./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/interpolation2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/interpolation2.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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:17:20,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:17:20,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:17:20,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:17:20,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:17:20,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:17:20,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:17:20,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:17:20,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:17:20,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:17:20,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:17:20,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:17:20,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:17:20,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:17:20,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:17:20,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:17:20,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:17:20,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:17:20,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:17:20,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:17:20,720 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:17:20,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:17:20,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:17:20,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:17:20,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:17:20,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:17:20,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:17:20,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:17:20,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:17:20,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:17:20,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:17:20,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:17:20,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:17:20,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:17:20,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:17:20,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:17:20,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:17:20,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:17:20,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:17:20,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:17:20,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:17:20,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:17:20,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:17:20,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:17:20,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:17:20,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:17:20,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:17:20,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:17:20,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:17:20,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:17:20,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:17:20,798 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:17:20,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:17:20,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:17:20,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:17:20,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:17:20,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:17:20,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:17:20,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:17:20,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:17:20,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:17:20,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:17:20,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:17:20,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:17:20,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:17:20,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:17:20,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:17:20,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:17:20,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:17:20,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:17:20,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:17:20,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:17:20,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:17:20,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:17:20,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:17:20,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:17:20,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 [2022-07-21 01:17:21,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:17:21,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:17:21,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:17:21,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:17:21,171 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:17:21,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation2.c [2022-07-21 01:17:21,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e5a3e8a/8efff7fbeb9d4aafb84cc929a1d2c3a7/FLAG3591a94ba [2022-07-21 01:17:21,661 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:17:21,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c [2022-07-21 01:17:21,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e5a3e8a/8efff7fbeb9d4aafb84cc929a1d2c3a7/FLAG3591a94ba [2022-07-21 01:17:22,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e5a3e8a/8efff7fbeb9d4aafb84cc929a1d2c3a7 [2022-07-21 01:17:22,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:17:22,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:17:22,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:17:22,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:17:22,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:17:22,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41762373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22, skipping insertion in model container [2022-07-21 01:17:22,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:17:22,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:17:22,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2022-07-21 01:17:22,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:17:22,274 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:17:22,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2022-07-21 01:17:22,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:17:22,335 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:17:22,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22 WrapperNode [2022-07-21 01:17:22,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:17:22,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:17:22,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:17:22,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:17:22,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,382 INFO L137 Inliner]: procedures = 18, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2022-07-21 01:17:22,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:17:22,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:17:22,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:17:22,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:17:22,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:17:22,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:17:22,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:17:22,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:17:22,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (1/1) ... [2022-07-21 01:17:22,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:17:22,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:17:22,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:17:22,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:17:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 01:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:17:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-07-21 01:17:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:17:22,551 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:17:22,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:17:22,762 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:17:22,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:17:22,768 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:17:22,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:22 BoogieIcfgContainer [2022-07-21 01:17:22,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:17:22,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:17:22,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:17:22,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:17:22,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:17:22" (1/3) ... [2022-07-21 01:17:22,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7216c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:17:22, skipping insertion in model container [2022-07-21 01:17:22,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:22" (2/3) ... [2022-07-21 01:17:22,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7216c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:17:22, skipping insertion in model container [2022-07-21 01:17:22,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:22" (3/3) ... [2022-07-21 01:17:22,790 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2022-07-21 01:17:22,819 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:17:22,820 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:17:22,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:17:22,863 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3826df7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4204942d [2022-07-21 01:17:22,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:17:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:17:22,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:17:22,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:17:22,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:17:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:17:22,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2022-07-21 01:17:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:17:22,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512144448] [2022-07-21 01:17:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:17:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:17:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:17:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:17:23,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:17:23,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512144448] [2022-07-21 01:17:23,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512144448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:17:23,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:17:23,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:17:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172439094] [2022-07-21 01:17:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:17:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:17:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:17:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:17:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:17:23,104 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:17:23,125 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-07-21 01:17:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:17:23,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 01:17:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:17:23,134 INFO L225 Difference]: With dead ends: 29 [2022-07-21 01:17:23,134 INFO L226 Difference]: Without dead ends: 13 [2022-07-21 01:17:23,137 INFO L412 NwaCegarLoop]: 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 [2022-07-21 01:17:23,142 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:17:23,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:17:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-21 01:17:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-21 01:17:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-21 01:17:23,164 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-07-21 01:17:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:17:23,165 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-21 01:17:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-21 01:17:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:17:23,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:17:23,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:17:23,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:17:23,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:17:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:17:23,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2022-07-21 01:17:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:17:23,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836604087] [2022-07-21 01:17:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:17:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:17:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:17:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:17:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:17:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836604087] [2022-07-21 01:17:23,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836604087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:17:23,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:17:23,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:17:23,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719780158] [2022-07-21 01:17:23,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:17:23,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:17:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:17:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:17:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:17:23,233 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:17:23,246 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-07-21 01:17:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:17:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 01:17:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:17:23,248 INFO L225 Difference]: With dead ends: 24 [2022-07-21 01:17:23,248 INFO L226 Difference]: Without dead ends: 20 [2022-07-21 01:17:23,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:17:23,250 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:17:23,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:17:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-21 01:17:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-07-21 01:17:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-21 01:17:23,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-07-21 01:17:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:17:23,255 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-21 01:17:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-21 01:17:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:17:23,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:17:23,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:17:23,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:17:23,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:17:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:17:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2022-07-21 01:17:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:17:23,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114985214] [2022-07-21 01:17:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:17:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:17:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:17:23,290 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:17:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:17:23,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:17:23,325 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:17:23,326 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:17:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 01:17:23,331 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 01:17:23,334 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:17:23,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:17:23 BoogieIcfgContainer [2022-07-21 01:17:23,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:17:23,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:17:23,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:17:23,370 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:17:23,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:22" (3/4) ... [2022-07-21 01:17:23,373 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:17:23,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:17:23,375 INFO L158 Benchmark]: Toolchain (without parser) took 1267.96ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.9MB in the beginning and 44.5MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:17:23,376 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory is still 33.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:17:23,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.08ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.8MB in the beginning and 46.9MB in the end (delta: -17.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-21 01:17:23,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.38ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:17:23,383 INFO L158 Benchmark]: Boogie Preprocessor took 51.57ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:17:23,384 INFO L158 Benchmark]: RCFGBuilder took 346.26ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 45.7MB in the end (delta: -2.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-07-21 01:17:23,384 INFO L158 Benchmark]: TraceAbstraction took 583.45ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 45.0MB in the end (delta: 138.8kB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-07-21 01:17:23,384 INFO L158 Benchmark]: Witness Printer took 3.85ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.5MB in the end (delta: 294.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:17:23,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory is still 33.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.08ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.8MB in the beginning and 46.9MB in the end (delta: -17.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.38ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.57ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 346.26ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 45.7MB in the end (delta: -2.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 583.45ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 45.0MB in the end (delta: 138.8kB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Witness Printer took 3.85ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.5MB in the end (delta: 294.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L20] t = __VERIFIER_nondet_float() [L21] EXPR min[0] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={7:0}, max[sizeof(max) / sizeof(max[0]) - 1]=51, min={5:0}, min[0]=50, org={4:0}, slope={6:0}] [L21] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L23] i = 0 VAL [i=0, max={7:0}, min={5:0}, org={4:0}, slope={6:0}] [L23] COND TRUE i < sizeof(min) / sizeof(min[0]) [L24] EXPR max[i] VAL [i=0, max={7:0}, max[i]=49, min={5:0}, org={4:0}, slope={6:0}] [L24] COND TRUE t <= max[i] [L26] EXPR org[i] [L26] EXPR slope[i] [L26] EXPR min[i] [L26] EXPR max[i] [L26] EXPR min[i] [L26] z = org[i] + slope[i] * (t - min[i]) / (max[i] - min[i]) [L28] CALL __VERIFIER_assert(z >= -10.f && z <= 30.f) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 [2022-07-21 01:17:23,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/interpolation2.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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:17:25,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:17:25,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:17:25,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:17:25,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:17:25,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:17:25,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:17:25,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:17:25,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:17:25,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:17:25,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:17:25,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:17:25,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:17:25,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:17:25,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:17:25,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:17:25,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:17:25,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:17:25,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:17:25,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:17:25,406 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:17:25,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:17:25,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:17:25,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:17:25,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:17:25,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:17:25,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:17:25,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:17:25,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:17:25,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:17:25,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:17:25,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:17:25,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:17:25,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:17:25,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:17:25,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:17:25,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:17:25,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:17:25,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:17:25,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:17:25,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:17:25,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:17:25,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:17:25,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:17:25,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:17:25,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:17:25,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:17:25,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:17:25,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:17:25,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:17:25,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:17:25,471 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:17:25,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:17:25,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:17:25,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:17:25,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:17:25,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:17:25,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:17:25,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:17:25,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:17:25,479 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:17:25,479 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:17:25,479 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:17:25,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:17:25,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:17:25,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:17:25,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:17:25,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:17:25,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:17:25,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:17:25,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:17:25,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:17:25,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:17:25,482 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:17:25,482 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:17:25,483 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:17:25,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:17:25,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:17:25,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:17:25,484 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 [2022-07-21 01:17:25,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:17:25,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:17:25,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:17:25,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:17:25,827 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:17:25,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation2.c [2022-07-21 01:17:25,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6e3f576/407902ef884d4a56a11d7a7fdcb4de94/FLAG13e9cd4f0 [2022-07-21 01:17:26,332 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:17:26,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c [2022-07-21 01:17:26,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6e3f576/407902ef884d4a56a11d7a7fdcb4de94/FLAG13e9cd4f0 [2022-07-21 01:17:26,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6e3f576/407902ef884d4a56a11d7a7fdcb4de94 [2022-07-21 01:17:26,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:17:26,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:17:26,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:17:26,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:17:26,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:17:26,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:26,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a78346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26, skipping insertion in model container [2022-07-21 01:17:26,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:26,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:17:26,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:17:26,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2022-07-21 01:17:26,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:17:26,887 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:17:26,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2022-07-21 01:17:26,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:17:26,962 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:17:26,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26 WrapperNode [2022-07-21 01:17:26,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:17:26,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:17:26,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:17:26,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:17:26,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:26,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:26,997 INFO L137 Inliner]: procedures = 19, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2022-07-21 01:17:26,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:17:26,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:17:26,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:17:26,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:17:27,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:17:27,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:17:27,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:17:27,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:17:27,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (1/1) ... [2022-07-21 01:17:27,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:17:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:17:27,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:17:27,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:17:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:17:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-07-21 01:17:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:17:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:17:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-07-21 01:17:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:17:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:17:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:17:27,212 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:17:27,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:17:29,615 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:17:29,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:17:29,619 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:17:29,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:29 BoogieIcfgContainer [2022-07-21 01:17:29,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:17:29,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:17:29,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:17:29,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:17:29,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:17:26" (1/3) ... [2022-07-21 01:17:29,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56edfe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:17:29, skipping insertion in model container [2022-07-21 01:17:29,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:26" (2/3) ... [2022-07-21 01:17:29,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56edfe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:17:29, skipping insertion in model container [2022-07-21 01:17:29,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:29" (3/3) ... [2022-07-21 01:17:29,631 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2022-07-21 01:17:29,647 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:17:29,648 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:17:29,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:17:29,699 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2dbe462b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@54e66d81 [2022-07-21 01:17:29,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:17:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:17:29,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:17:29,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:17:29,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:17:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:17:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2022-07-21 01:17:29,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:17:29,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803069834] [2022-07-21 01:17:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:17:29,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:17:29,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:17:29,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:17:29,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:17:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:17:30,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:17:30,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:17:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:17:30,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:17:30,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:17:30,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803069834] [2022-07-21 01:17:30,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803069834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:17:30,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:17:30,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:17:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697127414] [2022-07-21 01:17:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:17:30,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:17:30,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:17:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:17:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:17:30,321 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:17:30,353 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-07-21 01:17:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:17:30,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 01:17:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:17:30,362 INFO L225 Difference]: With dead ends: 29 [2022-07-21 01:17:30,363 INFO L226 Difference]: Without dead ends: 13 [2022-07-21 01:17:30,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:17:30,371 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:17:30,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:17:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-21 01:17:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-21 01:17:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-21 01:17:30,405 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-07-21 01:17:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:17:30,406 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-21 01:17:30,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-21 01:17:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:17:30,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:17:30,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:17:30,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:17:30,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:17:30,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:17:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:17:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2022-07-21 01:17:30,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:17:30,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117045395] [2022-07-21 01:17:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:17:30,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:17:30,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:17:30,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:17:30,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:17:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:17:31,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 01:17:31,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:17:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:17:31,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:17:31,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:17:31,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117045395] [2022-07-21 01:17:31,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117045395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:17:31,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:17:31,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:17:31,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812252299] [2022-07-21 01:17:31,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:17:31,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:17:31,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:17:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:17:31,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:17:31,086 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:33,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:17:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:17:33,426 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-07-21 01:17:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:17:33,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 01:17:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:17:33,428 INFO L225 Difference]: With dead ends: 21 [2022-07-21 01:17:33,428 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 01:17:33,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:17:33,429 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 01:17:33,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 01:17:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 01:17:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2022-07-21 01:17:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-21 01:17:33,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-07-21 01:17:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:17:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-21 01:17:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:17:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-21 01:17:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:17:33,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:17:33,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:17:33,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:17:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:17:33,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:17:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:17:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2022-07-21 01:17:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:17:33,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660205483] [2022-07-21 01:17:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:17:33,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:17:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:17:33,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:17:33,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:17:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:17:34,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 01:17:34,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:17:42,015 INFO L356 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2022-07-21 01:17:42,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 612 treesize of output 312