./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/drift_tenth.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/drift_tenth.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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:06:43,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:06:43,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:06:43,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:06:43,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:06:43,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:06:43,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:06:43,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:06:43,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:06:43,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:06:43,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:06:43,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:06:43,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:06:43,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:06:43,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:06:43,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:06:43,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:06:43,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:06:43,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:06:43,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:06:43,513 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:06:43,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:06:43,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:06:43,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:06:43,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:06:43,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:06:43,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:06:43,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:06:43,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:06:43,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:06:43,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:06:43,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:06:43,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:06:43,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:06:43,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:06:43,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:06:43,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:06:43,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:06:43,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:06:43,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:06:43,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:06:43,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:06:43,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:06:43,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:06:43,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:06:43,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:06:43,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:06:43,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:06:43,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:06:43,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:06:43,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:06:43,549 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:06:43,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:06:43,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:06:43,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:06:43,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:06:43,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:06:43,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:06:43,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:06:43,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:06:43,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:06:43,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:06:43,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:06:43,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:06:43,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:06:43,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:06:43,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:06:43,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:43,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:06:43,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:06:43,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:06:43,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:06:43,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:06:43,554 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:06:43,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:06:43,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:06:43,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2022-07-13 14:06:43,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:06:43,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:06:43,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:06:43,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:06:43,816 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:06:43,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2022-07-13 14:06:43,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b838a409/1bcbaa84f15b4d29a3e85235e3b6594e/FLAGed966f91f [2022-07-13 14:06:44,332 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:06:44,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2022-07-13 14:06:44,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b838a409/1bcbaa84f15b4d29a3e85235e3b6594e/FLAGed966f91f [2022-07-13 14:06:44,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b838a409/1bcbaa84f15b4d29a3e85235e3b6594e [2022-07-13 14:06:44,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:06:44,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:06:44,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:44,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:06:44,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:06:44,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325772d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44, skipping insertion in model container [2022-07-13 14:06:44,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:06:44,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:06:44,516 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/drift_tenth.c[348,361] [2022-07-13 14:06:44,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:44,534 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:06:44,543 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/drift_tenth.c[348,361] [2022-07-13 14:06:44,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:44,554 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:06:44,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44 WrapperNode [2022-07-13 14:06:44,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:44,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:44,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:06:44,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:06:44,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,587 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-07-13 14:06:44,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:44,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:06:44,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:06:44,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:06:44,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:06:44,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:06:44,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:06:44,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:06:44,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (1/1) ... [2022-07-13 14:06:44,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:06:44,636 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 14:06:44,638 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 14:06:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:06:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:06:44,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:06:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:06:44,714 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:06:44,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:06:44,781 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:06:44,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:06:44,787 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:06:44,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:44 BoogieIcfgContainer [2022-07-13 14:06:44,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:06:44,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:06:44,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:06:44,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:06:44,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:06:44" (1/3) ... [2022-07-13 14:06:44,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757be2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:44, skipping insertion in model container [2022-07-13 14:06:44,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:44" (2/3) ... [2022-07-13 14:06:44,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757be2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:44, skipping insertion in model container [2022-07-13 14:06:44,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:44" (3/3) ... [2022-07-13 14:06:44,818 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2022-07-13 14:06:44,844 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:06:44,859 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:06:44,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:06:44,949 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@7e757810, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@384c3c78 [2022-07-13 14:06:44,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:06:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 14:06:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 14:06:44,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:44,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 14:06:44,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2022-07-13 14:06:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:06:44,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241196367] [2022-07-13 14:06:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:06:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:45,107 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 14:06:45,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:06:45,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241196367] [2022-07-13 14:06:45,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241196367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:06:45,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:06:45,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:06:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216134743] [2022-07-13 14:06:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:06:45,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:06:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:06:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:06:45,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:06:45,140 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:06:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:06:45,160 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-13 14:06:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:06:45,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-13 14:06:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:06:45,169 INFO L225 Difference]: With dead ends: 22 [2022-07-13 14:06:45,169 INFO L226 Difference]: Without dead ends: 10 [2022-07-13 14:06:45,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:06:45,175 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:06:45,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:06:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-13 14:06:45,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-07-13 14:06:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 14:06:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-13 14:06:45,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-07-13 14:06:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:06:45,202 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-13 14:06:45,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:06:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-13 14:06:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:06:45,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:45,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:06:45,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:06:45,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:45,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2022-07-13 14:06:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:06:45,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588976213] [2022-07-13 14:06:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:45,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:06:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:45,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:06:45,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588976213] [2022-07-13 14:06:45,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588976213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 14:06:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387766773] [2022-07-13 14:06:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 14:06:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:06:45,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 14:06:45,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 14:06:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:45,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 14:06:45,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:06:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:45,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:06:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:45,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387766773] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:06:45,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 14:06:45,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 14:06:45,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122294667] [2022-07-13 14:06:45,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 14:06:45,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:06:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:06:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:06:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:06:45,368 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:06:45,390 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-07-13 14:06:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:06:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-13 14:06:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:06:45,391 INFO L225 Difference]: With dead ends: 19 [2022-07-13 14:06:45,391 INFO L226 Difference]: Without dead ends: 15 [2022-07-13 14:06:45,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:06:45,393 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:06:45,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:06:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-13 14:06:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-13 14:06:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-07-13 14:06:45,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-07-13 14:06:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:06:45,398 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-07-13 14:06:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-07-13 14:06:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 14:06:45,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:45,399 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-07-13 14:06:45,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 14:06:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 14:06:45,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2022-07-13 14:06:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:06:45,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709421047] [2022-07-13 14:06:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:45,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:06:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:06:45,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709421047] [2022-07-13 14:06:45,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709421047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 14:06:45,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347662957] [2022-07-13 14:06:45,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 14:06:45,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 14:06:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:06:45,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 14:06:45,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 14:06:45,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 14:06:45,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 14:06:45,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 14:06:45,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:06:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:45,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:06:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:45,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347662957] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:06:45,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 14:06:45,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-13 14:06:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480978902] [2022-07-13 14:06:45,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 14:06:45,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 14:06:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:06:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 14:06:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-13 14:06:45,903 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:06:45,960 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-07-13 14:06:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 14:06:45,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 14:06:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:06:45,962 INFO L225 Difference]: With dead ends: 31 [2022-07-13 14:06:45,962 INFO L226 Difference]: Without dead ends: 27 [2022-07-13 14:06:45,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-13 14:06:45,965 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:06:45,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:06:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-13 14:06:45,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-13 14:06:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-07-13 14:06:45,977 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-07-13 14:06:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:06:45,977 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-07-13 14:06:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-07-13 14:06:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 14:06:45,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:45,979 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2022-07-13 14:06:46,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:06:46,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 14:06:46,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:46,200 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2022-07-13 14:06:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:06:46,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749235026] [2022-07-13 14:06:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:06:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:06:46,229 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:06:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:06:46,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:06:46,268 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:06:46,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:06:46,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 14:06:46,274 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1] [2022-07-13 14:06:46,278 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:06:46,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:06:46 BoogieIcfgContainer [2022-07-13 14:06:46,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:06:46,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:06:46,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:06:46,310 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:06:46,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:44" (3/4) ... [2022-07-13 14:06:46,313 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:06:46,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:06:46,315 INFO L158 Benchmark]: Toolchain (without parser) took 1956.18ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.8MB in the beginning and 74.0MB in the end (delta: -12.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-13 14:06:46,318 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 94.4MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:46,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.94ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.6MB in the beginning and 89.8MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:06:46,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.69ms. Allocated memory is still 113.2MB. Free memory was 89.8MB in the beginning and 88.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:06:46,320 INFO L158 Benchmark]: Boogie Preprocessor took 16.31ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 87.8MB in the end (delta: 523.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:46,320 INFO L158 Benchmark]: RCFGBuilder took 185.31ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 78.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:06:46,321 INFO L158 Benchmark]: TraceAbstraction took 1517.49ms. Allocated memory is still 113.2MB. Free memory was 78.4MB in the beginning and 74.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-07-13 14:06:46,321 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 74.0MB in the end (delta: 634.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:06:46,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 94.4MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.94ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.6MB in the beginning and 89.8MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.69ms. Allocated memory is still 113.2MB. Free memory was 89.8MB in the beginning and 88.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.31ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 87.8MB in the end (delta: 523.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 185.31ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 78.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1517.49ms. Allocated memory is still 113.2MB. Free memory was 78.4MB in the beginning and 74.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 74.0MB in the end (delta: 634.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 VAL [i=0, time=0] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=0] [L14] i++ VAL [i=1] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=1] [L14] i++ VAL [i=2] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=2] [L14] i++ VAL [i=3] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=3] [L14] i++ VAL [i=4] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=4] [L14] i++ VAL [i=5] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=5] [L14] i++ VAL [i=6] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=6] [L14] i++ VAL [i=7] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=7] [L14] i++ VAL [i=8] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=8] [L14] i++ VAL [i=9] [L14] COND TRUE i < 10 [L15] time += tick VAL [i=9] [L14] i++ VAL [i=10] [L14] COND FALSE !(i < 10) VAL [i=10] [L17] CALL __VERIFIER_assert(time != 1.0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 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 14:06:46,359 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/drift_tenth.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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:06:48,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:06:48,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:06:48,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:06:48,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:06:48,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:06:48,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:06:48,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:06:48,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:06:48,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:06:48,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:06:48,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:06:48,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:06:48,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:06:48,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:06:48,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:06:48,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:06:48,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:06:48,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:06:48,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:06:48,401 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:06:48,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:06:48,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:06:48,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:06:48,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:06:48,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:06:48,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:06:48,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:06:48,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:06:48,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:06:48,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:06:48,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:06:48,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:06:48,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:06:48,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:06:48,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:06:48,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:06:48,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:06:48,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:06:48,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:06:48,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:06:48,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:06:48,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:06:48,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:06:48,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:06:48,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:06:48,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:06:48,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:06:48,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:06:48,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:06:48,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:06:48,464 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:06:48,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:06:48,465 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:06:48,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:06:48,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:06:48,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:06:48,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:06:48,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:06:48,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:06:48,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:06:48,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:06:48,467 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:06:48,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:06:48,467 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:06:48,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:06:48,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:06:48,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:06:48,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:06:48,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:48,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:06:48,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:06:48,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:06:48,469 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:06:48,469 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:06:48,470 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:06:48,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:06:48,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:06:48,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:06:48,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2022-07-13 14:06:48,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:06:48,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:06:48,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:06:48,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:06:48,812 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:06:48,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2022-07-13 14:06:48,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71f7aaa5/a48324ed24864ca4a0825123941f1402/FLAGc774db90d [2022-07-13 14:06:49,326 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:06:49,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2022-07-13 14:06:49,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71f7aaa5/a48324ed24864ca4a0825123941f1402/FLAGc774db90d [2022-07-13 14:06:49,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71f7aaa5/a48324ed24864ca4a0825123941f1402 [2022-07-13 14:06:49,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:06:49,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:06:49,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:49,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:06:49,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:06:49,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9342bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49, skipping insertion in model container [2022-07-13 14:06:49,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:06:49,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:06:49,518 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/drift_tenth.c[348,361] [2022-07-13 14:06:49,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:49,551 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:06:49,591 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/drift_tenth.c[348,361] [2022-07-13 14:06:49,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:49,606 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:06:49,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49 WrapperNode [2022-07-13 14:06:49,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:49,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:49,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:06:49,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:06:49,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,636 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-07-13 14:06:49,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:49,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:06:49,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:06:49,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:06:49,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:06:49,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:06:49,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:06:49,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:06:49,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (1/1) ... [2022-07-13 14:06:49,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:06:49,692 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 14:06:49,702 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 14:06:49,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:06:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:06:49,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:06:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:06:49,783 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:06:49,784 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:06:50,011 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:06:50,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:06:50,015 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:06:50,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:50 BoogieIcfgContainer [2022-07-13 14:06:50,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:06:50,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:06:50,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:06:50,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:06:50,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:06:49" (1/3) ... [2022-07-13 14:06:50,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55817278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:50, skipping insertion in model container [2022-07-13 14:06:50,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:49" (2/3) ... [2022-07-13 14:06:50,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55817278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:50, skipping insertion in model container [2022-07-13 14:06:50,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:50" (3/3) ... [2022-07-13 14:06:50,023 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2022-07-13 14:06:50,063 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:06:50,063 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:06:50,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:06:50,138 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@487a3004, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c8e7cf6 [2022-07-13 14:06:50,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:06:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 14:06:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 14:06:50,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:50,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 14:06:50,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:50,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2022-07-13 14:06:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:06:50,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711338463] [2022-07-13 14:06:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:50,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:06:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:06:50,199 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 14:06:50,248 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 14:06:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:50,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 14:06:50,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:06:50,348 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 14:06:50,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:06:50,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:06:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711338463] [2022-07-13 14:06:50,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711338463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:06:50,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:06:50,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:06:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963806098] [2022-07-13 14:06:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:06:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:06:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:06:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:06:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:06:50,389 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:06:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:06:50,471 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-13 14:06:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:06:50,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-13 14:06:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:06:50,482 INFO L225 Difference]: With dead ends: 22 [2022-07-13 14:06:50,482 INFO L226 Difference]: Without dead ends: 10 [2022-07-13 14:06:50,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 14:06:50,490 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:06:50,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 14:06:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-13 14:06:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-07-13 14:06:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 14:06:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-13 14:06:50,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-07-13 14:06:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:06:50,525 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-13 14:06:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:06:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-13 14:06:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:06:50,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:50,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:06:50,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 14:06:50,732 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 14:06:50,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2022-07-13 14:06:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:06:50,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960762326] [2022-07-13 14:06:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:06:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:06:50,736 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 14:06:50,737 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 14:06:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:50,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 14:06:50,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:06:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:50,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:06:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:50,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:06:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960762326] [2022-07-13 14:06:50,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960762326] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:06:50,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:06:50,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-13 14:06:50,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062224422] [2022-07-13 14:06:50,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:06:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:06:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:06:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:06:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:06:50,875 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 14:06:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:06:51,075 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-07-13 14:06:51,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:06:51,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 8 [2022-07-13 14:06:51,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:06:51,078 INFO L225 Difference]: With dead ends: 19 [2022-07-13 14:06:51,078 INFO L226 Difference]: Without dead ends: 15 [2022-07-13 14:06:51,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:06:51,080 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 14:06:51,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 14:06:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-13 14:06:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-13 14:06:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-07-13 14:06:51,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-07-13 14:06:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:06:51,086 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-07-13 14:06:51,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 14:06:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-07-13 14:06:51,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 14:06:51,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:51,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-07-13 14:06:51,095 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 14:06:51,287 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 14:06:51,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2022-07-13 14:06:51,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:06:51,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629826991] [2022-07-13 14:06:51,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 14:06:51,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:06:51,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:06:51,291 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 14:06:51,293 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 14:06:51,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 14:06:51,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 14:06:51,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:06:51,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:06:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:55,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:07:17,712 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-07-13 14:07:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 3 times theorem prover too weak. 0 trivial. 7 not checked. [2022-07-13 14:07:50,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:07:50,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629826991] [2022-07-13 14:07:50,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629826991] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:07:50,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:07:50,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-13 14:07:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301562508] [2022-07-13 14:07:50,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:07:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 14:07:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:07:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 14:07:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=128, Unknown=8, NotChecked=24, Total=210 [2022-07-13 14:07:50,909 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:07:53,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:07,154 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse4 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse2 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= (let ((.cse3 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse3) .cse3) .cse3) .cse3)) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from false [2022-07-13 14:08:09,190 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse4 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse2 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= (let ((.cse3 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse3) .cse3) .cse3) .cse3)) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2022-07-13 14:08:11,221 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (= (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-07-13 14:08:13,249 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (= (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse2) .cse2) .cse2) .cse2)) |c_ULTIMATE.start_main_~time~0#1|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2022-07-13 14:08:16,495 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1|) .cse1)) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~tick~0#1|)) .cse1)))) is different from true [2022-07-13 14:08:18,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:20,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:38,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:45,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:47,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:49,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:51,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:53,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:55,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:57,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:08:58,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:01,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:03,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:14,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:16,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:18,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:20,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:22,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:09:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:09:22,876 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-07-13 14:09:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 14:09:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 14:09:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:09:22,877 INFO L225 Difference]: With dead ends: 31 [2022-07-13 14:09:22,877 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 14:09:22,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 95.5s TimeCoverageRelationStatistics Valid=85, Invalid=218, Unknown=19, NotChecked=140, Total=462 [2022-07-13 14:09:22,879 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 13 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2022-07-13 14:09:22,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 52 Invalid, 14 Unknown, 31 Unchecked, 42.6s Time] [2022-07-13 14:09:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 14:09:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 14:09:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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 14:09:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-07-13 14:09:22,882 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2022-07-13 14:09:22,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:09:22,883 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-07-13 14:09:22,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:09:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-07-13 14:09:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 14:09:22,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:09:22,884 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2022-07-13 14:09:22,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 14:09:23,091 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 14:09:23,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:09:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:09:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash -248120899, now seen corresponding path program 3 times [2022-07-13 14:09:23,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:09:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904137861] [2022-07-13 14:09:23,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 14:09:23,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:09:23,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:09:23,095 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 14:09:23,099 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 14:09:23,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-13 14:09:23,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 14:09:23,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:09:23,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:09:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:09:23,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:09:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:09:24,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:09:24,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904137861] [2022-07-13 14:09:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904137861] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 14:09:24,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 14:09:24,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-07-13 14:09:24,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939700772] [2022-07-13 14:09:24,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 14:09:24,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 14:09:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:09:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 14:09:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-07-13 14:09:24,387 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 14:09:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:09:25,871 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-07-13 14:09:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 14:09:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-13 14:09:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:09:25,877 INFO L225 Difference]: With dead ends: 31 [2022-07-13 14:09:25,877 INFO L226 Difference]: Without dead ends: 27 [2022-07-13 14:09:25,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-07-13 14:09:25,878 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:09:25,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 14:09:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-13 14:09:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-13 14:09:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:09:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-07-13 14:09:25,883 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2022-07-13 14:09:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:09:25,883 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-07-13 14:09:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 14:09:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-07-13 14:09:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 14:09:25,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:09:25,884 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2022-07-13 14:09:25,901 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 14:09:26,085 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 14:09:26,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:09:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:09:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 4 times [2022-07-13 14:09:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:09:26,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155577916] [2022-07-13 14:09:26,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 14:09:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:09:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:09:26,087 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 14:09:26,089 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 14:09:26,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 14:09:26,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 14:09:26,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 14:09:26,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:10:33,370 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 14:10:42,667 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-13 14:10:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 19 not checked. [2022-07-13 14:10:50,261 INFO L328 TraceCheckSpWp]: Computing backward predicates...