11 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 30.2 MB in the beginning and 40.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 78202.69 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 43.9 MB in the end (delta: -4.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * Witness Printer took 65.03 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 41.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * 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: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant [2020-11-23 16:35:30,422 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-23 16:35:30,422 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,423 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-23 16:35:30,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-23 16:35:30,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(\result, \result) && 1bv32 == \result - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 73.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 159 SDtfs, 8 SDslu, 342 SDs, 0 SdLazy, 29 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 54.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 33.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 14 QuantifiedInterpolants, 5495 SizeOfPredicates, 19 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...