./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0682b.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 04255db23fa2b33ef965cf216e618982ce4f05405d3eba07d1c5e94169a40ce3 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:22:49,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:22:49,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:22:49,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:22:49,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:22:49,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:22:49,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:22:49,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:22:49,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:22:49,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:22:49,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:22:49,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:22:49,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:22:49,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:22:49,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:22:49,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:22:49,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:22:49,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:22:49,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:22:49,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:22:49,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:22:49,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:22:49,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:22:49,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:22:49,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:22:49,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:22:49,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:22:49,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:22:49,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:22:49,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:22:49,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:22:49,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:22:49,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:22:49,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:22:49,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:22:49,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:22:49,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:22:49,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:22:49,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:22:49,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:22:49,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:22:49,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:22:49,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:22:49,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:22:49,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:22:49,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:22:49,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:22:49,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:22:49,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:22:49,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:22:49,619 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:22:49,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:22:49,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:22:49,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:22:49,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:22:49,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:22:49,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:22:49,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:22:49,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:22:49,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:22:49,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:22:49,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:22:49,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:22:49,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:22:49,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:22:49,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:22:49,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:22:49,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:22:49,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:22:49,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:22:49,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:22:49,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:22:49,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:22:49,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:22:49,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:22:49,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:22:49,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04255db23fa2b33ef965cf216e618982ce4f05405d3eba07d1c5e94169a40ce3 [2021-12-14 13:22:49,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:22:49,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:22:49,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:22:49,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:22:49,836 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:22:49,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-12-14 13:22:49,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89dd60c8b/ebe598d297174811898c521facee151d/FLAG1e0b4cebe [2021-12-14 13:22:50,284 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:22:50,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-12-14 13:22:50,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89dd60c8b/ebe598d297174811898c521facee151d/FLAG1e0b4cebe [2021-12-14 13:22:50,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89dd60c8b/ebe598d297174811898c521facee151d [2021-12-14 13:22:50,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:22:50,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:22:50,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:22:50,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:22:50,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:22:50,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbe908a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50, skipping insertion in model container [2021-12-14 13:22:50,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:22:50,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:22:50,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-12-14 13:22:50,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:22:50,577 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:22:50,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-12-14 13:22:50,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:22:50,632 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:22:50,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50 WrapperNode [2021-12-14 13:22:50,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:22:50,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:22:50,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:22:50,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:22:50,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,704 INFO L137 Inliner]: procedures = 21, calls = 98, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 277 [2021-12-14 13:22:50,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:22:50,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:22:50,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:22:50,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:22:50,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:22:50,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:22:50,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:22:50,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:22:50,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (1/1) ... [2021-12-14 13:22:50,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:22:50,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:22:50,784 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) [2021-12-14 13:22:50,786 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 [2021-12-14 13:22:50,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:22:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:22:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:22:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 13:22:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 13:22:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-14 13:22:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-14 13:22:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-14 13:22:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-14 13:22:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-14 13:22:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:22:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:22:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 13:22:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-14 13:22:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:22:50,922 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:22:50,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:22:51,297 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:22:51,303 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:22:51,303 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-14 13:22:51,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:22:51 BoogieIcfgContainer [2021-12-14 13:22:51,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:22:51,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:22:51,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:22:51,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:22:51,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:22:50" (1/3) ... [2021-12-14 13:22:51,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5789cd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:22:51, skipping insertion in model container [2021-12-14 13:22:51,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:50" (2/3) ... [2021-12-14 13:22:51,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5789cd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:22:51, skipping insertion in model container [2021-12-14 13:22:51,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:22:51" (3/3) ... [2021-12-14 13:22:51,312 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2021-12-14 13:22:51,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:22:51,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:22:51,350 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:22:51,355 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:22:51,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:22:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:22:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 13:22:51,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:22:51,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:22:51,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:22:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:22:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash -233161701, now seen corresponding path program 1 times [2021-12-14 13:22:51,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:22:51,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007715810] [2021-12-14 13:22:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:22:51,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:22:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:22:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:22:51,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:22:51,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007715810] [2021-12-14 13:22:51,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007715810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:22:51,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:22:51,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:22:51,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392498472] [2021-12-14 13:22:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:22:51,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:22:51,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:22:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:22:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:22:51,589 INFO L87 Difference]: Start difference. First operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:22:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:22:51,618 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2021-12-14 13:22:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:22:51,621 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-14 13:22:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:22:51,628 INFO L225 Difference]: With dead ends: 204 [2021-12-14 13:22:51,628 INFO L226 Difference]: Without dead ends: 99 [2021-12-14 13:22:51,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:22:51,634 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:22:51,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:22:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-14 13:22:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-14 13:22:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:22:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2021-12-14 13:22:51,673 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 15 [2021-12-14 13:22:51,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:22:51,673 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2021-12-14 13:22:51,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:22:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2021-12-14 13:22:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 13:22:51,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:22:51,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:22:51,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:22:51,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:22:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:22:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash -114752879, now seen corresponding path program 1 times [2021-12-14 13:22:51,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:22:51,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113472580] [2021-12-14 13:22:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:22:51,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:22:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:22:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:22:51,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:22:51,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113472580] [2021-12-14 13:22:51,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113472580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:22:51,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:22:51,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:22:51,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792522818] [2021-12-14 13:22:51,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:22:51,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 13:22:51,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:22:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 13:22:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:22:51,756 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-14 13:22:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:22:51,793 INFO L93 Difference]: Finished difference Result 187 states and 266 transitions. [2021-12-14 13:22:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 13:22:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 [2021-12-14 13:22:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:22:51,796 INFO L225 Difference]: With dead ends: 187 [2021-12-14 13:22:51,796 INFO L226 Difference]: Without dead ends: 99 [2021-12-14 13:22:51,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:22:51,798 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:22:51,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:22:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-14 13:22:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-14 13:22:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:22:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2021-12-14 13:22:51,814 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 18 [2021-12-14 13:22:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:22:51,815 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2021-12-14 13:22:51,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-14 13:22:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2021-12-14 13:22:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 13:22:51,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:22:51,818 INFO L514 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] [2021-12-14 13:22:51,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 13:22:51,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:22:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:22:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2086328612, now seen corresponding path program 1 times [2021-12-14 13:22:51,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:22:51,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014672844] [2021-12-14 13:22:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:22:51,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:22:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:22:51,965 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:22:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:22:52,088 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:22:52,089 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:22:52,090 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:22:52,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 13:22:52,094 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-14 13:22:52,096 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:22:52,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:22:52 BoogieIcfgContainer [2021-12-14 13:22:52,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:22:52,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:22:52,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:22:52,163 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:22:52,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:22:51" (3/4) ... [2021-12-14 13:22:52,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:22:52,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:22:52,166 INFO L158 Benchmark]: Toolchain (without parser) took 1858.95ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 59.3MB in the beginning and 75.8MB in the end (delta: -16.5MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-12-14 13:22:52,166 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:22:52,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.20ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 96.3MB in the end (delta: -37.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:22:52,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.89ms. Allocated memory is still 125.8MB. Free memory was 96.3MB in the beginning and 93.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:22:52,177 INFO L158 Benchmark]: Boogie Preprocessor took 44.76ms. Allocated memory is still 125.8MB. Free memory was 93.6MB in the beginning and 91.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:22:52,178 INFO L158 Benchmark]: RCFGBuilder took 551.09ms. Allocated memory is still 125.8MB. Free memory was 91.1MB in the beginning and 99.2MB in the end (delta: -8.1MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2021-12-14 13:22:52,178 INFO L158 Benchmark]: TraceAbstraction took 855.03ms. Allocated memory is still 125.8MB. Free memory was 99.2MB in the beginning and 75.8MB in the end (delta: 23.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-12-14 13:22:52,178 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 125.8MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:22:52,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.20ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 96.3MB in the end (delta: -37.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.89ms. Allocated memory is still 125.8MB. Free memory was 96.3MB in the beginning and 93.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.76ms. Allocated memory is still 125.8MB. Free memory was 93.6MB in the beginning and 91.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 551.09ms. Allocated memory is still 125.8MB. Free memory was 91.1MB in the beginning and 99.2MB in the end (delta: -8.1MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * TraceAbstraction took 855.03ms. Allocated memory is still 125.8MB. Free memory was 99.2MB in the beginning and 75.8MB in the end (delta: 23.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 125.8MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 287]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 286. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L278] double x = -1.0 / 0.0; [L279] double y = __VERIFIER_nondet_double(); [L281] CALL, EXPR isinf_double(x) [L248] __int32_t hx, lx; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, zero_atan2=0] [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, \result=1, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=2146435072, lx=0, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, zero_atan2=0] [L281] RET, EXPR isinf_double(x) [L281] EXPR isinf_double(x) && isfinite_double(y) [L281] CALL, EXPR isfinite_double(y) [L262] __int32_t hx; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, \result=-3, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L281] RET, EXPR isfinite_double(y) [L281] EXPR isinf_double(x) && isfinite_double(y) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isfinite_double(y)=-3, isinf_double(x)=1, isinf_double(x) && isfinite_double(y)=1, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L281] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L283] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L283] RET, EXPR __ieee754_atan2(y, x) [L283] double res = __ieee754_atan2(y, x); [L286] COND TRUE res != pi VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L287] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 416 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 283 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 13:22:52,228 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0682b.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 04255db23fa2b33ef965cf216e618982ce4f05405d3eba07d1c5e94169a40ce3 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:22:54,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:22:54,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:22:54,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:22:54,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:22:54,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:22:54,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:22:54,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:22:54,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:22:54,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:22:54,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:22:54,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:22:54,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:22:54,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:22:54,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:22:54,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:22:54,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:22:54,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:22:54,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:22:54,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:22:54,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:22:54,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:22:54,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:22:54,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:22:54,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:22:54,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:22:54,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:22:54,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:22:54,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:22:54,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:22:54,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:22:54,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:22:54,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:22:54,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:22:54,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:22:54,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:22:54,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:22:54,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:22:54,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:22:54,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:22:54,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:22:54,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:22:54,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:22:54,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:22:54,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:22:54,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:22:54,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:22:54,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:22:54,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:22:54,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:22:54,283 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:22:54,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:22:54,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:22:54,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:22:54,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:22:54,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:22:54,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:22:54,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:22:54,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:22:54,286 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:22:54,286 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:22:54,286 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:22:54,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:22:54,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:22:54,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:22:54,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:22:54,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:22:54,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:22:54,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:22:54,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:22:54,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:22:54,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:22:54,289 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:22:54,289 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:22:54,289 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:22:54,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:22:54,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:22:54,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:22:54,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:22:54,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04255db23fa2b33ef965cf216e618982ce4f05405d3eba07d1c5e94169a40ce3 [2021-12-14 13:22:54,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:22:54,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:22:54,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:22:54,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:22:54,612 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:22:54,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-12-14 13:22:54,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa3150de/c148d480dd5d45a7b3f8cf8e3f5590fb/FLAG51f8272fe [2021-12-14 13:22:55,122 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:22:55,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2021-12-14 13:22:55,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa3150de/c148d480dd5d45a7b3f8cf8e3f5590fb/FLAG51f8272fe [2021-12-14 13:22:55,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa3150de/c148d480dd5d45a7b3f8cf8e3f5590fb [2021-12-14 13:22:55,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:22:55,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:22:55,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:22:55,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:22:55,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:22:55,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440ea5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55, skipping insertion in model container [2021-12-14 13:22:55,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:22:55,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:22:55,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-12-14 13:22:55,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:22:55,489 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:22:55,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c[6873,6886] [2021-12-14 13:22:55,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:22:55,599 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:22:55,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55 WrapperNode [2021-12-14 13:22:55,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:22:55,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:22:55,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:22:55,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:22:55,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,670 INFO L137 Inliner]: procedures = 24, calls = 98, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 276 [2021-12-14 13:22:55,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:22:55,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:22:55,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:22:55,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:22:55,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:22:55,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:22:55,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:22:55,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:22:55,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (1/1) ... [2021-12-14 13:22:55,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:22:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:22:55,768 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) [2021-12-14 13:22:55,789 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 [2021-12-14 13:22:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:22:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-14 13:22:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-14 13:22:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:22:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:22:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-14 13:22:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-14 13:22:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-14 13:22:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-14 13:22:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-14 13:22:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-14 13:22:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:22:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:22:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-14 13:22:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:22:55,925 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:22:55,926 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:23:17,612 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:23:17,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:23:17,621 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-14 13:23:17,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:23:17 BoogieIcfgContainer [2021-12-14 13:23:17,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:23:17,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:23:17,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:23:17,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:23:17,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:22:55" (1/3) ... [2021-12-14 13:23:17,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47422d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:23:17, skipping insertion in model container [2021-12-14 13:23:17,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:22:55" (2/3) ... [2021-12-14 13:23:17,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47422d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:23:17, skipping insertion in model container [2021-12-14 13:23:17,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:23:17" (3/3) ... [2021-12-14 13:23:17,632 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2021-12-14 13:23:17,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:23:17,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:23:17,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:23:17,689 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:23:17,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:23:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:23:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 13:23:17,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:23:17,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:23:17,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:23:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:23:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash -233161701, now seen corresponding path program 1 times [2021-12-14 13:23:17,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:23:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310591983] [2021-12-14 13:23:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:23:17,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:23:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:23:17,728 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) [2021-12-14 13:23:17,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:23:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:23:18,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 13:23:18,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:23:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:23:18,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:23:18,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:23:18,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310591983] [2021-12-14 13:23:18,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310591983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:23:18,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:23:18,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:23:18,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810602578] [2021-12-14 13:23:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:23:18,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:23:18,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:23:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:23:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:23:18,464 INFO L87 Difference]: Start difference. First operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:23:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:23:18,489 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2021-12-14 13:23:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:23:18,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-14 13:23:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:23:18,496 INFO L225 Difference]: With dead ends: 204 [2021-12-14 13:23:18,496 INFO L226 Difference]: Without dead ends: 99 [2021-12-14 13:23:18,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:23:18,501 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:23:18,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:23:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-14 13:23:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-14 13:23:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:23:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2021-12-14 13:23:18,534 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 15 [2021-12-14 13:23:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:23:18,534 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2021-12-14 13:23:18,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:23:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2021-12-14 13:23:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 13:23:18,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:23:18,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:23:18,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 13:23:18,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:23:18,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:23:18,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:23:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash -114752879, now seen corresponding path program 1 times [2021-12-14 13:23:18,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:23:18,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816425988] [2021-12-14 13:23:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:23:18,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:23:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:23:18,756 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) [2021-12-14 13:23:18,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 13:23:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:23:19,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 13:23:19,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:23:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:23:19,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:23:19,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:23:19,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816425988] [2021-12-14 13:23:19,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816425988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:23:19,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:23:19,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:23:19,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524000662] [2021-12-14 13:23:19,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:23:19,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 13:23:19,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:23:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 13:23:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:23:19,598 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-14 13:23:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:23:19,928 INFO L93 Difference]: Finished difference Result 187 states and 266 transitions. [2021-12-14 13:23:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 13:23:19,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 [2021-12-14 13:23:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:23:19,931 INFO L225 Difference]: With dead ends: 187 [2021-12-14 13:23:19,931 INFO L226 Difference]: Without dead ends: 99 [2021-12-14 13:23:19,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:23:19,933 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 13:23:19,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 13:23:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-14 13:23:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-14 13:23:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:23:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2021-12-14 13:23:19,944 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 18 [2021-12-14 13:23:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:23:19,944 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2021-12-14 13:23:19,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-14 13:23:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2021-12-14 13:23:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 13:23:19,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:23:19,946 INFO L514 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] [2021-12-14 13:23:19,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 13:23:20,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:23:20,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:23:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:23:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2086328612, now seen corresponding path program 1 times [2021-12-14 13:23:20,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:23:20,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026422830] [2021-12-14 13:23:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:23:20,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:23:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:23:20,163 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) [2021-12-14 13:23:20,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 13:23:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:23:20,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-14 13:23:20,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:23:21,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-14 13:23:24,362 INFO L354 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2021-12-14 13:23:24,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 31 [2021-12-14 13:23:32,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:23:32,802 INFO L354 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2021-12-14 13:23:32,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2021-12-14 13:23:38,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:23:38,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-12-14 13:23:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:23:51,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:23:51,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:23:51,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026422830] [2021-12-14 13:23:51,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026422830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:23:51,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:23:51,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 13:23:51,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672977585] [2021-12-14 13:23:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:23:51,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 13:23:51,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:23:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 13:23:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=130, Unknown=2, NotChecked=0, Total=156 [2021-12-14 13:23:51,699 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:23:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:23:51,720 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2021-12-14 13:23:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 13:23:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 13:23:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:23:51,721 INFO L225 Difference]: With dead ends: 103 [2021-12-14 13:23:51,722 INFO L226 Difference]: Without dead ends: 99 [2021-12-14 13:23:51,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=24, Invalid=130, Unknown=2, NotChecked=0, Total=156 [2021-12-14 13:23:51,723 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:23:51,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1378 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 147 Unchecked, 0.0s Time] [2021-12-14 13:23:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-14 13:23:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-14 13:23:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:23:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2021-12-14 13:23:51,732 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 22 [2021-12-14 13:23:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:23:51,733 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2021-12-14 13:23:51,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:23:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2021-12-14 13:23:51,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-14 13:23:51,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:23:51,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:23:51,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:23:51,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:23:51,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:23:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:23:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1752843547, now seen corresponding path program 1 times [2021-12-14 13:23:51,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:23:51,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925902160] [2021-12-14 13:23:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:23:51,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:23:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:23:51,951 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) [2021-12-14 13:23:51,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 13:23:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:23:52,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 13:23:52,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:23:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:23:56,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:23:56,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:23:56,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925902160] [2021-12-14 13:23:56,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925902160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:23:56,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:23:56,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:23:56,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022801484] [2021-12-14 13:23:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:23:56,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:23:56,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:23:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:23:56,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:23:56,341 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-12-14 13:23:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:23:57,162 INFO L93 Difference]: Finished difference Result 192 states and 273 transitions. [2021-12-14 13:23:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:23:57,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-12-14 13:23:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:23:57,165 INFO L225 Difference]: With dead ends: 192 [2021-12-14 13:23:57,168 INFO L226 Difference]: Without dead ends: 117 [2021-12-14 13:23:57,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:23:57,171 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 22 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 13:23:57,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 740 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 31 Unchecked, 0.8s Time] [2021-12-14 13:23:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-14 13:23:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2021-12-14 13:23:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.391304347826087) internal successors, (128), 92 states have internal predecessors, (128), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:23:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 136 transitions. [2021-12-14 13:23:57,194 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 136 transitions. Word has length 27 [2021-12-14 13:23:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:23:57,195 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 136 transitions. [2021-12-14 13:23:57,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-12-14 13:23:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 136 transitions. [2021-12-14 13:23:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-14 13:23:57,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:23:57,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:23:57,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-14 13:23:57,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:23:57,419 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:23:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:23:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1810101849, now seen corresponding path program 1 times [2021-12-14 13:23:57,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:23:57,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815962961] [2021-12-14 13:23:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:23:57,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:23:57,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:23:57,422 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) [2021-12-14 13:23:57,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 13:23:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:23:57,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 13:23:57,719 INFO L286 TraceCheckSpWp]: Computing forward predicates...