./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.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_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 ................................................................................................................................................................................................................................................................................................................. 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_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 ............................................................................................................................................................................................................................................................................................................................. 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 00:33:03,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:03,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:03,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:03,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:03,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:03,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:03,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:03,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:03,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:03,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:03,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:03,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:03,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:03,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:03,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:03,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:03,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:03,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:03,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:03,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:03,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:03,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:03,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:03,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:03,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:03,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:03,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:03,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:03,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:03,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:03,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:03,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:03,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:03,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:03,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:03,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:03,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:03,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:03,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:03,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:03,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:33:03,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:03,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:03,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:03,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:03,763 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:03,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:03,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:03,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:33:03,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:03,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:03,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:03,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:03,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:03,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:03,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:03,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:03,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:03,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:03,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:03,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:03,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:03,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:03,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:03,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:03,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:03,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:33:03,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:33:03,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:03,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:03,768 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 -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-10-20 00:33:03,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:03,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:03,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:04,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:04,002 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:04,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-20 00:33:04,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38888b62/5617d7051b98464e9ab7a88705e087c5/FLAG85f964a95 [2020-10-20 00:33:04,743 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:04,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-20 00:33:04,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38888b62/5617d7051b98464e9ab7a88705e087c5/FLAG85f964a95 [2020-10-20 00:33:05,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38888b62/5617d7051b98464e9ab7a88705e087c5 [2020-10-20 00:33:05,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:05,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:05,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:05,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:05,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:05,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe21d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05, skipping insertion in model container [2020-10-20 00:33:05,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:05,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:05,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:05,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:05,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:05,538 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:05,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05 WrapperNode [2020-10-20 00:33:05,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:05,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:05,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:05,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:05,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:05,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:05,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:05,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:05,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:05,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:05,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:05,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:05,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (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 00:33:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:33:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:33:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:33:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:06,349 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:06,350 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:33:06,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:06 BoogieIcfgContainer [2020-10-20 00:33:06,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:06,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:06,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:06,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:06,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:05" (1/3) ... [2020-10-20 00:33:06,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24eebe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:06, skipping insertion in model container [2020-10-20 00:33:06,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05" (2/3) ... [2020-10-20 00:33:06,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24eebe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:06, skipping insertion in model container [2020-10-20 00:33:06,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:06" (3/3) ... [2020-10-20 00:33:06,360 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-10-20 00:33:06,373 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:06,381 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:06,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:06,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:06,430 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:06,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:06,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:06,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:06,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:06,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:06,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-20 00:33:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:06,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:06,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:06,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-20 00:33:06,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:06,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814239805] [2020-10-20 00:33:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:06,638 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 00:33:06,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814239805] [2020-10-20 00:33:06,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:06,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:06,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200882782] [2020-10-20 00:33:06,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:06,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:06,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:06,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:06,663 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-20 00:33:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:06,689 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-20 00:33:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:06,690 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:33:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:06,703 INFO L225 Difference]: With dead ends: 119 [2020-10-20 00:33:06,703 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:33:06,707 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 00:33:06,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:33:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 00:33:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 00:33:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-20 00:33:06,749 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-20 00:33:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:06,750 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-20 00:33:06,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-20 00:33:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:33:06,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:06,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:06,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:06,752 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:06,752 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-20 00:33:06,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:06,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089716479] [2020-10-20 00:33:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:06,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:07,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:07,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:07,079 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:07,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:07,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:07 BoogieIcfgContainer [2020-10-20 00:33:07,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:07,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:07,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:07,146 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:07,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:06" (3/4) ... [2020-10-20 00:33:07,151 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:07,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:07,154 INFO L168 Benchmark]: Toolchain (without parser) took 2032.30 ms. Allocated memory was 40.9 MB in the beginning and 48.2 MB in the end (delta: 7.3 MB). Free memory was 18.3 MB in the beginning and 21.5 MB in the end (delta: -3.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,155 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.91 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 12.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.51 ms. Allocated memory is still 41.9 MB. Free memory was 12.9 MB in the beginning and 10.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,158 INFO L168 Benchmark]: Boogie Preprocessor took 58.42 ms. Allocated memory was 41.9 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Free memory was 10.0 MB in the beginning and 24.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 298.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,159 INFO L168 Benchmark]: RCFGBuilder took 688.96 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 24.8 MB in the beginning and 22.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,160 INFO L168 Benchmark]: TraceAbstraction took 792.55 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 21.9 MB in the end (delta: 78.1 kB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,161 INFO L168 Benchmark]: Witness Printer took 5.57 ms. Allocated memory is still 48.2 MB. Free memory was 21.9 MB in the beginning and 21.5 MB in the end (delta: 346.9 kB). Peak memory consumption was 346.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:07,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 412.91 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 12.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.51 ms. Allocated memory is still 41.9 MB. Free memory was 12.9 MB in the beginning and 10.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 58.42 ms. Allocated memory was 41.9 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Free memory was 10.0 MB in the beginning and 24.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 298.2 kB. Max. memory is 14.3 GB. * RCFGBuilder took 688.96 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 24.8 MB in the beginning and 22.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 792.55 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 21.9 MB in the end (delta: 78.1 kB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.57 ms. Allocated memory is still 48.2 MB. Free memory was 21.9 MB in the beginning and 21.5 MB in the end (delta: 346.9 kB). Peak memory consumption was 346.9 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 someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, 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}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L185] COND TRUE isfinite_double(x) [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}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 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=61occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 00:33:09,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:09,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:09,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:09,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:09,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:09,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:09,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:09,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:09,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:09,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:09,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:09,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:09,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:09,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:09,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:09,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:09,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:09,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:09,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:09,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:09,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:09,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:09,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:09,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:09,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:09,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:09,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:09,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:09,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:09,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:09,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:09,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:09,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:09,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:09,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:09,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:09,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:09,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:09,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:09,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:09,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:09,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:09,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:09,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:09,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:09,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:09,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:09,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:09,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:09,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:09,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:09,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:09,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:09,505 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:09,505 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:09,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:09,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:09,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:09,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:09,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:09,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:09,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:09,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:09,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:09,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:09,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:09,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:09,509 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:09,509 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:09,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:09,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:09,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:09,510 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 -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-10-20 00:33:09,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:09,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:09,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:09,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:09,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:09,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-20 00:33:09,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6ec76fc/2a264c8c489745b785e19e0f794451b6/FLAGbb756997c [2020-10-20 00:33:10,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:10,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-20 00:33:10,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6ec76fc/2a264c8c489745b785e19e0f794451b6/FLAGbb756997c [2020-10-20 00:33:10,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6ec76fc/2a264c8c489745b785e19e0f794451b6 [2020-10-20 00:33:10,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:10,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:10,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:10,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:10,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:10,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:10" (1/1) ... [2020-10-20 00:33:10,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f78e2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:10, skipping insertion in model container [2020-10-20 00:33:10,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:10" (1/1) ... [2020-10-20 00:33:10,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:10,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:11,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:11,271 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:11,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:11,342 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:11,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11 WrapperNode [2020-10-20 00:33:11,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:11,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:11,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:11,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:11,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:11,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:11,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:11,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:11,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (1/1) ... [2020-10-20 00:33:11,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:11,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:11,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:11,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:11,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (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 00:33:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:33:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:33:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:33:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:15,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:15,454 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:33:15,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:15 BoogieIcfgContainer [2020-10-20 00:33:15,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:15,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:15,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:15,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:15,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:10" (1/3) ... [2020-10-20 00:33:15,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61687384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:15, skipping insertion in model container [2020-10-20 00:33:15,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:11" (2/3) ... [2020-10-20 00:33:15,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61687384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:15, skipping insertion in model container [2020-10-20 00:33:15,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:15" (3/3) ... [2020-10-20 00:33:15,466 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-10-20 00:33:15,479 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:15,488 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:15,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:15,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:15,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:15,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:15,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:15,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:15,539 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:15,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:15,539 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-20 00:33:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:33:15,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:15,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:15,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:15,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-20 00:33:15,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:15,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850101171] [2020-10-20 00:33:15,583 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 00:33:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:16,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:16,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:16,649 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 00:33:16,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:16,655 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 00:33:16,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850101171] [2020-10-20 00:33:16,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:16,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:16,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430864367] [2020-10-20 00:33:16,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:16,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:16,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:16,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:16,680 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-20 00:33:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:16,707 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-20 00:33:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:16,709 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:33:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:16,722 INFO L225 Difference]: With dead ends: 119 [2020-10-20 00:33:16,722 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:33:16,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 00:33:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:33:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 00:33:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 00:33:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-20 00:33:16,779 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-20 00:33:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:16,780 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-20 00:33:16,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-20 00:33:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:33:16,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:16,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:16,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:16,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-20 00:33:16,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:16,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096838754] [2020-10-20 00:33:17,000 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 00:33:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:18,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:20,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:20,405 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:33:20,405 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:20,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:33:20,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:20 BoogieIcfgContainer [2020-10-20 00:33:20,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:20,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:20,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:20,654 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:20,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:15" (3/4) ... [2020-10-20 00:33:20,659 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:33:20,723 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:33:20,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:20,726 INFO L168 Benchmark]: Toolchain (without parser) took 9828.88 ms. Allocated memory was 43.0 MB in the beginning and 50.3 MB in the end (delta: 7.3 MB). Free memory was 24.3 MB in the beginning and 22.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,727 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 33.0 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.98 ms. Allocated memory was 43.0 MB in the beginning and 44.0 MB in the end (delta: 1.0 MB). Free memory was 23.4 MB in the beginning and 20.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.26 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 18.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,730 INFO L168 Benchmark]: Boogie Preprocessor took 48.92 ms. Allocated memory is still 44.0 MB. Free memory was 18.3 MB in the beginning and 15.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,730 INFO L168 Benchmark]: RCFGBuilder took 4007.28 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 15.6 MB in the beginning and 14.8 MB in the end (delta: 786.3 kB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,731 INFO L168 Benchmark]: TraceAbstraction took 5195.40 ms. Allocated memory was 46.1 MB in the beginning and 50.3 MB in the end (delta: 4.2 MB). Free memory was 14.5 MB in the beginning and 25.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,732 INFO L168 Benchmark]: Witness Printer took 70.55 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 22.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:20,736 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 33.0 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 439.98 ms. Allocated memory was 43.0 MB in the beginning and 44.0 MB in the end (delta: 1.0 MB). Free memory was 23.4 MB in the beginning and 20.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 56.26 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 18.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 48.92 ms. Allocated memory is still 44.0 MB. Free memory was 18.3 MB in the beginning and 15.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 4007.28 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 15.6 MB in the beginning and 14.8 MB in the end (delta: 786.3 kB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5195.40 ms. Allocated memory was 46.1 MB in the beginning and 50.3 MB in the end (delta: 4.2 MB). Free memory was 14.5 MB in the beginning and 25.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. * Witness Printer took 70.55 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 22.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 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}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] COND TRUE isfinite_double(x) [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}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 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...