./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../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 0.2.0-5485861 [2020-10-25 21:53:36,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:36,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:36,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:36,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:36,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:36,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:36,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:36,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:36,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:36,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:36,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:36,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:36,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:36,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:36,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:36,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:36,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:36,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:36,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:36,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:36,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:36,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:36,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:36,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:36,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:36,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:36,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:36,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:36,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:36,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:36,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:36,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:36,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:36,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:36,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:36,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:36,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:36,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:36,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:36,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:36,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:53:36,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:36,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:36,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:36,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:36,781 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:36,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:36,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:36,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:53:36,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:36,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:36,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:36,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:36,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:36,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:36,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:36,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:36,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:36,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:36,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:36,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:36,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:36,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:36,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:36,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:36,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:36,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:53:36,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:53:36,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:36,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:36,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-10-25 21:53:37,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:37,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:37,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:37,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:37,271 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:37,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-25 21:53:37,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a941182d2/a436c8e6527f41169857cf715c50aaab/FLAG8f240ff05 [2020-10-25 21:53:38,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:38,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-25 21:53:38,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a941182d2/a436c8e6527f41169857cf715c50aaab/FLAG8f240ff05 [2020-10-25 21:53:38,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a941182d2/a436c8e6527f41169857cf715c50aaab [2020-10-25 21:53:38,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:38,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:38,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:38,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:38,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:38,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f0eda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38, skipping insertion in model container [2020-10-25 21:53:38,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:38,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:38,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:38,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:38,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:38,817 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:38,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38 WrapperNode [2020-10-25 21:53:38,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:38,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:38,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:38,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:38,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:38,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:38,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:38,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:38,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:38,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:39,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:39,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:39,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (1/1) ... [2020-10-25 21:53:39,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:39,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:39,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:39,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:39,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (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 [2020-10-25 21:53:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:53:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:53:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:53:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:53:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:39,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:53:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-25 21:53:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:40,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:40,057 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-25 21:53:40,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:40 BoogieIcfgContainer [2020-10-25 21:53:40,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:40,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:40,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:40,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:40,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:38" (1/3) ... [2020-10-25 21:53:40,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbbefdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:40, skipping insertion in model container [2020-10-25 21:53:40,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:38" (2/3) ... [2020-10-25 21:53:40,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbbefdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:40, skipping insertion in model container [2020-10-25 21:53:40,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:40" (3/3) ... [2020-10-25 21:53:40,076 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-10-25 21:53:40,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:40,095 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:40,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:40,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:40,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:40,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:40,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:40,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:40,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:40,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:40,162 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-25 21:53:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:40,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:40,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:40,190 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:40,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-25 21:53:40,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:40,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391022963] [2020-10-25 21:53:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:40,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391022963] [2020-10-25 21:53:40,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:40,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:53:40,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307467596] [2020-10-25 21:53:40,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:40,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:40,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:40,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:40,443 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-25 21:53:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:40,484 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-25 21:53:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:40,486 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:40,499 INFO L225 Difference]: With dead ends: 119 [2020-10-25 21:53:40,499 INFO L226 Difference]: Without dead ends: 56 [2020-10-25 21:53:40,503 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 [2020-10-25 21:53:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-25 21:53:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-25 21:53:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-25 21:53:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-25 21:53:40,546 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-25 21:53:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:40,546 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-25 21:53:40,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-25 21:53:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 21:53:40,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:40,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:40,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:53:40,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:40,550 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-25 21:53:40,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:40,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310065786] [2020-10-25 21:53:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:40,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:40,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:40,851 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:53:40,852 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:40,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:53:40,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:40 BoogieIcfgContainer [2020-10-25 21:53:40,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:40,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:40,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:40,897 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:40,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:40" (3/4) ... [2020-10-25 21:53:40,901 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:53:40,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:40,905 INFO L168 Benchmark]: Toolchain (without parser) took 2508.69 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 21.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:40,906 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 26.9 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:40,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.97 ms. Allocated memory is still 46.1 MB. Free memory was 23.0 MB in the beginning and 21.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:40,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.32 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 40.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:40,908 INFO L168 Benchmark]: Boogie Preprocessor took 88.96 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 38.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:40,909 INFO L168 Benchmark]: RCFGBuilder took 1020.66 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 34.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:40,910 INFO L168 Benchmark]: TraceAbstraction took 832.21 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 22.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:40,911 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 56.6 MB. Free memory was 22.1 MB in the beginning and 21.8 MB in the end (delta: 351.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:40,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 26.9 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.97 ms. Allocated memory is still 46.1 MB. Free memory was 23.0 MB in the beginning and 21.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.32 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 40.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.96 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 38.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1020.66 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 34.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 832.21 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 22.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 56.6 MB. Free memory was 22.1 MB in the beginning and 21.8 MB in the end (delta: 351.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of 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 0.2.0-5485861 [2020-10-25 21:53:43,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:43,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:43,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:43,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:43,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:43,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:43,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:43,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:43,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:43,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:43,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:43,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:43,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:43,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:43,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:43,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:43,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:43,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:43,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:43,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:43,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:43,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:43,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:43,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:43,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:43,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:43,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:43,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:43,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:43,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:43,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:43,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:43,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:43,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:43,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:43,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:43,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:43,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:43,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:43,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:43,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:53:43,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:43,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:43,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:43,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:43,717 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:43,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:43,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:43,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:43,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:43,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:43,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:43,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:43,720 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:53:43,721 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:53:43,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:43,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:43,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:43,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:43,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:43,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:43,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:43,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:43,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:43,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:43,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:43,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:43,725 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:53:43,725 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:53:43,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:43,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:43,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:53:43,726 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-10-25 21:53:44,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:44,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:44,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:44,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:44,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:44,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-25 21:53:44,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec7e8764/d93cf768e6a24d799853ea8c070b95d0/FLAG0ff0e72a5 [2020-10-25 21:53:44,968 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:44,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-25 21:53:44,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec7e8764/d93cf768e6a24d799853ea8c070b95d0/FLAG0ff0e72a5 [2020-10-25 21:53:45,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec7e8764/d93cf768e6a24d799853ea8c070b95d0 [2020-10-25 21:53:45,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:45,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:45,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:45,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:45,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:45,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c0aea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45, skipping insertion in model container [2020-10-25 21:53:45,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:45,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:45,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:45,678 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:45,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:45,794 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:45,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45 WrapperNode [2020-10-25 21:53:45,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:45,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:45,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:45,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:45,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:45,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:45,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:45,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:45,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (1/1) ... [2020-10-25 21:53:45,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:45,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:45,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:45,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:45,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (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 [2020-10-25 21:53:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:53:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:53:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:53:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-25 21:53:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:53:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:46,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:53:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:50,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:50,290 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-25 21:53:50,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:50 BoogieIcfgContainer [2020-10-25 21:53:50,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:50,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:50,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:50,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:50,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:45" (1/3) ... [2020-10-25 21:53:50,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126ed18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:50, skipping insertion in model container [2020-10-25 21:53:50,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:45" (2/3) ... [2020-10-25 21:53:50,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126ed18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:50, skipping insertion in model container [2020-10-25 21:53:50,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:50" (3/3) ... [2020-10-25 21:53:50,303 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-10-25 21:53:50,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:50,322 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:50,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:50,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:50,378 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:50,378 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:50,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:50,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:50,379 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:50,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:50,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-25 21:53:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:50,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:50,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:50,411 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:50,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:50,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-25 21:53:50,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:50,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672977990] [2020-10-25 21:53:50,439 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 [2020-10-25 21:53:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:51,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:53:51,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:51,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:51,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672977990] [2020-10-25 21:53:51,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:51,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:53:51,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818871420] [2020-10-25 21:53:51,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:51,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:51,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:51,636 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-25 21:53:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:51,663 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-25 21:53:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:51,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:51,676 INFO L225 Difference]: With dead ends: 119 [2020-10-25 21:53:51,676 INFO L226 Difference]: Without dead ends: 56 [2020-10-25 21:53:51,680 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 [2020-10-25 21:53:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-25 21:53:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-25 21:53:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-25 21:53:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-25 21:53:51,724 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-25 21:53:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:51,724 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-25 21:53:51,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-25 21:53:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 21:53:51,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:51,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:51,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:53:51,940 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-25 21:53:51,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:51,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513960020] [2020-10-25 21:53:51,944 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 [2020-10-25 21:53:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:53,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:55,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:55,195 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:53:55,195 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:55,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:53:55,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:55 BoogieIcfgContainer [2020-10-25 21:53:55,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:55,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:55,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:55,446 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:55,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:50" (3/4) ... [2020-10-25 21:53:55,450 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:53:55,520 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:55,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:55,523 INFO L168 Benchmark]: Toolchain (without parser) took 10184.75 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.1 MB in the beginning and 30.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,524 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 27.8 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:55,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.45 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 18.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.86 ms. Allocated memory is still 56.6 MB. Free memory was 40.6 MB in the beginning and 38.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,526 INFO L168 Benchmark]: Boogie Preprocessor took 54.93 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 36.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,532 INFO L168 Benchmark]: RCFGBuilder took 4371.30 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 31.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,532 INFO L168 Benchmark]: TraceAbstraction took 5150.01 ms. Allocated memory is still 56.6 MB. Free memory was 30.9 MB in the beginning and 32.8 MB in the end (delta: -1.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,533 INFO L168 Benchmark]: Witness Printer took 74.39 ms. Allocated memory is still 56.6 MB. Free memory was 32.8 MB in the beginning and 30.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:55,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 27.8 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.45 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 18.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.86 ms. Allocated memory is still 56.6 MB. Free memory was 40.6 MB in the beginning and 38.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.93 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 36.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4371.30 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 31.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5150.01 ms. Allocated memory is still 56.6 MB. Free memory was 30.9 MB in the beginning and 32.8 MB in the end (delta: -1.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 74.39 ms. Allocated memory is still 56.6 MB. Free memory was 32.8 MB in the beginning and 30.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 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, 2.4s 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...