./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:17:04,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:17:04,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:17:04,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:17:04,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:17:04,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:17:04,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:17:04,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:17:04,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:17:04,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:17:04,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:17:04,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:17:04,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:17:04,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:17:04,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:17:04,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:17:04,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:17:04,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:17:04,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:17:04,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:17:04,605 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:17:04,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:17:04,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:17:04,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:17:04,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:17:04,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:17:04,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:17:04,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:17:04,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:17:04,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:17:04,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:17:04,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:17:04,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:17:04,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:17:04,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:17:04,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:17:04,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:17:04,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:17:04,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:17:04,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:17:04,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:17:04,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:17:04,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:17:04,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:17:04,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:17:04,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:17:04,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:17:04,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:17:04,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:17:04,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:17:04,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:17:04,645 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:17:04,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:17:04,646 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:17:04,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:17:04,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:17:04,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:17:04,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:17:04,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:17:04,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:17:04,647 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:17:04,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:17:04,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:17:04,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:17:04,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:17:04,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:17:04,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:17:04,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:04,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:17:04,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:17:04,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:17:04,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:17:04,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:17:04,650 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:17:04,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:17:04,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:17:04,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2022-07-13 14:17:04,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:17:04,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:17:04,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:17:04,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:17:04,884 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:17:04,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-07-13 14:17:04,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f924ff5/40ce7bcf1cdd49389f9fc608c62079a2/FLAG592c459e9 [2022-07-13 14:17:05,289 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:17:05,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-07-13 14:17:05,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f924ff5/40ce7bcf1cdd49389f9fc608c62079a2/FLAG592c459e9 [2022-07-13 14:17:05,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f924ff5/40ce7bcf1cdd49389f9fc608c62079a2 [2022-07-13 14:17:05,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:17:05,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:17:05,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:05,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:17:05,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:17:05,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9271df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05, skipping insertion in model container [2022-07-13 14:17:05,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:17:05,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:17:05,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-07-13 14:17:05,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:05,482 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:17:05,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-07-13 14:17:05,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:05,521 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:17:05,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05 WrapperNode [2022-07-13 14:17:05,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:05,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:05,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:17:05,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:17:05,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,550 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-07-13 14:17:05,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:05,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:17:05,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:17:05,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:17:05,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:17:05,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:17:05,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:17:05,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:17:05,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (1/1) ... [2022-07-13 14:17:05,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:05,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:17:05,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 14:17:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 14:17:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:17:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:17:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:17:05,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:17:05,690 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:17:05,691 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:17:05,775 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:17:05,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:17:05,780 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:17:05,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:05 BoogieIcfgContainer [2022-07-13 14:17:05,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:17:05,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:17:05,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:17:05,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:17:05,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:17:05" (1/3) ... [2022-07-13 14:17:05,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fbb7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:05, skipping insertion in model container [2022-07-13 14:17:05,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:05" (2/3) ... [2022-07-13 14:17:05,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fbb7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:05, skipping insertion in model container [2022-07-13 14:17:05,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:05" (3/3) ... [2022-07-13 14:17:05,789 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2022-07-13 14:17:05,800 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:17:05,800 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:17:05,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:17:05,837 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d9bf160, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c35abfe [2022-07-13 14:17:05,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:17:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:05,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:05,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:05,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2022-07-13 14:17:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:17:05,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008893227] [2022-07-13 14:17:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:05,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:17:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:17:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008893227] [2022-07-13 14:17:06,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008893227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:06,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:06,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:17:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955388906] [2022-07-13 14:17:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:06,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:17:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:17:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:17:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:17:06,144 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:06,274 INFO L93 Difference]: Finished difference Result 115 states and 167 transitions. [2022-07-13 14:17:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:17:06,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:17:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:06,285 INFO L225 Difference]: With dead ends: 115 [2022-07-13 14:17:06,285 INFO L226 Difference]: Without dead ends: 92 [2022-07-13 14:17:06,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:17:06,297 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 162 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:06,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 194 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:17:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-07-13 14:17:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 23. [2022-07-13 14:17:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-07-13 14:17:06,333 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2022-07-13 14:17:06,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:06,334 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-07-13 14:17:06,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-07-13 14:17:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:06,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:06,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:17:06,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2022-07-13 14:17:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:17:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796367067] [2022-07-13 14:17:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:17:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:17:06,372 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:17:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:17:06,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:17:06,405 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:17:06,414 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:17:06,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:17:06,419 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 14:17:06,424 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:17:06,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:17:06 BoogieIcfgContainer [2022-07-13 14:17:06,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:17:06,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:17:06,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:17:06,458 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:17:06,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:05" (3/4) ... [2022-07-13 14:17:06,461 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:17:06,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:17:06,462 INFO L158 Benchmark]: Toolchain (without parser) took 1153.54ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 75.8MB in the beginning and 88.4MB in the end (delta: -12.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-07-13 14:17:06,463 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:17:06,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.87ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 78.6MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:17:06,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.85ms. Allocated memory is still 102.8MB. Free memory was 78.6MB in the beginning and 77.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:17:06,466 INFO L158 Benchmark]: Boogie Preprocessor took 21.81ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 76.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:17:06,468 INFO L158 Benchmark]: RCFGBuilder took 208.54ms. Allocated memory is still 102.8MB. Free memory was 76.0MB in the beginning and 66.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 14:17:06,469 INFO L158 Benchmark]: TraceAbstraction took 672.81ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 65.6MB in the beginning and 88.9MB in the end (delta: -23.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-07-13 14:17:06,469 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 125.8MB. Free memory was 88.9MB in the beginning and 88.4MB in the end (delta: 486.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:17:06,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.87ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 78.6MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.85ms. Allocated memory is still 102.8MB. Free memory was 78.6MB in the beginning and 77.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.81ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 76.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 208.54ms. Allocated memory is still 102.8MB. Free memory was 76.0MB in the beginning and 66.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 672.81ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 65.6MB in the beginning and 88.9MB in the end (delta: -23.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 125.8MB. Free memory was 88.9MB in the beginning and 88.4MB in the end (delta: 486.3kB). 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: 66]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 VAL [__return_main=0, main__i=0] [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0, main__D=50, main__i=0, main__X=49] [L28] COND TRUE main__X >= -128.0 VAL [__return_main=0, main__D=50, main__i=0, main__X=49] [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L37] COND TRUE main__D >= 0.0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=50, main__i=0, main__X=49] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__X=49] [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49, main__Y=49] [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49] [L52] int main____CPAchecker_TMP_2; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49] [L53] COND FALSE !(main__Y >= -129.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=50, main__i=0, main__S=51, main__X=49] [L79] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] [L64] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] [L66] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=50, main__i=0, main__S=51, main__X=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 60 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 69 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 14:17:06,507 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-benchs/rlim_invariant.c.p+cfa-reducer.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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:17:08,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:17:08,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:17:08,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:17:08,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:17:08,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:17:08,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:17:08,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:17:08,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:17:08,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:17:08,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:17:08,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:17:08,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:17:08,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:17:08,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:17:08,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:17:08,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:17:08,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:17:08,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:17:08,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:17:08,380 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:17:08,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:17:08,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:17:08,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:17:08,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:17:08,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:17:08,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:17:08,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:17:08,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:17:08,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:17:08,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:17:08,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:17:08,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:17:08,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:17:08,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:17:08,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:17:08,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:17:08,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:17:08,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:17:08,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:17:08,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:17:08,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:17:08,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:17:08,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:17:08,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:17:08,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:17:08,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:17:08,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:17:08,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:17:08,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:17:08,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:17:08,431 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:17:08,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:17:08,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:17:08,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:17:08,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:17:08,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:17:08,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:17:08,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:17:08,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:17:08,434 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:17:08,434 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:17:08,434 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:17:08,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:17:08,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:17:08,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:17:08,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:17:08,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:17:08,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:17:08,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:08,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:17:08,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:17:08,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:17:08,436 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:17:08,436 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:17:08,436 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:17:08,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:17:08,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:17:08,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:17:08,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2022-07-13 14:17:08,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:17:08,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:17:08,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:17:08,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:17:08,738 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:17:08,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-07-13 14:17:08,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e74c98fa/fdf8c497be084804821a453fde8643e3/FLAG4160ca9ef [2022-07-13 14:17:09,162 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:17:09,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-07-13 14:17:09,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e74c98fa/fdf8c497be084804821a453fde8643e3/FLAG4160ca9ef [2022-07-13 14:17:09,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e74c98fa/fdf8c497be084804821a453fde8643e3 [2022-07-13 14:17:09,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:17:09,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:17:09,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:09,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:17:09,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:17:09,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98da888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09, skipping insertion in model container [2022-07-13 14:17:09,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:17:09,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:17:09,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-07-13 14:17:09,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:09,735 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:17:09,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-07-13 14:17:09,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:17:09,770 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:17:09,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09 WrapperNode [2022-07-13 14:17:09,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:17:09,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:09,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:17:09,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:17:09,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,797 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-07-13 14:17:09,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:17:09,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:17:09,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:17:09,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:17:09,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:17:09,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:17:09,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:17:09,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:17:09,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (1/1) ... [2022-07-13 14:17:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:17:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:17:09,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 14:17:09,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 14:17:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:17:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:17:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:17:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:17:09,928 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:17:09,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:17:10,742 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:17:10,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:17:10,746 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:17:10,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:10 BoogieIcfgContainer [2022-07-13 14:17:10,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:17:10,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:17:10,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:17:10,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:17:10,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:17:09" (1/3) ... [2022-07-13 14:17:10,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70376c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:10, skipping insertion in model container [2022-07-13 14:17:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:17:09" (2/3) ... [2022-07-13 14:17:10,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70376c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:17:10, skipping insertion in model container [2022-07-13 14:17:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:17:10" (3/3) ... [2022-07-13 14:17:10,753 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2022-07-13 14:17:10,773 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:17:10,773 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:17:10,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:17:10,813 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d707314, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bd2a1df [2022-07-13 14:17:10,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:17:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:10,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:10,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:10,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2022-07-13 14:17:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:10,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406074932] [2022-07-13 14:17:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:10,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:10,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:17:10,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:17:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:10,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:17:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:10,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:10,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406074932] [2022-07-13 14:17:10,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406074932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:10,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:10,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:17:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416429567] [2022-07-13 14:17:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:10,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:17:10,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:17:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:17:11,002 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:11,043 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-07-13 14:17:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:17:11,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:17:11,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:11,050 INFO L225 Difference]: With dead ends: 51 [2022-07-13 14:17:11,050 INFO L226 Difference]: Without dead ends: 40 [2022-07-13 14:17:11,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:17:11,055 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 53 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:11,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 122 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:17:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-13 14:17:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-07-13 14:17:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-07-13 14:17:11,078 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2022-07-13 14:17:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:11,078 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-07-13 14:17:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:11,079 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-07-13 14:17:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:11,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:11,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:11,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 14:17:11,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:11,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2022-07-13 14:17:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:11,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025749558] [2022-07-13 14:17:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:11,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:11,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:11,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:17:11,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:17:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:11,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 14:17:11,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:20,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:20,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:20,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025749558] [2022-07-13 14:17:20,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025749558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:20,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:20,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:17:20,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350213329] [2022-07-13 14:17:20,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:20,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:17:20,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:17:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=22, Unknown=2, NotChecked=0, Total=42 [2022-07-13 14:17:20,875 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:29,424 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2022-07-13 14:17:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:17:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:17:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:29,430 INFO L225 Difference]: With dead ends: 66 [2022-07-13 14:17:29,430 INFO L226 Difference]: Without dead ends: 45 [2022-07-13 14:17:29,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=23, Invalid=31, Unknown=2, NotChecked=0, Total=56 [2022-07-13 14:17:29,432 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:29,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 83 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 29 Unchecked, 5.1s Time] [2022-07-13 14:17:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-07-13 14:17:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2022-07-13 14:17:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2022-07-13 14:17:29,437 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 16 [2022-07-13 14:17:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:29,437 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2022-07-13 14:17:29,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2022-07-13 14:17:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:17:29,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:29,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:29,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:17:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:29,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1271663018, now seen corresponding path program 1 times [2022-07-13 14:17:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:29,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583222178] [2022-07-13 14:17:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:29,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:29,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:29,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:17:29,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:17:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:29,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 14:17:29,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:29,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:29,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:29,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583222178] [2022-07-13 14:17:29,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583222178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:29,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:29,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:17:29,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447272911] [2022-07-13 14:17:29,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:17:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:17:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:17:29,728 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:29,878 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2022-07-13 14:17:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:17:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:17:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:29,884 INFO L225 Difference]: With dead ends: 56 [2022-07-13 14:17:29,884 INFO L226 Difference]: Without dead ends: 33 [2022-07-13 14:17:29,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:17:29,885 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:29,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 14:17:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-13 14:17:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-13 14:17:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-07-13 14:17:29,889 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 16 [2022-07-13 14:17:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:29,889 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-07-13 14:17:29,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-07-13 14:17:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:17:29,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:29,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:29,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-13 14:17:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:30,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1069421883, now seen corresponding path program 1 times [2022-07-13 14:17:30,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24237039] [2022-07-13 14:17:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:30,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:30,102 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) [2022-07-13 14:17:30,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 14:17:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 14:17:30,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:34,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:34,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:34,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24237039] [2022-07-13 14:17:34,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24237039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:34,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:34,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:17:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67536554] [2022-07-13 14:17:34,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:34,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:17:34,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:17:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:17:34,191 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:41,148 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-07-13 14:17:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:17:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2022-07-13 14:17:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:41,161 INFO L225 Difference]: With dead ends: 67 [2022-07-13 14:17:41,161 INFO L226 Difference]: Without dead ends: 47 [2022-07-13 14:17:41,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:17:41,162 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:41,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 41 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 24 Unchecked, 5.0s Time] [2022-07-13 14:17:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-13 14:17:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2022-07-13 14:17:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-13 14:17:41,166 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 17 [2022-07-13 14:17:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:41,166 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-13 14:17:41,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-13 14:17:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:17:41,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:41,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:41,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 14:17:41,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:41,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:41,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1450538051, now seen corresponding path program 1 times [2022-07-13 14:17:41,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:41,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620076687] [2022-07-13 14:17:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:41,371 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) [2022-07-13 14:17:41,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 14:17:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:41,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:17:41,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:17:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:17:44,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:17:44,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:17:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620076687] [2022-07-13 14:17:44,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620076687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:17:44,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:17:44,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:17:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542003045] [2022-07-13 14:17:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:17:44,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:17:44,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:17:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:17:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:17:44,593 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:17:58,762 INFO L93 Difference]: Finished difference Result 128 states and 160 transitions. [2022-07-13 14:17:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:17:58,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2022-07-13 14:17:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:17:58,774 INFO L225 Difference]: With dead ends: 128 [2022-07-13 14:17:58,774 INFO L226 Difference]: Without dead ends: 108 [2022-07-13 14:17:58,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:17:58,775 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 74 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:17:58,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-07-13 14:17:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-13 14:17:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 49. [2022-07-13 14:17:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-07-13 14:17:58,782 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-07-13 14:17:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:17:58,782 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-07-13 14:17:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:17:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-07-13 14:17:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:17:58,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:17:58,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:17:58,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 14:17:58,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:17:58,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:17:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:17:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1069229389, now seen corresponding path program 1 times [2022-07-13 14:17:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:17:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914783133] [2022-07-13 14:17:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:17:58,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:17:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:17:58,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:17:58,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 14:17:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:17:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:17:59,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:06,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:06,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:06,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914783133] [2022-07-13 14:18:06,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914783133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:06,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:06,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:18:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205351385] [2022-07-13 14:18:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:18:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:06,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:18:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:18:06,100 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:13,328 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2022-07-13 14:18:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:18:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 17 [2022-07-13 14:18:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:13,339 INFO L225 Difference]: With dead ends: 116 [2022-07-13 14:18:13,339 INFO L226 Difference]: Without dead ends: 87 [2022-07-13 14:18:13,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:18:13,340 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:13,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 59 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 18 Unchecked, 5.1s Time] [2022-07-13 14:18:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-13 14:18:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2022-07-13 14:18:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-07-13 14:18:13,345 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-07-13 14:18:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:13,346 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-07-13 14:18:13,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-07-13 14:18:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:18:13,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:13,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:13,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-13 14:18:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:18:13,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1175383176, now seen corresponding path program 1 times [2022-07-13 14:18:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877397017] [2022-07-13 14:18:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:13,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:13,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:13,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:18:13,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 14:18:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:13,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 14:18:13,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:13,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:13,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:13,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877397017] [2022-07-13 14:18:13,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877397017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:13,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:13,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:18:13,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647585007] [2022-07-13 14:18:13,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:13,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:18:13,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:18:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:18:13,615 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:13,685 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2022-07-13 14:18:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:18:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2022-07-13 14:18:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:13,686 INFO L225 Difference]: With dead ends: 75 [2022-07-13 14:18:13,686 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 14:18:13,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:18:13,687 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:13,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 14:18:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 14:18:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-13 14:18:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-07-13 14:18:13,691 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 17 [2022-07-13 14:18:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:13,691 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-07-13 14:18:13,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-07-13 14:18:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:18:13,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:13,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:13,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-13 14:18:13,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:18:13,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:13,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1724506925, now seen corresponding path program 1 times [2022-07-13 14:18:13,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387259511] [2022-07-13 14:18:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:13,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:13,894 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:18:13,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 14:18:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:13,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:18:13,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:18:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:18:21,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:18:21,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:18:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387259511] [2022-07-13 14:18:21,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387259511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:18:21,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:18:21,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:18:21,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161384989] [2022-07-13 14:18:21,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:18:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:18:21,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:18:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:18:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:18:21,606 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-07-13 14:18:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:18:26,301 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2022-07-13 14:18:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:18:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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 [2022-07-13 14:18:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:18:26,311 INFO L225 Difference]: With dead ends: 58 [2022-07-13 14:18:26,311 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 14:18:26,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:18:26,311 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:18:26,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 19 Unchecked, 2.5s Time] [2022-07-13 14:18:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 14:18:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-07-13 14:18:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:18:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-07-13 14:18:26,316 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 18 [2022-07-13 14:18:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:18:26,316 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-07-13 14:18:26,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-07-13 14:18:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-07-13 14:18:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 14:18:26,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:18:26,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:18:26,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 14:18:26,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:18:26,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:18:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:18:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash -66815887, now seen corresponding path program 1 times [2022-07-13 14:18:26,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:18:26,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269275295] [2022-07-13 14:18:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:18:26,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:18:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:18:26,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:18:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 14:18:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:18:26,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 14:18:26,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:19:36,859 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_8| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse2 .cse1) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_8| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-07-13 14:19:38,875 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_8| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse2 .cse1) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_8| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-07-13 14:20:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-13 14:20:58,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:21:51,177 WARN L233 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 20 DAG size of output: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)