./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 .......................................................................................................................................................................................................................................................................................................... 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:33:00,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:00,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:01,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:01,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:01,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:01,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:01,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:01,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:01,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:01,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:01,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:01,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:01,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:01,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:01,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:01,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:01,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:01,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:01,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:01,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:01,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:01,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:01,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:01,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:01,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:01,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:01,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:01,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:01,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:01,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:01,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:01,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:01,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:01,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:01,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:01,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:01,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:01,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:01,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:01,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:01,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:33:01,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:01,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:01,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:01,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:01,180 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:01,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:01,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:01,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:33:01,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:01,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:01,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:01,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:01,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:01,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:01,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:01,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:01,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:01,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:01,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:01,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:01,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:01,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:01,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:01,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:01,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:01,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:33:01,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:33:01,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:01,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:01,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-10-20 00:33:01,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:01,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:01,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:01,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:01,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:01,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-20 00:33:01,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11093aca0/97af06c1c8974f6b89e388acd9a80346/FLAGe8918b7b5 [2020-10-20 00:33:02,017 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:02,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-20 00:33:02,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11093aca0/97af06c1c8974f6b89e388acd9a80346/FLAGe8918b7b5 [2020-10-20 00:33:02,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11093aca0/97af06c1c8974f6b89e388acd9a80346 [2020-10-20 00:33:02,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:02,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:02,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:02,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:02,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:02,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:02,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524c29ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02, skipping insertion in model container [2020-10-20 00:33:02,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:02,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:02,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:02,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:02,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:02,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:02,897 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:02,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02 WrapperNode [2020-10-20 00:33:02,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:02,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:02,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:02,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:02,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:02,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:02,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:02,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:02,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:02,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:02,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:02,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:03,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:03,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:03,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:03,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:03,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (1/1) ... [2020-10-20 00:33:03,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:03,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:03,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:03,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:03,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (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 [2020-10-20 00:33:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:33:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:33:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:03,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:33:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:03,782 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:03,782 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:33:03,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:03 BoogieIcfgContainer [2020-10-20 00:33:03,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:03,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:03,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:03,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:03,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:02" (1/3) ... [2020-10-20 00:33:03,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471df432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:03, skipping insertion in model container [2020-10-20 00:33:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:02" (2/3) ... [2020-10-20 00:33:03,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471df432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:03, skipping insertion in model container [2020-10-20 00:33:03,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:03" (3/3) ... [2020-10-20 00:33:03,795 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-20 00:33:03,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:03,813 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:03,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:03,852 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:03,852 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:03,852 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:03,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:03,853 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:03,853 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:03,853 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:03,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-20 00:33:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:33:03,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:03,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:03,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:03,881 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-10-20 00:33:03,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:03,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194938618] [2020-10-20 00:33:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:04,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194938618] [2020-10-20 00:33:04,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:04,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:04,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785896578] [2020-10-20 00:33:04,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:04,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:04,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:04,088 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-10-20 00:33:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:04,116 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-10-20 00:33:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:04,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:33:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:04,130 INFO L225 Difference]: With dead ends: 120 [2020-10-20 00:33:04,131 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 00:33:04,134 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 [2020-10-20 00:33:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 00:33:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-20 00:33:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 00:33:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-10-20 00:33:04,180 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-10-20 00:33:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:04,180 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-10-20 00:33:04,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-10-20 00:33:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:04,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:04,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:04,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:04,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-10-20 00:33:04,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:04,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692224396] [2020-10-20 00:33:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:04,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:04,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:04,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:04,441 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:04,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:04,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:04 BoogieIcfgContainer [2020-10-20 00:33:04,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:04,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:04,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:04,535 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:04,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:03" (3/4) ... [2020-10-20 00:33:04,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:04,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:04,549 INFO L168 Benchmark]: Toolchain (without parser) took 2139.16 ms. Allocated memory was 39.3 MB in the beginning and 47.7 MB in the end (delta: 8.4 MB). Free memory was 16.8 MB in the beginning and 26.8 MB in the end (delta: -10.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:33:04,551 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.26 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.0 MB in the beginning and 11.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.85 ms. Allocated memory is still 40.4 MB. Free memory was 11.9 MB in the beginning and 9.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,556 INFO L168 Benchmark]: Boogie Preprocessor took 72.84 ms. Allocated memory was 40.4 MB in the beginning and 41.9 MB in the end (delta: 1.6 MB). Free memory was 9.0 MB in the beginning and 23.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,557 INFO L168 Benchmark]: RCFGBuilder took 746.25 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 23.3 MB in the beginning and 21.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,559 INFO L168 Benchmark]: TraceAbstraction took 746.90 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 20.8 MB in the beginning and 27.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,561 INFO L168 Benchmark]: Witness Printer took 13.49 ms. Allocated memory is still 47.7 MB. Free memory was 27.2 MB in the beginning and 26.8 MB in the end (delta: 376.4 kB). Peak memory consumption was 376.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:04,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 484.26 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.0 MB in the beginning and 11.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 65.85 ms. Allocated memory is still 40.4 MB. Free memory was 11.9 MB in the beginning and 9.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 72.84 ms. Allocated memory was 40.4 MB in the beginning and 41.9 MB in the end (delta: 1.6 MB). Free memory was 9.0 MB in the beginning and 23.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.2 kB. Max. memory is 14.3 GB. * RCFGBuilder took 746.25 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 23.3 MB in the beginning and 21.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 746.90 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 20.8 MB in the beginning and 27.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * Witness Printer took 13.49 ms. Allocated memory is still 47.7 MB. Free memory was 27.2 MB in the beginning and 26.8 MB in the end (delta: 376.4 kB). Peak memory consumption was 376.4 kB. Max. memory is 14.3 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 bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, 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}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [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}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 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: 89 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=62occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 0.1.25-9a8b2e8 [2020-10-20 00:33:06,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:06,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:06,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:06,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:06,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:06,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:06,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:06,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:06,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:06,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:06,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:06,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:06,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:06,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:06,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:06,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:06,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:06,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:06,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:06,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:06,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:06,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:06,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:06,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:06,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:06,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:06,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:06,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:06,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:06,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:06,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:06,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:06,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:06,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:06,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:06,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:06,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:06,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:06,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:06,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:06,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:06,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:06,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:06,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:06,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:06,974 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:06,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:06,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:06,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:06,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:06,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:06,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:06,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:06,977 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:06,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:06,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:06,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:06,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:06,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:06,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:06,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:06,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:06,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:06,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:06,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:06,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:06,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:06,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:06,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:06,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:06,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:06,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:06,983 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-10-20 00:33:07,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:07,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:07,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:07,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:07,251 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:07,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-20 00:33:07,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97aa1d9f9/41d1a0e05bd1477494543401957e29bb/FLAG16a5d8b46 [2020-10-20 00:33:07,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:07,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-10-20 00:33:07,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97aa1d9f9/41d1a0e05bd1477494543401957e29bb/FLAG16a5d8b46 [2020-10-20 00:33:08,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97aa1d9f9/41d1a0e05bd1477494543401957e29bb [2020-10-20 00:33:08,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:08,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:08,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:08,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:08,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:08,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2619b07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08, skipping insertion in model container [2020-10-20 00:33:08,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:08,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:08,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:08,580 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:08,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:08,667 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:08,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08 WrapperNode [2020-10-20 00:33:08,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:08,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:08,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:08,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:08,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:08,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:08,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:08,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:08,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (1/1) ... [2020-10-20 00:33:08,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:08,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:08,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:08,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:08,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (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 [2020-10-20 00:33:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:33:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:33:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:33:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:12,639 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:12,639 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:33:12,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:12 BoogieIcfgContainer [2020-10-20 00:33:12,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:12,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:12,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:12,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:12,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:08" (1/3) ... [2020-10-20 00:33:12,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fc6ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:12, skipping insertion in model container [2020-10-20 00:33:12,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:08" (2/3) ... [2020-10-20 00:33:12,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fc6ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:12, skipping insertion in model container [2020-10-20 00:33:12,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:12" (3/3) ... [2020-10-20 00:33:12,650 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-20 00:33:12,662 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:12,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:12,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:12,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:12,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:12,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:12,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:12,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:12,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:12,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:12,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-20 00:33:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:33:12,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:12,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:12,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:12,740 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-10-20 00:33:12,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:12,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662741753] [2020-10-20 00:33:12,751 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 [2020-10-20 00:33:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:13,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:13,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:13,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:33:13,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662741753] [2020-10-20 00:33:13,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:13,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:13,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737730428] [2020-10-20 00:33:13,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:13,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:13,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:13,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:13,887 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-10-20 00:33:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:13,910 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-10-20 00:33:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:13,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:33:13,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:13,924 INFO L225 Difference]: With dead ends: 120 [2020-10-20 00:33:13,924 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 00:33:13,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 00:33:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-20 00:33:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 00:33:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-10-20 00:33:13,971 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-10-20 00:33:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:13,972 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-10-20 00:33:13,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-10-20 00:33:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:13,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:13,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:14,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:14,187 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:14,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-10-20 00:33:14,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:14,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445304983] [2020-10-20 00:33:14,191 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 [2020-10-20 00:33:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:15,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:17,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:17,292 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:33:17,293 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:17,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:33:17,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:17 BoogieIcfgContainer [2020-10-20 00:33:17,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:17,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:17,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:17,550 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:17,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:12" (3/4) ... [2020-10-20 00:33:17,552 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:33:17,610 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:33:17,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:17,613 INFO L168 Benchmark]: Toolchain (without parser) took 9442.30 ms. Allocated memory was 36.7 MB in the beginning and 51.4 MB in the end (delta: 14.7 MB). Free memory was 13.5 MB in the beginning and 12.6 MB in the end (delta: 870.4 kB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,614 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 34.1 MB. Free memory was 19.1 MB in the beginning and 19.1 MB in the end (delta: 30.9 kB). Peak memory consumption was 30.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.50 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 12.7 MB in the beginning and 18.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.23 ms. Allocated memory is still 44.6 MB. Free memory was 18.4 MB in the beginning and 15.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,616 INFO L168 Benchmark]: Boogie Preprocessor took 83.77 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 15.9 MB in the beginning and 25.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,617 INFO L168 Benchmark]: RCFGBuilder took 3815.95 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 25.7 MB in the beginning and 24.8 MB in the end (delta: 885.3 kB). Peak memory consumption was 17.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,618 INFO L168 Benchmark]: TraceAbstraction took 4906.28 ms. Allocated memory was 48.2 MB in the beginning and 51.4 MB in the end (delta: 3.1 MB). Free memory was 24.5 MB in the beginning and 15.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,618 INFO L168 Benchmark]: Witness Printer took 60.95 ms. Allocated memory is still 51.4 MB. Free memory was 15.8 MB in the beginning and 12.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:17,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 34.1 MB. Free memory was 19.1 MB in the beginning and 19.1 MB in the end (delta: 30.9 kB). Peak memory consumption was 30.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 492.50 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 12.7 MB in the beginning and 18.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 72.23 ms. Allocated memory is still 44.6 MB. Free memory was 18.4 MB in the beginning and 15.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 83.77 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 15.9 MB in the beginning and 25.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3815.95 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 25.7 MB in the beginning and 24.8 MB in the end (delta: 885.3 kB). Peak memory consumption was 17.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4906.28 ms. Allocated memory was 48.2 MB in the beginning and 51.4 MB in the end (delta: 3.1 MB). Free memory was 24.5 MB in the beginning and 15.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * Witness Printer took 60.95 ms. Allocated memory is still 51.4 MB. Free memory was 15.8 MB in the beginning and 12.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [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=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 2.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...