./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_loose.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-benchs/zonotope_loose.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 4ffcfb5240555d68939cfa296fd9345209c9c26c ....................................................................................................................................................................................................................................................................... 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-benchs/zonotope_loose.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 4ffcfb5240555d68939cfa296fd9345209c9c26c ......................................................................................................................................................................................................................................................................................................... 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 00:23:16,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:23:16,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:23:16,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:23:16,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:23:16,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:23:16,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:23:16,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:23:16,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:23:16,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:23:16,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:23:16,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:23:16,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:23:16,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:23:16,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:23:16,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:23:16,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:23:16,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:23:16,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:23:16,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:23:16,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:23:16,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:23:16,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:23:16,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:23:16,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:23:16,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:23:16,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:23:16,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:23:16,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:23:16,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:23:16,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:23:16,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:23:16,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:23:16,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:23:16,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:23:16,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:23:16,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:23:16,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:23:16,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:23:16,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:23:16,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:23:16,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:23:16,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:23:16,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:23:16,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:23:16,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:23:16,823 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:23:16,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:23:16,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:23:16,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:23:16,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:23:16,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:23:16,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:23:16,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:23:16,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:23:16,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:23:16,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:23:16,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:23:16,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:23:16,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:23:16,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:23:16,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:23:16,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:23:16,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:23:16,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:23:16,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:23:16,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:23:16,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:23:16,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:23:16,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:23:16,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:23:16,832 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 -> 4ffcfb5240555d68939cfa296fd9345209c9c26c [2020-10-20 00:23:17,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:23:17,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:23:17,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:23:17,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:23:17,087 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:23:17,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c [2020-10-20 00:23:17,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b343ee0/99ee100028ad4378908f541713ac56ca/FLAG11e9c08c7 [2020-10-20 00:23:17,649 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:23:17,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c [2020-10-20 00:23:17,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b343ee0/99ee100028ad4378908f541713ac56ca/FLAG11e9c08c7 [2020-10-20 00:23:18,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b343ee0/99ee100028ad4378908f541713ac56ca [2020-10-20 00:23:18,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:23:18,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:23:18,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:18,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:23:18,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:23:18,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd96646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18, skipping insertion in model container [2020-10-20 00:23:18,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:23:18,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:23:18,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:18,406 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:23:18,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:18,449 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:23:18,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18 WrapperNode [2020-10-20 00:23:18,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:18,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:18,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:23:18,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:23:18,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:18,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:23:18,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:23:18,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:23:18,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (1/1) ... [2020-10-20 00:23:18,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:23:18,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:23:18,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:23:18,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:23:18,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (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 00:23:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:23:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:23:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:23:18,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:23:18,823 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:23:18,824 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 00:23:18,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:18 BoogieIcfgContainer [2020-10-20 00:23:18,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:23:18,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:23:18,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:23:18,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:23:18,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:23:18" (1/3) ... [2020-10-20 00:23:18,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6332f199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:18, skipping insertion in model container [2020-10-20 00:23:18,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:18" (2/3) ... [2020-10-20 00:23:18,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6332f199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:18, skipping insertion in model container [2020-10-20 00:23:18,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:18" (3/3) ... [2020-10-20 00:23:18,836 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c [2020-10-20 00:23:18,848 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:23:18,855 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:23:18,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:23:18,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:23:18,898 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:23:18,898 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:23:18,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:23:18,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:23:18,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:23:18,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:23:18,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:23:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:23:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:18,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:18,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:18,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2020-10-20 00:23:18,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:23:18,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756053113] [2020-10-20 00:23:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:23:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:19,101 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 00:23:19,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756053113] [2020-10-20 00:23:19,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:23:19,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:23:19,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005970831] [2020-10-20 00:23:19,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:23:19,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:23:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:23:19,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:23:19,128 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:23:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:23:19,156 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-20 00:23:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:23:19,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:23:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:23:19,172 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:23:19,172 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:23:19,180 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 00:23:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:23:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:23:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:23:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:23:19,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-10-20 00:23:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:23:19,210 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:23:19,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:23:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:23:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:19,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:19,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:19,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:23:19,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:19,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:19,212 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2020-10-20 00:23:19,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:23:19,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745150144] [2020-10-20 00:23:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:23:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:23:19,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:23:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:23:19,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:23:19,295 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:23:19,295 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:23:19,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:23:19,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:23:19 BoogieIcfgContainer [2020-10-20 00:23:19,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:23:19,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:23:19,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:23:19,322 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:23:19,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:18" (3/4) ... [2020-10-20 00:23:19,326 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:23:19,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:23:19,329 INFO L168 Benchmark]: Toolchain (without parser) took 1262.62 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 8.1 MB in the beginning and 17.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,330 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 34.6 MB. Free memory was 13.5 MB in the beginning and 13.5 MB in the end (delta: 52.8 kB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.47 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 7.3 MB in the beginning and 27.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.99 ms. Allocated memory is still 44.6 MB. Free memory was 26.9 MB in the beginning and 25.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,337 INFO L168 Benchmark]: Boogie Preprocessor took 40.80 ms. Allocated memory is still 44.6 MB. Free memory was 25.3 MB in the beginning and 24.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,338 INFO L168 Benchmark]: RCFGBuilder took 286.41 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 24.0 MB in the beginning and 25.0 MB in the end (delta: -990.5 kB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,339 INFO L168 Benchmark]: TraceAbstraction took 493.01 ms. Allocated memory is still 46.1 MB. Free memory was 24.5 MB in the beginning and 17.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,339 INFO L168 Benchmark]: Witness Printer took 4.89 ms. Allocated memory is still 46.1 MB. Free memory was 17.8 MB in the beginning and 17.6 MB in the end (delta: 272.2 kB). Peak memory consumption was 272.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:19,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 34.6 MB. Free memory was 13.5 MB in the beginning and 13.5 MB in the end (delta: 52.8 kB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 379.47 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 7.3 MB in the beginning and 27.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.99 ms. Allocated memory is still 44.6 MB. Free memory was 26.9 MB in the beginning and 25.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 40.80 ms. Allocated memory is still 44.6 MB. Free memory was 25.3 MB in the beginning and 24.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 286.41 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 24.0 MB in the beginning and 25.0 MB in the end (delta: -990.5 kB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 493.01 ms. Allocated memory is still 46.1 MB. Free memory was 24.5 MB in the beginning and 17.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * Witness Printer took 4.89 ms. Allocated memory is still 46.1 MB. Free memory was 17.8 MB in the beginning and 17.6 MB in the end (delta: 272.2 kB). Peak memory consumption was 272.2 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 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L3] __assert_fail("0", "zonotope_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 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: 13 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=14occurred 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, 16 NumberOfCodeBlocks, 16 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 00:23:21,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:23:21,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:23:21,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:23:21,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:23:21,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:23:21,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:23:21,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:23:21,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:23:21,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:23:21,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:23:21,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:23:21,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:23:21,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:23:21,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:23:21,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:23:21,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:23:21,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:23:21,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:23:21,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:23:21,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:23:21,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:23:21,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:23:21,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:23:21,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:23:21,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:23:21,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:23:21,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:23:21,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:23:21,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:23:21,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:23:21,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:23:21,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:23:21,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:23:21,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:23:21,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:23:21,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:23:21,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:23:21,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:23:21,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:23:21,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:23:21,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:23:21,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:23:21,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:23:21,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:23:21,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:23:21,783 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:23:21,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:23:21,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:23:21,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:23:21,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:23:21,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:23:21,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:23:21,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:23:21,787 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:23:21,787 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:23:21,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:23:21,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:23:21,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:23:21,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:23:21,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:23:21,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:23:21,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:23:21,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:23:21,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:23:21,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:23:21,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:23:21,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:23:21,791 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:23:21,791 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:23:21,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:23:21,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:23:21,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:23:21,792 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 -> 4ffcfb5240555d68939cfa296fd9345209c9c26c [2020-10-20 00:23:22,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:23:22,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:23:22,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:23:22,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:23:22,040 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:23:22,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c [2020-10-20 00:23:22,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf91359c/2077d2de71b34f4cb4f67303df539b65/FLAG0dc3cbb3d [2020-10-20 00:23:22,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:23:22,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c [2020-10-20 00:23:22,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf91359c/2077d2de71b34f4cb4f67303df539b65/FLAG0dc3cbb3d [2020-10-20 00:23:22,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf91359c/2077d2de71b34f4cb4f67303df539b65 [2020-10-20 00:23:22,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:23:23,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:23:23,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:23,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:23:23,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:23:23,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:22" (1/1) ... [2020-10-20 00:23:23,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa86cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23, skipping insertion in model container [2020-10-20 00:23:23,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:22" (1/1) ... [2020-10-20 00:23:23,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:23:23,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:23:23,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:23,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:23:23,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:23,371 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:23:23,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23 WrapperNode [2020-10-20 00:23:23,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:23,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:23,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:23:23,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:23:23,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:23,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:23:23,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:23:23,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:23:23,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (1/1) ... [2020-10-20 00:23:23,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:23:23,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:23:23,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:23:23,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:23:23,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (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 00:23:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:23:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:23:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:23:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:23:28,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:23:28,085 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 00:23:28,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:28 BoogieIcfgContainer [2020-10-20 00:23:28,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:23:28,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:23:28,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:23:28,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:23:28,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:23:22" (1/3) ... [2020-10-20 00:23:28,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb3612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:28, skipping insertion in model container [2020-10-20 00:23:28,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:23" (2/3) ... [2020-10-20 00:23:28,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb3612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:28, skipping insertion in model container [2020-10-20 00:23:28,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:28" (3/3) ... [2020-10-20 00:23:28,116 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c [2020-10-20 00:23:28,151 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:23:28,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:23:28,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:23:28,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:23:28,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:23:28,217 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:23:28,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:23:28,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:23:28,218 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:23:28,218 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:23:28,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:23:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:23:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:28,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:28,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:28,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:28,242 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2020-10-20 00:23:28,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:23:28,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830636662] [2020-10-20 00:23:28,253 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 00:23:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:28,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:23:28,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:28,792 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 00:23:28,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:23:28,796 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 00:23:28,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830636662] [2020-10-20 00:23:28,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:23:28,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:23:28,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369593603] [2020-10-20 00:23:28,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:23:28,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:23:28,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:23:28,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:23:28,821 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:23:28,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:23:28,838 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-20 00:23:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:23:28,840 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:23:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:23:28,850 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:23:28,850 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:23:28,854 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 00:23:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:23:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:23:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:23:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:23:28,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-10-20 00:23:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:23:28,888 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:23:28,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:23:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:23:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:28,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:28,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:29,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:23:29,105 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2020-10-20 00:23:29,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:23:29,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348817045] [2020-10-20 00:23:29,108 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 00:23:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:29,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:23:29,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:29,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348817045] [2020-10-20 00:23:29,735 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:29,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1647619155] [2020-10-20 00:23:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:23:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:31,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 00:23:31,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:31,213 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:31,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228525811] [2020-10-20 00:23:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:23:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:49,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:23:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:49,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:49,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:23:49,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:23:49,692 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:23:49,692 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:23:50,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:23:50,326 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:23:50,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:23:50 BoogieIcfgContainer [2020-10-20 00:23:50,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:23:50,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:23:50,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:23:50,328 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:23:50,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:28" (3/4) ... [2020-10-20 00:23:50,333 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:23:50,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:23:50,336 INFO L168 Benchmark]: Toolchain (without parser) took 27338.76 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 12.6 MB in the beginning and 13.6 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,337 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.79 ms. Allocated memory was 35.7 MB in the beginning and 43.5 MB in the end (delta: 7.9 MB). Free memory was 11.6 MB in the beginning and 26.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 43.5 MB. Free memory was 25.8 MB in the beginning and 24.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,340 INFO L168 Benchmark]: Boogie Preprocessor took 27.80 ms. Allocated memory is still 43.5 MB. Free memory was 24.1 MB in the beginning and 22.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,342 INFO L168 Benchmark]: RCFGBuilder took 4648.21 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 22.6 MB in the beginning and 20.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,343 INFO L168 Benchmark]: TraceAbstraction took 22235.48 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 20.0 MB in the beginning and 14.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,343 INFO L168 Benchmark]: Witness Printer took 6.02 ms. Allocated memory is still 45.6 MB. Free memory was 13.9 MB in the beginning and 13.6 MB in the end (delta: 309.1 kB). Peak memory consumption was 309.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:50,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 367.79 ms. Allocated memory was 35.7 MB in the beginning and 43.5 MB in the end (delta: 7.9 MB). Free memory was 11.6 MB in the beginning and 26.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 43.5 MB. Free memory was 25.8 MB in the beginning and 24.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.80 ms. Allocated memory is still 43.5 MB. Free memory was 24.1 MB in the beginning and 22.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 4648.21 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 22.6 MB in the beginning and 20.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 22235.48 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 20.0 MB in the beginning and 14.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Witness Printer took 6.02 ms. Allocated memory is still 45.6 MB. Free memory was 13.9 MB in the beginning and 13.6 MB in the end (delta: 309.1 kB). Peak memory consumption was 309.1 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: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L3] __assert_fail("0", "zonotope_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 22.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...