./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1130a.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 07cf728e594e227dafc07e33770c9952635c513c ................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1130a.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 07cf728e594e227dafc07e33770c9952635c513c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:47:52,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:47:52,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:47:52,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:47:52,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:47:52,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:47:52,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:47:52,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:47:52,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:47:52,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:47:52,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:47:52,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:47:52,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:47:52,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:47:52,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:47:52,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:47:52,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:47:52,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:47:52,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:47:52,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:47:52,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:47:52,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:47:52,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:47:52,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:47:52,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:47:52,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:47:52,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:47:52,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:47:52,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:47:52,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:47:52,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:47:52,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:47:52,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:47:52,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:47:52,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:47:52,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:47:52,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:47:52,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:47:52,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:47:52,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:47:52,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:47:52,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 08:47:52,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:47:52,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:47:52,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:47:52,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:47:52,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:47:52,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:47:52,681 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:47:52,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:47:52,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:47:52,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 08:47:52,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:47:52,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:47:52,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:47:52,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:47:52,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:47:52,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:47:52,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:47:52,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:47:52,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:47:52,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:47:52,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 08:47:52,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 08:47:52,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:47:52,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:47:52,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07cf728e594e227dafc07e33770c9952635c513c [2021-08-29 08:47:52,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:47:53,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:47:53,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:47:53,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:47:53,023 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:47:53,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1130a.c [2021-08-29 08:47:53,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55b21429/f9e3fbbbb0ba4498b96c7aef9b451e3a/FLAG87bbda551 [2021-08-29 08:47:53,463 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:47:53,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1130a.c [2021-08-29 08:47:53,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55b21429/f9e3fbbbb0ba4498b96c7aef9b451e3a/FLAG87bbda551 [2021-08-29 08:47:53,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55b21429/f9e3fbbbb0ba4498b96c7aef9b451e3a [2021-08-29 08:47:53,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:47:53,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:47:53,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:47:53,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:47:53,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:47:53,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13cf54eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53, skipping insertion in model container [2021-08-29 08:47:53,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:47:53,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:47:53,628 WARN L228 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-newlib/float_req_bl_1130a.c[2907,2920] [2021-08-29 08:47:53,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:47:53,658 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:47:53,700 WARN L228 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-newlib/float_req_bl_1130a.c[2907,2920] [2021-08-29 08:47:53,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:47:53,709 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:47:53,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53 WrapperNode [2021-08-29 08:47:53,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:47:53,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:47:53,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:47:53,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:47:53,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:47:53,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:47:53,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:47:53,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:47:53,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:47:53,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:47:53,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:47:53,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:47:53,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (1/1) ... [2021-08-29 08:47:53,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:47:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:47:53,779 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) [2021-08-29 08:47:53,788 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 [2021-08-29 08:47:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 08:47:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:47:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 08:47:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-29 08:47:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-29 08:47:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:47:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 08:47:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-08-29 08:47:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:47:54,144 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:47:54,144 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-29 08:47:54,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:47:54 BoogieIcfgContainer [2021-08-29 08:47:54,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:47:54,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:47:54,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:47:54,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:47:54,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:47:53" (1/3) ... [2021-08-29 08:47:54,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ceeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:47:54, skipping insertion in model container [2021-08-29 08:47:54,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:53" (2/3) ... [2021-08-29 08:47:54,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ceeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:47:54, skipping insertion in model container [2021-08-29 08:47:54,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:47:54" (3/3) ... [2021-08-29 08:47:54,157 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-08-29 08:47:54,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:47:54,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:47:54,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:47:54,207 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 08:47:54,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:47:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 47 states have internal predecessors, (80), 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) [2021-08-29 08:47:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:47:54,232 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:47:54,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:47:54,233 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:47:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:47:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 461941989, now seen corresponding path program 1 times [2021-08-29 08:47:54,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:47:54,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696726420] [2021-08-29 08:47:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:47:54,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:47:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:47:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:47:54,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:47:54,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696726420] [2021-08-29 08:47:54,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696726420] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:47:54,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:47:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 08:47:54,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261537475] [2021-08-29 08:47:54,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:47:54,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:47:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:47:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:47:54,424 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 47 states have internal predecessors, (80), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-08-29 08:47:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:47:54,542 INFO L93 Difference]: Finished difference Result 93 states and 156 transitions. [2021-08-29 08:47:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:47:54,545 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-08-29 08:47:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:47:54,551 INFO L225 Difference]: With dead ends: 93 [2021-08-29 08:47:54,551 INFO L226 Difference]: Without dead ends: 44 [2021-08-29 08:47:54,554 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:47:54,557 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.63ms IncrementalHoareTripleChecker+Time [2021-08-29 08:47:54,558 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 96.63ms Time] [2021-08-29 08:47:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-29 08:47:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-08-29 08:47:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 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) [2021-08-29 08:47:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-08-29 08:47:54,587 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 11 [2021-08-29 08:47:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:47:54,587 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-08-29 08:47:54,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-08-29 08:47:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2021-08-29 08:47:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 08:47:54,588 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:47:54,589 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:47:54,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 08:47:54,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:47:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:47:54,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1049045826, now seen corresponding path program 1 times [2021-08-29 08:47:54,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:47:54,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20260674] [2021-08-29 08:47:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:47:54,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:47:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:47:54,674 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:47:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:47:54,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 08:47:54,748 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:47:54,749 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:47:54,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 08:47:54,757 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:47:54,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:47:54 BoogieIcfgContainer [2021-08-29 08:47:54,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:47:54,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:47:54,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:47:54,793 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:47:54,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:47:54" (3/4) ... [2021-08-29 08:47:54,795 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:47:54,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:47:54,797 INFO L158 Benchmark]: Toolchain (without parser) took 1306.96ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 35.4MB in the beginning and 42.3MB in the end (delta: -6.9MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-08-29 08:47:54,797 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:47:54,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.59ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 38.2MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:47:54,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.20ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 36.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:47:54,801 INFO L158 Benchmark]: Boogie Preprocessor took 20.65ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 34.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:47:54,802 INFO L158 Benchmark]: RCFGBuilder took 388.70ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 34.4MB in the beginning and 54.9MB in the end (delta: -20.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2021-08-29 08:47:54,802 INFO L158 Benchmark]: TraceAbstraction took 645.66ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 42.5MB in the end (delta: 12.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-08-29 08:47:54,802 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 42.3MB in the end (delta: 251.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:47:54,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.59ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 38.2MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.20ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 36.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.65ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 34.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 388.70ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 34.4MB in the beginning and 54.9MB in the end (delta: -20.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 645.66ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 42.5MB in the end (delta: 12.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 42.3MB in the end (delta: 251.6kB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 137]: 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={6:0}] [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={6:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={6:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={6:0}] [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, Zero_fmod={6:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] reach_error() VAL [one_fmod=1, Zero_fmod={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 554.05ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.33ms, AutomataDifference: 159.87ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.91ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 96.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 74.60ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 65 mSolverCounterSat, 0.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 19.13ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.75ms SsaConstructionTime, 92.34ms SatisfiabilityAnalysisTime, 69.01ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-29 08:47:54,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:47:56,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:47:56,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:47:56,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-29 08:47:56,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:47:56,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:47:56,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:47:56,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:47:56,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:47:56,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:47:56,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:47:56,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:47:56,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:47:56,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:47:56,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:47:56,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:47:56,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:47:56,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:47:56,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:47:56,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:47:56,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 08:47:56,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:47:56,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:47:56,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:47:56,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:47:56,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:47:56,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:47:56,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 08:47:56,866 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:47:56,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:47:56,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:47:56,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:47:56,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 08:47:56,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07cf728e594e227dafc07e33770c9952635c513c [2021-08-29 08:47:57,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:47:57,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:47:57,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:47:57,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:47:57,246 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:47:57,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1130a.c [2021-08-29 08:47:57,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e8d9ef2/6c9a4612972d416191bc876dae7792dc/FLAGe4adfaab7 [2021-08-29 08:47:57,594 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:47:57,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1130a.c [2021-08-29 08:47:57,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e8d9ef2/6c9a4612972d416191bc876dae7792dc/FLAGe4adfaab7 [2021-08-29 08:47:58,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e8d9ef2/6c9a4612972d416191bc876dae7792dc [2021-08-29 08:47:58,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:47:58,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:47:58,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:47:58,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:47:58,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:47:58,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22203dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58, skipping insertion in model container [2021-08-29 08:47:58,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:47:58,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:47:58,196 WARN L228 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-newlib/float_req_bl_1130a.c[2907,2920] [2021-08-29 08:47:58,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:47:58,236 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:47:58,260 WARN L228 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-newlib/float_req_bl_1130a.c[2907,2920] [2021-08-29 08:47:58,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:47:58,280 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:47:58,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58 WrapperNode [2021-08-29 08:47:58,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:47:58,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:47:58,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:47:58,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:47:58,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:47:58,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:47:58,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:47:58,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:47:58,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:47:58,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:47:58,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:47:58,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:47:58,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (1/1) ... [2021-08-29 08:47:58,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:47:58,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:47:58,458 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) [2021-08-29 08:47:58,461 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 [2021-08-29 08:47:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-08-29 08:47:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 08:47:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:47:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-08-29 08:47:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 08:47:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:47:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:47:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-29 08:47:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-29 08:47:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:47:58,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:47:58,692 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-29 08:47:58,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:47:58 BoogieIcfgContainer [2021-08-29 08:47:58,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:47:58,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:47:58,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:47:58,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:47:58,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:47:58" (1/3) ... [2021-08-29 08:47:58,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2ae7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:47:58, skipping insertion in model container [2021-08-29 08:47:58,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:47:58" (2/3) ... [2021-08-29 08:47:58,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2ae7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:47:58, skipping insertion in model container [2021-08-29 08:47:58,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:47:58" (3/3) ... [2021-08-29 08:47:58,699 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-08-29 08:47:58,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:47:58,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:47:58,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:47:58,738 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 08:47:58,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:47:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 47 states have internal predecessors, (80), 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) [2021-08-29 08:47:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:47:58,752 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:47:58,752 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:47:58,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:47:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:47:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash 461941989, now seen corresponding path program 1 times [2021-08-29 08:47:58,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:47:58,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335122813] [2021-08-29 08:47:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:47:58,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:47:58,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:47:58,805 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) [2021-08-29 08:47:58,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 08:47:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:47:59,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 08:47:59,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:47:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:47:59,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:47:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:47:59,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:47:59,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335122813] [2021-08-29 08:47:59,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335122813] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:47:59,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:47:59,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 08:47:59,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918797702] [2021-08-29 08:47:59,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:47:59,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:47:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:47:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:47:59,232 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 47 states have internal predecessors, (80), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-08-29 08:48:01,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:48:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:01,638 INFO L93 Difference]: Finished difference Result 93 states and 156 transitions. [2021-08-29 08:48:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:48:01,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-08-29 08:48:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:01,646 INFO L225 Difference]: With dead ends: 93 [2021-08-29 08:48:01,653 INFO L226 Difference]: Without dead ends: 44 [2021-08-29 08:48:01,655 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:48:01,658 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2299.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2386.21ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:01,674 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 2386.21ms Time] [2021-08-29 08:48:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-29 08:48:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-08-29 08:48:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 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) [2021-08-29 08:48:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-08-29 08:48:01,738 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 11 [2021-08-29 08:48:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:01,738 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-08-29 08:48:01,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-08-29 08:48:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2021-08-29 08:48:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 08:48:01,741 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:48:01,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:48:01,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-29 08:48:01,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:01,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:48:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:48:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1049045826, now seen corresponding path program 1 times [2021-08-29 08:48:01,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:48:01,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545772452] [2021-08-29 08:48:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:48:01,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:48:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:48:01,960 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) [2021-08-29 08:48:02,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 08:48:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:48:02,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-29 08:48:02,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:48:02,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-08-29 08:48:02,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-08-29 08:48:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:02,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:48:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:03,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:48:03,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545772452] [2021-08-29 08:48:03,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545772452] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:48:03,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:48:03,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-08-29 08:48:03,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110384634] [2021-08-29 08:48:03,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 08:48:03,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:48:03,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 08:48:03,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-29 08:48:03,506 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-08-29 08:48:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:04,180 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2021-08-29 08:48:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 08:48:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 13 [2021-08-29 08:48:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:04,182 INFO L225 Difference]: With dead ends: 53 [2021-08-29 08:48:04,182 INFO L226 Difference]: Without dead ends: 44 [2021-08-29 08:48:04,182 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 567.01ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-08-29 08:48:04,183 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 528.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 562.67ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:04,183 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 275 Unchecked, 562.67ms Time] [2021-08-29 08:48:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-29 08:48:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-08-29 08:48:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 states have internal predecessors, (59), 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) [2021-08-29 08:48:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2021-08-29 08:48:04,187 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 13 [2021-08-29 08:48:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:04,187 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2021-08-29 08:48:04,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-08-29 08:48:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2021-08-29 08:48:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 08:48:04,188 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:48:04,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:48:04,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-29 08:48:04,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:04,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:48:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:48:04,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1911951893, now seen corresponding path program 1 times [2021-08-29 08:48:04,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:48:04,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719924896] [2021-08-29 08:48:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:48:04,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:48:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:48:04,392 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) [2021-08-29 08:48:04,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 08:48:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:48:04,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 08:48:04,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:48:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:04,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:48:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:04,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:48:04,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719924896] [2021-08-29 08:48:04,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719924896] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:48:04,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:48:04,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-08-29 08:48:04,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578646618] [2021-08-29 08:48:04,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 08:48:04,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:48:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 08:48:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 08:48:04,733 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-08-29 08:48:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:05,776 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2021-08-29 08:48:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 08:48:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 14 [2021-08-29 08:48:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:05,778 INFO L225 Difference]: With dead ends: 65 [2021-08-29 08:48:05,778 INFO L226 Difference]: Without dead ends: 62 [2021-08-29 08:48:05,779 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 264.36ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-08-29 08:48:05,779 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 846.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 893.66ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:05,780 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 196 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 893.66ms Time] [2021-08-29 08:48:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-29 08:48:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2021-08-29 08:48:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 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) [2021-08-29 08:48:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2021-08-29 08:48:05,784 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 14 [2021-08-29 08:48:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:05,784 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2021-08-29 08:48:05,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-08-29 08:48:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2021-08-29 08:48:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 08:48:05,784 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:48:05,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:48:05,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 08:48:05,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:05,985 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:48:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:48:05,986 INFO L82 PathProgramCache]: Analyzing trace with hash 791016935, now seen corresponding path program 1 times [2021-08-29 08:48:05,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:48:05,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926231376] [2021-08-29 08:48:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:48:05,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:48:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:48:05,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:48:05,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 08:48:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:48:06,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 08:48:06,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:48:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:06,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:48:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:06,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:48:06,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926231376] [2021-08-29 08:48:06,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926231376] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:48:06,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:48:06,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-08-29 08:48:06,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977184514] [2021-08-29 08:48:06,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 08:48:06,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:48:06,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 08:48:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-29 08:48:06,780 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-08-29 08:48:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:07,655 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2021-08-29 08:48:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 08:48:07,655 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 15 [2021-08-29 08:48:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:07,656 INFO L225 Difference]: With dead ends: 64 [2021-08-29 08:48:07,656 INFO L226 Difference]: Without dead ends: 55 [2021-08-29 08:48:07,656 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 393.93ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-29 08:48:07,657 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 738.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 787.60ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:07,657 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 235 Unchecked, 787.60ms Time] [2021-08-29 08:48:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-29 08:48:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2021-08-29 08:48:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 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) [2021-08-29 08:48:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2021-08-29 08:48:07,664 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 15 [2021-08-29 08:48:07,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:07,664 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2021-08-29 08:48:07,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-08-29 08:48:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2021-08-29 08:48:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 08:48:07,665 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:48:07,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:48:07,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 08:48:07,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:07,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:48:07,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:48:07,867 INFO L82 PathProgramCache]: Analyzing trace with hash -645654976, now seen corresponding path program 1 times [2021-08-29 08:48:07,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:48:07,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952377243] [2021-08-29 08:48:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:48:07,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:48:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:48:07,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:48:07,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-29 08:48:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:48:07,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-29 08:48:07,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:48:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:08,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:48:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:08,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:48:08,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952377243] [2021-08-29 08:48:08,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952377243] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:48:08,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:48:08,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-08-29 08:48:08,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341787736] [2021-08-29 08:48:08,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-29 08:48:08,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:48:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-29 08:48:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-08-29 08:48:08,714 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2021-08-29 08:48:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:10,335 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2021-08-29 08:48:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 08:48:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 18 [2021-08-29 08:48:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:10,337 INFO L225 Difference]: With dead ends: 62 [2021-08-29 08:48:10,337 INFO L226 Difference]: Without dead ends: 53 [2021-08-29 08:48:10,337 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 817.44ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-08-29 08:48:10,338 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1193.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.83ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 1250.03ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:10,338 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 567 Unknown, 0 Unchecked, 2.83ms Time], IncrementalHoareTripleChecker [10 Valid, 362 Invalid, 0 Unknown, 195 Unchecked, 1250.03ms Time] [2021-08-29 08:48:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-29 08:48:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-08-29 08:48:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 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) [2021-08-29 08:48:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2021-08-29 08:48:10,342 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 18 [2021-08-29 08:48:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:10,342 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2021-08-29 08:48:10,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2021-08-29 08:48:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2021-08-29 08:48:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 08:48:10,349 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:48:10,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:48:10,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-29 08:48:10,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:10,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:48:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:48:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1896589553, now seen corresponding path program 1 times [2021-08-29 08:48:10,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:48:10,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860000218] [2021-08-29 08:48:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:48:10,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:48:10,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:48:10,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:48:10,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-29 08:48:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:48:10,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 08:48:10,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:48:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:10,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:48:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:10,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:48:10,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860000218] [2021-08-29 08:48:10,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860000218] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:48:10,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:48:10,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2021-08-29 08:48:10,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827892215] [2021-08-29 08:48:10,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 08:48:10,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:48:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 08:48:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-29 08:48:10,979 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2021-08-29 08:48:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:11,539 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2021-08-29 08:48:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 08:48:11,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 24 [2021-08-29 08:48:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:11,540 INFO L225 Difference]: With dead ends: 92 [2021-08-29 08:48:11,541 INFO L226 Difference]: Without dead ends: 62 [2021-08-29 08:48:11,541 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 189.37ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-29 08:48:11,541 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 460.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 496.46ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:11,542 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 310 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 147 Unchecked, 496.46ms Time] [2021-08-29 08:48:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-29 08:48:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2021-08-29 08:48:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 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) [2021-08-29 08:48:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2021-08-29 08:48:11,548 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 24 [2021-08-29 08:48:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:11,548 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2021-08-29 08:48:11,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2021-08-29 08:48:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2021-08-29 08:48:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 08:48:11,549 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:48:11,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:48:11,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-29 08:48:11,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:11,761 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:48:11,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:48:11,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1844332961, now seen corresponding path program 1 times [2021-08-29 08:48:11,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:48:11,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935953969] [2021-08-29 08:48:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:48:11,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:48:11,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:48:11,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:48:11,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-29 08:48:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:48:11,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-29 08:48:11,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:48:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:12,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:48:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:48:13,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:48:13,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935953969] [2021-08-29 08:48:13,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935953969] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:48:13,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:48:13,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 12] imperfect sequences [] total 17 [2021-08-29 08:48:13,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665080323] [2021-08-29 08:48:13,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-29 08:48:13,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:48:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-29 08:48:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-08-29 08:48:13,777 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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) [2021-08-29 08:48:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:48:14,089 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2021-08-29 08:48:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 08:48:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 25 [2021-08-29 08:48:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:48:14,090 INFO L225 Difference]: With dead ends: 52 [2021-08-29 08:48:14,090 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 08:48:14,091 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1136.14ms TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-08-29 08:48:14,091 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 182.63ms IncrementalHoareTripleChecker+Time [2021-08-29 08:48:14,092 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 23 Unchecked, 182.63ms Time] [2021-08-29 08:48:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 08:48:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 08:48:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-29 08:48:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 08:48:14,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-08-29 08:48:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:48:14,093 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 08:48:14,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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) [2021-08-29 08:48:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 08:48:14,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 08:48:14,095 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:48:14,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-29 08:48:14,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:48:14,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 08:48:14,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:48:14,542 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 31) no Hoare annotation was computed. [2021-08-29 08:48:14,542 INFO L858 garLoopResultBuilder]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2021-08-29 08:48:14,543 INFO L858 garLoopResultBuilder]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2021-08-29 08:48:14,543 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2021-08-29 08:48:14,543 INFO L854 garLoopResultBuilder]: At program point L118(lines 109 119) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_float_#res| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short19| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0))) (= ULTIMATE.start_fmod_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))) [2021-08-29 08:48:14,543 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-08-29 08:48:14,543 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L854 garLoopResultBuilder]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L136-2(lines 136 139) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 112 116) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L854 garLoopResultBuilder]: At program point L112-2(lines 112 116) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_float_#res| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short19| (= ULTIMATE.start_fmod_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x)) [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L112-3(lines 112 116) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-08-29 08:48:14,544 INFO L858 garLoopResultBuilder]: For program point L88(lines 88 105) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmod_float_~x (_ +zero 8 24)) (or (fp.gt ULTIMATE.start_fmod_float_~y (_ +zero 8 24)) (fp.lt ULTIMATE.start_fmod_float_~y (_ +zero 8 24))) (= ULTIMATE.start_main_~x~0 (_ +zero 8 24))) [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 73) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L48(lines 19 107) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L854 garLoopResultBuilder]: At program point L106(lines 19 107) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_float_#res| (_ +zero 8 24)) (= ULTIMATE.start_fmod_float_~x (_ +zero 8 24)) (= ULTIMATE.start_main_~x~0 (_ +zero 8 24))) [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L131(lines 131 140) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L131-2(lines 131 140) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L854 garLoopResultBuilder]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 137) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L854 garLoopResultBuilder]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L854 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2021-08-29 08:48:14,545 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-08-29 08:48:14,546 INFO L858 garLoopResultBuilder]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2021-08-29 08:48:14,546 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2021-08-29 08:48:14,546 INFO L858 garLoopResultBuilder]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2021-08-29 08:48:14,546 INFO L854 garLoopResultBuilder]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2021-08-29 08:48:14,546 INFO L858 garLoopResultBuilder]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2021-08-29 08:48:14,546 INFO L861 garLoopResultBuilder]: At program point L142(lines 121 143) the Hoare annotation is: true [2021-08-29 08:48:14,546 INFO L858 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-08-29 08:48:14,546 INFO L854 garLoopResultBuilder]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2021-08-29 08:48:14,549 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:48:14,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:48:14 BoogieIcfgContainer [2021-08-29 08:48:14,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:48:14,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:48:14,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:48:14,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:48:14,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:47:58" (3/4) ... [2021-08-29 08:48:14,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 08:48:14,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 08:48:14,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 08:48:14,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 08:48:14,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 08:48:14,613 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 08:48:14,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:48:14,615 INFO L158 Benchmark]: Toolchain (without parser) took 16593.26ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 45.7MB in the beginning and 38.3MB in the end (delta: 7.4MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,615 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.4MB in the beginning and 47.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:48:14,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.41ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 46.2MB in the end (delta: -497.8kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.34ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 44.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,616 INFO L158 Benchmark]: Boogie Preprocessor took 38.30ms. Allocated memory is still 65.0MB. Free memory was 44.0MB in the beginning and 42.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,617 INFO L158 Benchmark]: RCFGBuilder took 295.62ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 42.1MB in the beginning and 63.9MB in the end (delta: -21.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,617 INFO L158 Benchmark]: TraceAbstraction took 15873.24ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 41.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,617 INFO L158 Benchmark]: Witness Printer took 45.84ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 38.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:48:14,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.4MB in the beginning and 47.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.41ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 46.2MB in the end (delta: -497.8kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.34ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 44.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.30ms. Allocated memory is still 65.0MB. Free memory was 44.0MB in the beginning and 42.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.62ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 42.1MB in the beginning and 63.9MB in the end (delta: -21.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15873.24ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 41.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Witness Printer took 45.84ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 38.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 137]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15816.19ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 16.50ms, AutomataDifference: 7574.60ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 245.90ms, InitialAbstractionConstructionTime: 6.73ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 6559.26ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 521 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6240.36ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 875 IncrementalHoareTripleChecker+Unchecked, 1251 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1142 IncrementalHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 0 mSDtfsCounter, 1142 mSolverCounterSat, 17.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 3368.33ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 70.41ms AutomataMinimizationTime, 7 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 77 HoareAnnotationTreeSize, 11 FomulaSimplifications, 120 FormulaSimplificationTreeSizeReduction, 71.49ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 168.45ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.86ms SsaConstructionTime, 432.14ms SatisfiabilityAnalysisTime, 5545.63ms InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 226 ConstructedInterpolants, 38 QuantifiedInterpolants, 1777 SizeOfPredicates, 47 NumberOfNonLiveVariables, 510 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && (~fp.gt~FLOAT(y, ~Pluszero~LONGDOUBLE()) || ~fp.lt~FLOAT(y, ~Pluszero~LONGDOUBLE()))) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: ((((((\result == ~Pluszero~LONGDOUBLE() && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32 - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: ((((\result == ~Pluszero~LONGDOUBLE() && aux-res == 0.0f && __signbit_float(res) == 0-aux) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (\result == ~Pluszero~LONGDOUBLE() && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() RESULT: Ultimate proved your program to be correct! [2021-08-29 08:48:14,695 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...