./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730c.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_0730c.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 83c30cf69d350d7f7844d9a61780744d2d19365f ........................................................................................................................................................................................................................................................................................... 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_0730c.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 83c30cf69d350d7f7844d9a61780744d2d19365f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:30:19,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:30:19,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:30:19,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:30:19,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:30:19,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:30:19,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:30:19,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:30:19,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:30:19,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:30:19,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:30:19,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:30:19,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:30:19,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:30:19,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:30:19,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:30:19,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:30:19,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:30:19,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:30:19,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:30:19,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:30:19,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:30:19,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:30:19,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:30:19,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:30:19,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:30:19,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:30:19,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:30:19,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:30:19,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:30:19,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:19,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:19,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:19,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:19,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:19,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:19,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:19,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:19,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:19,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:19,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:19,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:30:19,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:19,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:19,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:19,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:19,816 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:19,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:19,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:19,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:30:19,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:19,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:19,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:19,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:19,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:19,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:19,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:19,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:19,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:19,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:19,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:19,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:19,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:19,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:19,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:19,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:19,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:19,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:30:19,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:30:19,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:19,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:19,824 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 -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2020-10-20 00:30:20,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:20,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:20,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:20,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:20,079 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:20,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-10-20 00:30:20,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e45c54a/766882c2ef47403cac5e940704e74d98/FLAGbcbbd8aa2 [2020-10-20 00:30:20,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:20,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-10-20 00:30:20,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e45c54a/766882c2ef47403cac5e940704e74d98/FLAGbcbbd8aa2 [2020-10-20 00:30:21,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e45c54a/766882c2ef47403cac5e940704e74d98 [2020-10-20 00:30:21,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:21,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:21,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:21,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:21,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:21,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322bb391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21, skipping insertion in model container [2020-10-20 00:30:21,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:21,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:21,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:21,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:21,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:21,414 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:21,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21 WrapperNode [2020-10-20 00:30:21,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:21,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:21,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:21,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:21,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:21,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:21,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:21,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:21,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (1/1) ... [2020-10-20 00:30:21,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:21,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:21,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:21,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:21,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (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 00:30:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:30:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:30:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:30:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:30:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:21,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:30:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:30:22,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:30:22,107 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:30:22,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:22 BoogieIcfgContainer [2020-10-20 00:30:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:30:22,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:30:22,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:30:22,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:30:22,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:21" (1/3) ... [2020-10-20 00:30:22,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31881d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:22, skipping insertion in model container [2020-10-20 00:30:22,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:21" (2/3) ... [2020-10-20 00:30:22,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31881d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:22, skipping insertion in model container [2020-10-20 00:30:22,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:22" (3/3) ... [2020-10-20 00:30:22,120 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-10-20 00:30:22,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:30:22,141 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:30:22,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:30:22,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:30:22,188 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:30:22,188 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:30:22,188 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:30:22,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:30:22,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:30:22,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:30:22,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:30:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-20 00:30:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:30:22,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:22,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:22,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:22,218 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-20 00:30:22,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:30:22,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806485884] [2020-10-20 00:30:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:30:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:22,386 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 00:30:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806485884] [2020-10-20 00:30:22,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:22,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:30:22,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272135250] [2020-10-20 00:30:22,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:30:22,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:30:22,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:30:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:30:22,408 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-20 00:30:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:22,433 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-20 00:30:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:30:22,434 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:30:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:22,447 INFO L225 Difference]: With dead ends: 105 [2020-10-20 00:30:22,447 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 00:30:22,451 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 00:30:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 00:30:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 00:30:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 00:30:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-20 00:30:22,495 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-20 00:30:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:22,496 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-20 00:30:22,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:30:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-20 00:30:22,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:30:22,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:22,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:22,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:30:22,498 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-20 00:30:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:30:22,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841777710] [2020-10-20 00:30:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:30:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:22,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:30:22,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:30:22,601 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:30:22,602 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:30:22,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:30:22,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:30:22 BoogieIcfgContainer [2020-10-20 00:30:22,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:30:22,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:30:22,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:30:22,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:30:22,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:22" (3/4) ... [2020-10-20 00:30:22,643 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:30:22,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:30:22,656 INFO L168 Benchmark]: Toolchain (without parser) took 1594.80 ms. Allocated memory was 42.5 MB in the beginning and 48.2 MB in the end (delta: 5.8 MB). Free memory was 20.6 MB in the beginning and 10.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,658 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 32.0 MB. Free memory was 9.3 MB in the beginning and 9.2 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.99 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 19.8 MB in the beginning and 17.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 43.0 MB. Free memory was 16.8 MB in the beginning and 14.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,662 INFO L168 Benchmark]: Boogie Preprocessor took 68.82 ms. Allocated memory is still 43.0 MB. Free memory was 14.4 MB in the beginning and 12.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,663 INFO L168 Benchmark]: RCFGBuilder took 565.15 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 12.1 MB in the beginning and 17.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,664 INFO L168 Benchmark]: TraceAbstraction took 527.44 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 16.8 MB in the beginning and 10.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,666 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 48.2 MB. Free memory was 10.7 MB in the beginning and 10.3 MB in the end (delta: 410.3 kB). Peak memory consumption was 410.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:22,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 32.0 MB. Free memory was 9.3 MB in the beginning and 9.2 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 357.99 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 19.8 MB in the beginning and 17.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 43.0 MB. Free memory was 16.8 MB in the beginning and 14.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 68.82 ms. Allocated memory is still 43.0 MB. Free memory was 14.4 MB in the beginning and 12.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 565.15 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 12.1 MB in the beginning and 17.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 527.44 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 16.8 MB in the beginning and 10.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * Witness Printer took 4.75 ms. Allocated memory is still 48.2 MB. Free memory was 10.7 MB in the beginning and 10.3 MB in the end (delta: 410.3 kB). Peak memory consumption was 410.3 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 someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_0730c.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 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=54occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 00:30:24,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:30:24,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:30:24,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:30:24,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:30:24,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:30:24,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:30:24,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:30:24,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:30:24,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:30:24,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:30:24,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:30:24,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:30:24,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:30:24,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:30:24,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:30:24,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:30:24,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:30:24,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:30:25,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:30:25,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:30:25,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:30:25,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:30:25,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:30:25,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:30:25,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:30:25,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:30:25,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:30:25,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:30:25,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:30:25,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:30:25,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:30:25,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:30:25,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:30:25,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:30:25,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:30:25,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:30:25,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:30:25,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:30:25,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:30:25,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:30:25,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:30:25,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:30:25,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:30:25,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:30:25,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:30:25,099 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:30:25,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:30:25,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:30:25,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:30:25,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:30:25,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:30:25,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:30:25,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:30:25,102 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:30:25,102 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:30:25,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:30:25,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:30:25,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:30:25,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:30:25,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:30:25,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:30:25,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:30:25,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:30:25,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:30:25,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:30:25,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:30:25,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:30:25,106 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:30:25,106 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:30:25,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:30:25,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:30:25,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:30:25,107 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 -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2020-10-20 00:30:25,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:30:25,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:30:25,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:30:25,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:30:25,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:30:25,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-10-20 00:30:25,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d726bb90f/9b36f15a52ec45389952bcf295c35b74/FLAG69d6d4f6c [2020-10-20 00:30:26,018 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:30:26,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-10-20 00:30:26,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d726bb90f/9b36f15a52ec45389952bcf295c35b74/FLAG69d6d4f6c [2020-10-20 00:30:26,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d726bb90f/9b36f15a52ec45389952bcf295c35b74 [2020-10-20 00:30:26,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:30:26,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:30:26,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:26,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:30:26,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:30:26,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d671a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26, skipping insertion in model container [2020-10-20 00:30:26,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:30:26,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:30:26,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:26,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:30:26,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:30:26,788 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:30:26,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26 WrapperNode [2020-10-20 00:30:26,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:30:26,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:26,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:30:26,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:30:26,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:30:26,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:30:26,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:30:26,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:30:26,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (1/1) ... [2020-10-20 00:30:26,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:30:26,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:30:26,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:30:26,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:30:26,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (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 00:30:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:30:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:30:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:30:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:30:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:30:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:30:26,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:30:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:30:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:30:31,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:30:31,650 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:30:31,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:31 BoogieIcfgContainer [2020-10-20 00:30:31,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:30:31,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:30:31,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:30:31,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:30:31,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:30:26" (1/3) ... [2020-10-20 00:30:31,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121a2f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:31, skipping insertion in model container [2020-10-20 00:30:31,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:30:26" (2/3) ... [2020-10-20 00:30:31,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121a2f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:30:31, skipping insertion in model container [2020-10-20 00:30:31,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:31" (3/3) ... [2020-10-20 00:30:31,662 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-10-20 00:30:31,675 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:30:31,683 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:30:31,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:30:31,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:30:31,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:30:31,719 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:30:31,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:30:31,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:30:31,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:30:31,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:30:31,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:30:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-20 00:30:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:30:31,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:31,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:31,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:31,752 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-20 00:30:31,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:31,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424925593] [2020-10-20 00:30:31,763 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 00:30:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:32,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:30:32,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:32,158 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 00:30:32,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:32,163 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 00:30:32,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424925593] [2020-10-20 00:30:32,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:32,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:30:32,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853056921] [2020-10-20 00:30:32,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:30:32,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:32,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:30:32,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:30:32,186 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-20 00:30:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:32,212 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-20 00:30:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:30:32,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:30:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:32,227 INFO L225 Difference]: With dead ends: 105 [2020-10-20 00:30:32,227 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 00:30:32,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 00:30:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 00:30:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 00:30:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 00:30:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-20 00:30:32,276 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-20 00:30:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:32,277 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-20 00:30:32,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:30:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-20 00:30:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:30:32,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:32,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:32,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:30:32,493 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:32,494 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-20 00:30:32,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:32,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105187441] [2020-10-20 00:30:32,500 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 00:30:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:32,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:30:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:32,991 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 00:30:32,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:33,068 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 00:30:33,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105187441] [2020-10-20 00:30:33,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:33,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:30:33,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458239320] [2020-10-20 00:30:33,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:30:33,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:33,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:30:33,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:30:33,073 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-10-20 00:30:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:34,595 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2020-10-20 00:30:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:30:34,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 00:30:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:34,598 INFO L225 Difference]: With dead ends: 105 [2020-10-20 00:30:34,599 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 00:30:34,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:30:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 00:30:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-10-20 00:30:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 00:30:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2020-10-20 00:30:34,611 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2020-10-20 00:30:34,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:34,611 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2020-10-20 00:30:34,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:30:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2020-10-20 00:30:34,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:30:34,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:34,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:34,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:30:34,838 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-10-20 00:30:34,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:34,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390384841] [2020-10-20 00:30:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:34,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:30:34,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:34,977 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 00:30:34,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:35,013 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 00:30:35,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390384841] [2020-10-20 00:30:35,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:35,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-20 00:30:35,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328708614] [2020-10-20 00:30:35,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 00:30:35,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:35,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 00:30:35,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:30:35,017 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 7 states. [2020-10-20 00:30:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:35,152 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-10-20 00:30:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:30:35,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-20 00:30:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:35,154 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:30:35,154 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 00:30:35,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:30:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 00:30:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-10-20 00:30:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 00:30:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2020-10-20 00:30:35,164 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2020-10-20 00:30:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:35,164 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2020-10-20 00:30:35,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 00:30:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2020-10-20 00:30:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:30:35,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:35,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:35,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:30:35,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:35,382 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2020-10-20 00:30:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:35,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519649271] [2020-10-20 00:30:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:30:35,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:35,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:30:35,608 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 00:30:35,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:35,854 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 00:30:35,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519649271] [2020-10-20 00:30:35,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:35,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-10-20 00:30:35,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453571706] [2020-10-20 00:30:35,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 00:30:35,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:35,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 00:30:35,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-20 00:30:35,856 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 14 states. [2020-10-20 00:30:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:36,282 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2020-10-20 00:30:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:30:36,283 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-10-20 00:30:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:36,284 INFO L225 Difference]: With dead ends: 60 [2020-10-20 00:30:36,284 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 00:30:36,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-20 00:30:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 00:30:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-20 00:30:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 00:30:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2020-10-20 00:30:36,293 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2020-10-20 00:30:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:36,293 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-10-20 00:30:36,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 00:30:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2020-10-20 00:30:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 00:30:36,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:36,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:36,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:30:36,496 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:36,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2020-10-20 00:30:36,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:36,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147483568] [2020-10-20 00:30:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:36,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:30:36,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:36,666 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 00:30:36,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:36,732 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 00:30:36,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147483568] [2020-10-20 00:30:36,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:36,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:30:36,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604907348] [2020-10-20 00:30:36,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:30:36,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:36,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:30:36,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:30:36,735 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 8 states. [2020-10-20 00:30:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:37,161 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2020-10-20 00:30:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:30:37,163 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-20 00:30:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:37,164 INFO L225 Difference]: With dead ends: 87 [2020-10-20 00:30:37,164 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:30:37,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:30:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:30:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-20 00:30:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 00:30:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-20 00:30:37,171 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2020-10-20 00:30:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:37,171 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-20 00:30:37,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:30:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-20 00:30:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 00:30:37,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:37,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:37,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 00:30:37,387 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:37,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:37,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2020-10-20 00:30:37,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:37,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105657789] [2020-10-20 00:30:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:37,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:30:37,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:30:37,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:30:37,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105657789] [2020-10-20 00:30:37,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:37,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:30:37,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069420140] [2020-10-20 00:30:37,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:30:37,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:37,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:30:37,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:30:37,541 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2020-10-20 00:30:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:37,593 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2020-10-20 00:30:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:30:37,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-20 00:30:37,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:37,595 INFO L225 Difference]: With dead ends: 84 [2020-10-20 00:30:37,595 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 00:30:37,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:30:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 00:30:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 00:30:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 00:30:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2020-10-20 00:30:37,603 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2020-10-20 00:30:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:37,603 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2020-10-20 00:30:37,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:30:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2020-10-20 00:30:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 00:30:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:37,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:37,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 00:30:37,822 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2020-10-20 00:30:37,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:37,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411684146] [2020-10-20 00:30:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:37,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:30:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:30:38,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:30:38,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411684146] [2020-10-20 00:30:38,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:30:38,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-10-20 00:30:38,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352206391] [2020-10-20 00:30:38,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:30:38,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:38,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:30:38,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:30:38,081 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand 9 states. [2020-10-20 00:30:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:38,212 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2020-10-20 00:30:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 00:30:38,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-20 00:30:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:38,216 INFO L225 Difference]: With dead ends: 96 [2020-10-20 00:30:38,216 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 00:30:38,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:30:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 00:30:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-20 00:30:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 00:30:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2020-10-20 00:30:38,225 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 38 [2020-10-20 00:30:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:38,225 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2020-10-20 00:30:38,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:30:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2020-10-20 00:30:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 00:30:38,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:38,227 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:38,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 00:30:38,436 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1788073277, now seen corresponding path program 2 times [2020-10-20 00:30:38,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:38,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149149328] [2020-10-20 00:30:38,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:38,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 00:30:38,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:30:38,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:30:38,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-20 00:30:38,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:30:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-20 00:30:38,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149149328] [2020-10-20 00:30:38,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:38,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:30:38,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506058640] [2020-10-20 00:30:38,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:30:38,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:30:38,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:30:38,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:30:38,597 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2020-10-20 00:30:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:30:38,741 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-10-20 00:30:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:30:38,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-20 00:30:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:30:38,746 INFO L225 Difference]: With dead ends: 96 [2020-10-20 00:30:38,746 INFO L226 Difference]: Without dead ends: 75 [2020-10-20 00:30:38,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:30:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-20 00:30:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-20 00:30:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 00:30:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2020-10-20 00:30:38,755 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 50 [2020-10-20 00:30:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:30:38,756 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2020-10-20 00:30:38,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:30:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2020-10-20 00:30:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-20 00:30:38,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:30:38,758 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:30:38,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 00:30:38,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:30:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:30:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 1 times [2020-10-20 00:30:38,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:30:38,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491370021] [2020-10-20 00:30:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-20 00:30:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:30:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:39,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491370021] [2020-10-20 00:30:39,194 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:30:39,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1591769856] [2020-10-20 00:30:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:30:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:30:39,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:39,466 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:30:39,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067845114] [2020-10-20 00:30:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:30:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:30:39,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:30:39,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:30:39,567 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:30:39,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:30:39,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:30:39,568 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:30:39,568 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:30:40,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:30:40,204 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:30:40,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:30:40 BoogieIcfgContainer [2020-10-20 00:30:40,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:30:40,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:30:40,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:30:40,206 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:30:40,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:30:31" (3/4) ... [2020-10-20 00:30:40,209 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:30:40,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:30:40,211 INFO L168 Benchmark]: Toolchain (without parser) took 13810.30 ms. Allocated memory was 43.0 MB in the beginning and 60.8 MB in the end (delta: 17.8 MB). Free memory was 22.9 MB in the beginning and 40.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 296.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,212 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 32.5 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 00:30:40,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.28 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.0 MB in the beginning and 19.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.40 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 17.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,214 INFO L168 Benchmark]: Boogie Preprocessor took 58.09 ms. Allocated memory is still 43.5 MB. Free memory was 17.3 MB in the beginning and 15.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,215 INFO L168 Benchmark]: RCFGBuilder took 4748.29 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 15.0 MB in the beginning and 24.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,216 INFO L168 Benchmark]: TraceAbstraction took 8550.93 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 24.1 MB in the beginning and 41.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,217 INFO L168 Benchmark]: Witness Printer took 3.69 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 40.4 MB in the end (delta: 659.0 kB). Peak memory consumption was 659.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:30:40,225 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 32.5 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 383.28 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.0 MB in the beginning and 19.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 55.40 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 17.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 58.09 ms. Allocated memory is still 43.5 MB. Free memory was 17.3 MB in the beginning and 15.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 4748.29 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 15.0 MB in the beginning and 24.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8550.93 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 24.1 MB in the beginning and 41.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 14.3 GB. * Witness Printer took 3.69 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 40.4 MB in the end (delta: 659.0 kB). Peak memory consumption was 659.0 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) [L38] COND TRUE ix0 <= 0 [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) [L41] COND FALSE !(ix0 < 0) [L45] m = (ix0 >> 20) [L46] COND TRUE m == 0 [L47] COND TRUE ix0 == 0 [L48] m -= 21 [L49] ix0 |= (ix1 >> 11) [L50] ix1 <<= 21 [L47] COND FALSE !(ix0 == 0) [L52] i = 0 [L52] COND FALSE !((ix0 & 0x00100000) == 0) [L54] m -= i - 1 [L55] ix0 |= (ix1 >> (32 - i)) [L56] ix1 <<= i [L58] m -= 1023 [L59] ix0 = (ix0 & 0x000fffff) | 0x00100000 [L60] COND TRUE m & 1 [L61] ix0 += ix0 + ((ix1 & sign) >> 31) [L62] ix1 += ix1 [L64] m >>= 1 [L66] ix0 += ix0 + ((ix1 & sign) >> 31) [L67] ix1 += ix1 [L68] EXPR s1 = 0 [L68] EXPR s0 = s1 = 0 [L68] EXPR q1 = s0 = s1 = 0 [L68] q = q1 = s0 = s1 = 0 [L69] r = 0x00200000 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND FALSE !(r != 0) [L83] r = sign [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND FALSE !(r != 0) [L102] COND FALSE !((ix0 | ix1) != 0) [L117] ix0 = (q >> 1) + 0x3fe00000 [L118] ix1 = q1 >> 1 [L119] COND TRUE (q & 1) == 1 [L120] ix1 |= sign [L121] ix0 += (m << 20) [L123] ieee_double_shape_type iw_u; [L124] iw_u.parts.msw = (ix0) [L125] iw_u.parts.lsw = (ix1) [L126] EXPR iw_u.value [L126] (z) = iw_u.value [L128] return z; [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_0730c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.4s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 477 SDtfs, 622 SDslu, 956 SDs, 0 SdLazy, 270 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 323 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=8, 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, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 190 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 364 ConstructedInterpolants, 22 QuantifiedInterpolants, 34324 SizeOfPredicates, 31 NumberOfNonLiveVariables, 583 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 108/118 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...