./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1230.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 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:48:39,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:48:39,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:48:39,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:48:39,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:48:39,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:48:39,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:48:39,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:48:39,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:48:39,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:48:39,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:48:39,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:48:39,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:48:39,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:48:39,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:48:39,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:48:39,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:48:39,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:48:39,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:48:39,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:48:39,734 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:48:39,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:48:39,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:48:39,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:48:39,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:48:39,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:48:39,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:48:39,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:48:39,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:48:39,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:48:39,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:48:39,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:48:39,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:48:39,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:48:39,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:48:39,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:48:39,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:48:39,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:48:39,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:48:39,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:48:39,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:48:39,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:48:39,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:48:39,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:48:39,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:48:39,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:48:39,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:48:39,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:48:39,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:48:39,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:48:39,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:48:39,800 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:48:39,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:48:39,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:48:39,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:48:39,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:48:39,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:48:39,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:48:39,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:48:39,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:48:39,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:48:39,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:48:39,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:48:39,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:48:39,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:48:39,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:48:39,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:48:39,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:48:39,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:48:39,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:48:39,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:48:39,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:48:39,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:48:39,805 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:48:39,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:48:39,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:48:39,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 [2022-07-21 01:48:40,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:48:40,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:48:40,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:48:40,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:48:40,185 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:48:40,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2022-07-21 01:48:40,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555b246e3/f354fb989de64a7c9d31392d28e5104e/FLAG059b4619b [2022-07-21 01:48:40,652 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:48:40,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2022-07-21 01:48:40,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555b246e3/f354fb989de64a7c9d31392d28e5104e/FLAG059b4619b [2022-07-21 01:48:41,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555b246e3/f354fb989de64a7c9d31392d28e5104e [2022-07-21 01:48:41,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:48:41,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:48:41,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:48:41,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:48:41,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:48:41,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35689668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41, skipping insertion in model container [2022-07-21 01:48:41,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:48:41,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:48:41,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2022-07-21 01:48:41,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:48:41,235 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:48:41,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2022-07-21 01:48:41,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:48:41,298 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:48:41,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41 WrapperNode [2022-07-21 01:48:41,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:48:41,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:48:41,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:48:41,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:48:41,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,354 INFO L137 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2022-07-21 01:48:41,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:48:41,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:48:41,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:48:41,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:48:41,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:48:41,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:48:41,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:48:41,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:48:41,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (1/1) ... [2022-07-21 01:48:41,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:48:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:48:41,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:48:41,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:48:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:48:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:48:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:48:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-07-21 01:48:41,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-07-21 01:48:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-21 01:48:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:48:41,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:48:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 01:48:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:48:41,560 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:48:41,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:48:41,765 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:48:41,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:48:41,770 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 01:48:41,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:41 BoogieIcfgContainer [2022-07-21 01:48:41,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:48:41,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:48:41,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:48:41,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:48:41,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:48:41" (1/3) ... [2022-07-21 01:48:41,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc871ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:48:41, skipping insertion in model container [2022-07-21 01:48:41,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:41" (2/3) ... [2022-07-21 01:48:41,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc871ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:48:41, skipping insertion in model container [2022-07-21 01:48:41,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:41" (3/3) ... [2022-07-21 01:48:41,778 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2022-07-21 01:48:41,798 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:48:41,798 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:48:41,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:48:41,883 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@5f86bf86, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e847a5e [2022-07-21 01:48:41,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:48:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:48:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 01:48:41,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:41,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:41,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash 525089809, now seen corresponding path program 1 times [2022-07-21 01:48:41,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:48:41,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421201850] [2022-07-21 01:48:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:48:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:48:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:42,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:48:42,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421201850] [2022-07-21 01:48:42,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421201850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:42,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:42,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:48:42,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250717835] [2022-07-21 01:48:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:48:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:48:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:48:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:48:42,092 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:42,134 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-07-21 01:48:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:48:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-21 01:48:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:42,143 INFO L225 Difference]: With dead ends: 51 [2022-07-21 01:48:42,143 INFO L226 Difference]: Without dead ends: 24 [2022-07-21 01:48:42,146 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 [2022-07-21 01:48:42,149 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:42,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-21 01:48:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-21 01:48:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:48:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-07-21 01:48:42,191 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 14 [2022-07-21 01:48:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:42,191 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-07-21 01:48:42,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-07-21 01:48:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 01:48:42,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:42,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:48:42,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -395826406, now seen corresponding path program 1 times [2022-07-21 01:48:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:48:42,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410142502] [2022-07-21 01:48:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:48:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:48:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:42,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:48:42,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410142502] [2022-07-21 01:48:42,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410142502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:42,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:42,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:48:42,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94926730] [2022-07-21 01:48:42,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:42,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:48:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:48:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:48:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,382 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:42,423 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-07-21 01:48:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:48:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-21 01:48:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:42,428 INFO L225 Difference]: With dead ends: 33 [2022-07-21 01:48:42,428 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 01:48:42,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,435 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:42,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 99 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 01:48:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-21 01:48:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-21 01:48:42,456 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 15 [2022-07-21 01:48:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:42,460 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-21 01:48:42,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-21 01:48:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 01:48:42,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:42,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:48:42,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1214793076, now seen corresponding path program 1 times [2022-07-21 01:48:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:48:42,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966477314] [2022-07-21 01:48:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:48:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:48:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:48:42,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966477314] [2022-07-21 01:48:42,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966477314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:42,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:42,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:48:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113022213] [2022-07-21 01:48:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:42,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:48:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:48:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:48:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,575 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:42,602 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-21 01:48:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:48:42,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-21 01:48:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:42,604 INFO L225 Difference]: With dead ends: 37 [2022-07-21 01:48:42,604 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 01:48:42,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,606 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:42,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 01:48:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-21 01:48:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-21 01:48:42,611 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 16 [2022-07-21 01:48:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:42,612 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-21 01:48:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-21 01:48:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 01:48:42,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:42,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 01:48:42,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:42,614 INFO L85 PathProgramCache]: Analyzing trace with hash 964506206, now seen corresponding path program 1 times [2022-07-21 01:48:42,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:48:42,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730592417] [2022-07-21 01:48:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:42,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:48:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:48:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:42,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:48:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730592417] [2022-07-21 01:48:42,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730592417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:42,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:42,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:48:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878678018] [2022-07-21 01:48:42,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:42,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:48:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:48:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:48:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,718 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:42,746 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-21 01:48:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:48:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-21 01:48:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:42,747 INFO L225 Difference]: With dead ends: 37 [2022-07-21 01:48:42,747 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 01:48:42,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,749 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:42,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 01:48:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-21 01:48:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-21 01:48:42,754 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2022-07-21 01:48:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:42,754 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-21 01:48:42,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-21 01:48:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:48:42,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:42,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 01:48:42,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1139302728, now seen corresponding path program 1 times [2022-07-21 01:48:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:48:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142740171] [2022-07-21 01:48:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:48:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:48:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:48:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142740171] [2022-07-21 01:48:42,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142740171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:42,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:48:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271891094] [2022-07-21 01:48:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:48:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:48:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:48:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,848 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:42,888 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-21 01:48:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:48:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-21 01:48:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:42,890 INFO L225 Difference]: With dead ends: 37 [2022-07-21 01:48:42,890 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 01:48:42,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:48:42,896 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:42,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 01:48:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-07-21 01:48:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-21 01:48:42,909 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 18 [2022-07-21 01:48:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:42,910 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-21 01:48:42,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-21 01:48:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:48:42,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:42,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 01:48:42,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1348210105, now seen corresponding path program 1 times [2022-07-21 01:48:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:48:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698729111] [2022-07-21 01:48:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:48:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:48:42,966 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:48:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:48:43,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:48:43,021 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:48:43,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:48:43,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 01:48:43,027 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-21 01:48:43,029 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:48:43,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:48:43 BoogieIcfgContainer [2022-07-21 01:48:43,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:48:43,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:48:43,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:48:43,053 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:48:43,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:41" (3/4) ... [2022-07-21 01:48:43,061 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:48:43,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:48:43,065 INFO L158 Benchmark]: Toolchain (without parser) took 2011.16ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 43.6MB in the beginning and 71.9MB in the end (delta: -28.3MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2022-07-21 01:48:43,066 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:48:43,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.52ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 47.0MB in the end (delta: -3.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 01:48:43,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.21ms. Allocated memory is still 62.9MB. Free memory was 47.0MB in the beginning and 45.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:48:43,067 INFO L158 Benchmark]: Boogie Preprocessor took 43.02ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 44.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:48:43,067 INFO L158 Benchmark]: RCFGBuilder took 371.84ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 33.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 01:48:43,068 INFO L158 Benchmark]: TraceAbstraction took 1279.30ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 32.5MB in the beginning and 34.9MB in the end (delta: -2.4MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-07-21 01:48:43,068 INFO L158 Benchmark]: Witness Printer took 8.61ms. Allocated memory is still 90.2MB. Free memory was 34.9MB in the beginning and 71.9MB in the end (delta: -37.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:48:43,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.52ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 47.0MB in the end (delta: -3.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.21ms. Allocated memory is still 62.9MB. Free memory was 47.0MB in the beginning and 45.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.02ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 44.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.84ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 33.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1279.30ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 32.5MB in the beginning and 34.9MB in the end (delta: -2.4MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Witness Printer took 8.61ms. Allocated memory is still 90.2MB. Free memory was 34.9MB in the beginning and 71.9MB in the end (delta: -37.0MB). 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: 68]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L65] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967299] [L20] __uint32_t msw, lsw; VAL [\old(x)=4294967299, x=4294967299] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967299, lsw=4294967297, msw=4293918721, x=4294967299] [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967299, lsw=4294967297, msw=4293918721, x=4294967299] [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967299, lsw=4294967297, msw=4293918721, x=4294967299] [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; VAL [\old(x)=4294967299, \result=0, lsw=4294967297, msw=4293918721, x=4294967299] [L47] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967299, \old(y)=4294967298, __fpclassify_double(x)=0, x=4294967299, y=4294967298] [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; VAL [\old(x)=4294967299, \old(y)=4294967298, \result=4294967298, x=4294967299, y=4294967298] [L65] RET, EXPR fmin_double(x, y) [L65] double res = fmin_double(x, y); [L67] CALL, EXPR isnan_double(res) [L18] return x != x; VAL [\old(x)=4294967298, \result=0, x=4294967298] [L67] RET, EXPR isnan_double(res) [L67] COND TRUE !isnan_double(res) [L68] reach_error() VAL [res=4294967298, x=4294967299, y=4294967298] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 160 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:48:43,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1230.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 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:48:45,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:48:45,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:48:45,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:48:45,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:48:45,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:48:45,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:48:45,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:48:45,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:48:45,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:48:45,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:48:45,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:48:45,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:48:45,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:48:45,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:48:45,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:48:45,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:48:45,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:48:45,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:48:45,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:48:45,187 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:48:45,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:48:45,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:48:45,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:48:45,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:48:45,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:48:45,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:48:45,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:48:45,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:48:45,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:48:45,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:48:45,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:48:45,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:48:45,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:48:45,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:48:45,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:48:45,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:48:45,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:48:45,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:48:45,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:48:45,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:48:45,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:48:45,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:48:45,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:48:45,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:48:45,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:48:45,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:48:45,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:48:45,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:48:45,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:48:45,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:48:45,250 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:48:45,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:48:45,251 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:48:45,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:48:45,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:48:45,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:48:45,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:48:45,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:48:45,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:48:45,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:48:45,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:48:45,253 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:48:45,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:48:45,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:48:45,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:48:45,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:48:45,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:48:45,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:48:45,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:48:45,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:48:45,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:48:45,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:48:45,256 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:48:45,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:48:45,256 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:48:45,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:48:45,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:48:45,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:48:45,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 [2022-07-21 01:48:45,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:48:45,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:48:45,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:48:45,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:48:45,614 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:48:45,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2022-07-21 01:48:45,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65b05ad2/80a4a2b747b440f3be31608dd1286dbd/FLAG710e05e26 [2022-07-21 01:48:46,136 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:48:46,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2022-07-21 01:48:46,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65b05ad2/80a4a2b747b440f3be31608dd1286dbd/FLAG710e05e26 [2022-07-21 01:48:46,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65b05ad2/80a4a2b747b440f3be31608dd1286dbd [2022-07-21 01:48:46,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:48:46,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:48:46,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:48:46,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:48:46,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:48:46,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5979e239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46, skipping insertion in model container [2022-07-21 01:48:46,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:48:46,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:48:46,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2022-07-21 01:48:46,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:48:46,353 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:48:46,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2022-07-21 01:48:46,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:48:46,421 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:48:46,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46 WrapperNode [2022-07-21 01:48:46,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:48:46,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:48:46,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:48:46,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:48:46,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,467 INFO L137 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2022-07-21 01:48:46,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:48:46,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:48:46,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:48:46,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:48:46,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:48:46,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:48:46,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:48:46,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:48:46,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (1/1) ... [2022-07-21 01:48:46,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:48:46,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:48:46,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:48:46,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:48:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:48:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-21 01:48:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:48:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:48:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-07-21 01:48:46,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-07-21 01:48:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 01:48:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:48:46,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:48:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:48:46,691 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:48:46,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:48:46,874 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:48:46,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:48:46,879 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 01:48:46,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:46 BoogieIcfgContainer [2022-07-21 01:48:46,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:48:46,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:48:46,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:48:46,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:48:46,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:48:46" (1/3) ... [2022-07-21 01:48:46,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d8315b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:48:46, skipping insertion in model container [2022-07-21 01:48:46,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:46" (2/3) ... [2022-07-21 01:48:46,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d8315b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:48:46, skipping insertion in model container [2022-07-21 01:48:46,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:46" (3/3) ... [2022-07-21 01:48:46,890 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2022-07-21 01:48:46,907 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:48:46,908 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:48:46,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:48:47,017 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@3aeff96d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f2c9458 [2022-07-21 01:48:47,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:48:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:48:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 01:48:47,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:47,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:47,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 369317884, now seen corresponding path program 1 times [2022-07-21 01:48:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996894991] [2022-07-21 01:48:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:47,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:47,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:47,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:48:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:47,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:48:47,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:47,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:47,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:47,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996894991] [2022-07-21 01:48:47,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996894991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:47,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:47,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:48:47,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508396062] [2022-07-21 01:48:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:48:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:48:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:48:47,255 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:47,275 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2022-07-21 01:48:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:48:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-07-21 01:48:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:47,284 INFO L225 Difference]: With dead ends: 47 [2022-07-21 01:48:47,284 INFO L226 Difference]: Without dead ends: 22 [2022-07-21 01:48:47,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:48:47,291 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:47,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:47,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-21 01:48:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-21 01:48:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:48:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-07-21 01:48:47,334 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2022-07-21 01:48:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:47,335 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-07-21 01:48:47,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-07-21 01:48:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 01:48:47,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:47,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:47,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:47,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1711341929, now seen corresponding path program 1 times [2022-07-21 01:48:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:47,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950601235] [2022-07-21 01:48:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:47,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:47,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:47,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:47,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:48:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:47,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:47,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:47,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:47,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:47,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950601235] [2022-07-21 01:48:47,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950601235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:47,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:47,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759229515] [2022-07-21 01:48:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:47,696 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:47,735 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-07-21 01:48:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-21 01:48:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:47,738 INFO L225 Difference]: With dead ends: 30 [2022-07-21 01:48:47,738 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 01:48:47,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:47,740 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:47,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 01:48:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-21 01:48:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-21 01:48:47,746 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2022-07-21 01:48:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:47,747 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-21 01:48:47,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-21 01:48:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 01:48:47,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:47,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:47,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:47,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:47,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:47,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2061340999, now seen corresponding path program 1 times [2022-07-21 01:48:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:47,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558141145] [2022-07-21 01:48:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:47,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:47,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:47,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:48:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:48,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:48,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:48,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:48,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:48,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558141145] [2022-07-21 01:48:48,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558141145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:48,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:48,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:48,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477567194] [2022-07-21 01:48:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:48,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:48,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:48,065 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:48,093 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-07-21 01:48:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-21 01:48:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:48,095 INFO L225 Difference]: With dead ends: 33 [2022-07-21 01:48:48,095 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 01:48:48,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:48,097 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:48,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 01:48:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-21 01:48:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-21 01:48:48,102 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 15 [2022-07-21 01:48:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:48,103 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-21 01:48:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-21 01:48:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 01:48:48,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:48,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:48,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:48,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1645103533, now seen corresponding path program 1 times [2022-07-21 01:48:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273717321] [2022-07-21 01:48:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:48,315 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) [2022-07-21 01:48:48,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 01:48:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:48,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:48,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:48,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:48,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:48,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273717321] [2022-07-21 01:48:48,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273717321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:48,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:48,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:48,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862324529] [2022-07-21 01:48:48,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:48,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:48,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:48,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:48,410 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:48,492 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-07-21 01:48:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:48,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-21 01:48:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:48,494 INFO L225 Difference]: With dead ends: 33 [2022-07-21 01:48:48,494 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 01:48:48,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:48,495 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:48,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:48:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 01:48:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-21 01:48:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-21 01:48:48,501 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 16 [2022-07-21 01:48:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:48,501 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-21 01:48:48,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-21 01:48:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 01:48:48,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:48,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:48,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:48,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:48,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1049630069, now seen corresponding path program 1 times [2022-07-21 01:48:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:48,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104237234] [2022-07-21 01:48:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:48,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:48,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:48,708 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) [2022-07-21 01:48:48,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 01:48:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:48,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:48,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:48,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:48,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:48,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104237234] [2022-07-21 01:48:48,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104237234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:48,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:48,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497551863] [2022-07-21 01:48:48,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:48,795 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:48,857 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-07-21 01:48:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-21 01:48:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:48,858 INFO L225 Difference]: With dead ends: 33 [2022-07-21 01:48:48,858 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 01:48:48,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:48,859 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:48,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:48:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 01:48:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-21 01:48:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-21 01:48:48,864 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 17 [2022-07-21 01:48:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:48,868 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-21 01:48:48,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-21 01:48:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 01:48:48,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:48,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:48,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:49,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1502526892, now seen corresponding path program 1 times [2022-07-21 01:48:49,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717044767] [2022-07-21 01:48:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:49,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:49,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:49,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:49,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 01:48:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:49,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:48:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:48:49,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:49,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:49,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717044767] [2022-07-21 01:48:49,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717044767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:49,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:49,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 01:48:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083018412] [2022-07-21 01:48:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:49,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:48:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:48:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:48:49,268 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:49,309 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-07-21 01:48:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:48:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-21 01:48:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:49,310 INFO L225 Difference]: With dead ends: 35 [2022-07-21 01:48:49,310 INFO L226 Difference]: Without dead ends: 30 [2022-07-21 01:48:49,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:48:49,312 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:49,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-07-21 01:48:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-21 01:48:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2022-07-21 01:48:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:48:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-07-21 01:48:49,316 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 17 [2022-07-21 01:48:49,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:49,316 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-07-21 01:48:49,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:48:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-07-21 01:48:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:48:49,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:49,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:49,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:49,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -451389748, now seen corresponding path program 1 times [2022-07-21 01:48:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872867212] [2022-07-21 01:48:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:49,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:49,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:49,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:49,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 01:48:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:49,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:49,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:48:49,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:49,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:49,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872867212] [2022-07-21 01:48:49,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872867212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:49,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:49,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:49,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211005139] [2022-07-21 01:48:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:49,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:49,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:49,642 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:49,709 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-07-21 01:48:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-07-21 01:48:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:49,711 INFO L225 Difference]: With dead ends: 30 [2022-07-21 01:48:49,711 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 01:48:49,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:49,712 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:49,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:48:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 01:48:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-21 01:48:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-21 01:48:49,717 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 22 [2022-07-21 01:48:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:49,718 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-21 01:48:49,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-21 01:48:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 01:48:49,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:49,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:49,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-21 01:48:49,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:49,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash 753455404, now seen corresponding path program 1 times [2022-07-21 01:48:49,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271750726] [2022-07-21 01:48:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:49,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:49,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:49,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 01:48:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:50,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:50,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:48:50,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:50,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:50,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271750726] [2022-07-21 01:48:50,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271750726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:50,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:50,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173869229] [2022-07-21 01:48:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:50,042 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:50,091 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-07-21 01:48:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-21 01:48:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:50,092 INFO L225 Difference]: With dead ends: 33 [2022-07-21 01:48:50,092 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 01:48:50,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:50,093 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:50,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 01:48:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-21 01:48:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-21 01:48:50,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 23 [2022-07-21 01:48:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:50,098 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-21 01:48:50,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-21 01:48:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 01:48:50,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:50,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:50,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 01:48:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:50,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2125223496, now seen corresponding path program 1 times [2022-07-21 01:48:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:50,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127612236] [2022-07-21 01:48:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:50,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:50,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 01:48:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:50,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:50,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:48:50,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:50,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:50,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127612236] [2022-07-21 01:48:50,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127612236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:50,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:50,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981083436] [2022-07-21 01:48:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:50,417 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:50,491 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-07-21 01:48:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:50,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-21 01:48:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:50,492 INFO L225 Difference]: With dead ends: 33 [2022-07-21 01:48:50,492 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 01:48:50,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:50,493 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:50,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:48:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 01:48:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-21 01:48:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-21 01:48:50,498 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 24 [2022-07-21 01:48:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:50,498 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-21 01:48:50,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-21 01:48:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 01:48:50,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:50,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:50,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:50,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:50,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:50,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1662794800, now seen corresponding path program 1 times [2022-07-21 01:48:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:50,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777550010] [2022-07-21 01:48:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:50,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:50,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:50,714 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:50,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 01:48:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:50,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 01:48:50,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 01:48:50,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:50,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777550010] [2022-07-21 01:48:50,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777550010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:50,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:50,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 01:48:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462847652] [2022-07-21 01:48:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:50,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 01:48:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 01:48:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:48:50,939 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:50,976 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-07-21 01:48:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 01:48:50,976 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-21 01:48:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:50,977 INFO L225 Difference]: With dead ends: 32 [2022-07-21 01:48:50,977 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 01:48:50,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 01:48:50,978 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:50,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 125 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-07-21 01:48:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 01:48:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-21 01:48:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 01:48:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-07-21 01:48:50,982 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 24 [2022-07-21 01:48:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:50,983 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-07-21 01:48:50,983 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-07-21 01:48:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 01:48:50,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:50,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:50,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:51,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:51,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1605536498, now seen corresponding path program 1 times [2022-07-21 01:48:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:51,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329373189] [2022-07-21 01:48:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:51,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:51,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:51,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 01:48:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:51,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 01:48:51,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 01:48:51,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:51,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:51,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329373189] [2022-07-21 01:48:51,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329373189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:51,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:51,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:48:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709636176] [2022-07-21 01:48:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:48:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:48:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:48:51,352 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:51,353 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-07-21 01:48:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:48:51,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-21 01:48:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:51,355 INFO L225 Difference]: With dead ends: 30 [2022-07-21 01:48:51,355 INFO L226 Difference]: Without dead ends: 22 [2022-07-21 01:48:51,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:48:51,356 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:51,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-07-21 01:48:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-21 01:48:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-21 01:48:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 01:48:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-21 01:48:51,360 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2022-07-21 01:48:51,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:51,360 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-21 01:48:51,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-21 01:48:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 01:48:51,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:51,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:51,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-21 01:48:51,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:51,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash 81668136, now seen corresponding path program 1 times [2022-07-21 01:48:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:51,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351745449] [2022-07-21 01:48:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:51,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:51,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:51,575 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:51,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 01:48:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:51,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 01:48:51,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:48:51,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:51,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351745449] [2022-07-21 01:48:51,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351745449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:51,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:51,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:48:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468284274] [2022-07-21 01:48:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:51,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:48:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:48:51,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:51,686 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:51,717 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-21 01:48:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:48:51,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-21 01:48:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:51,718 INFO L225 Difference]: With dead ends: 30 [2022-07-21 01:48:51,718 INFO L226 Difference]: Without dead ends: 24 [2022-07-21 01:48:51,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:48:51,719 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:51,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:48:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-21 01:48:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-07-21 01:48:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 01:48:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-21 01:48:51,722 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 25 [2022-07-21 01:48:51,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:51,722 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-21 01:48:51,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-21 01:48:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 01:48:51,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:48:51,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:51,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:51,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:51,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:48:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:48:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1824478471, now seen corresponding path program 1 times [2022-07-21 01:48:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:48:51,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783594084] [2022-07-21 01:48:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:48:51,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:48:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:48:51,937 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:48:51,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 01:48:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:48:52,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:48:52,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:48:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 01:48:52,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:48:52,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:48:52,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783594084] [2022-07-21 01:48:52,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783594084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:48:52,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:48:52,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 01:48:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892230413] [2022-07-21 01:48:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:48:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:48:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:48:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:48:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:48:52,136 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:52,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:48:52,162 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-21 01:48:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:48:52,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-21 01:48:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:48:52,163 INFO L225 Difference]: With dead ends: 22 [2022-07-21 01:48:52,163 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 01:48:52,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:48:52,164 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:48:52,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 85 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-07-21 01:48:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 01:48:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 01:48:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:48:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 01:48:52,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-07-21 01:48:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:48:52,165 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 01:48:52,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:48:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 01:48:52,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 01:48:52,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:48:52,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 01:48:52,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:48:52,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 19 44) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L902 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 19 44) the Hoare annotation is: true [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 19 44) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L902 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: true [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2022-07-21 01:48:52,419 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L895 garLoopResultBuilder]: At program point L52-3(lines 46 53) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2022-07-21 01:48:52,420 INFO L895 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res#1|) [2022-07-21 01:48:52,420 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~x#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2022-07-21 01:48:52,420 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 50) no Hoare annotation was computed. [2022-07-21 01:48:52,421 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_~x#1| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2022-07-21 01:48:52,421 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2022-07-21 01:48:52,421 INFO L902 garLoopResultBuilder]: At program point L72(lines 55 73) the Hoare annotation is: true [2022-07-21 01:48:52,421 INFO L899 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2022-07-21 01:48:52,423 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:48:52,425 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:48:52,435 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:48:52,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:48:52,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:48:52 BoogieIcfgContainer [2022-07-21 01:48:52,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:48:52,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:48:52,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:48:52,437 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:48:52,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:46" (3/4) ... [2022-07-21 01:48:52,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 01:48:52,445 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2022-07-21 01:48:52,449 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-21 01:48:52,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-21 01:48:52,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 01:48:52,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 01:48:52,475 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2022-07-21 01:48:52,475 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2022-07-21 01:48:52,483 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 01:48:52,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:48:52,484 INFO L158 Benchmark]: Toolchain (without parser) took 6308.15ms. Allocated memory was 54.5MB in the beginning and 86.0MB in the end (delta: 31.5MB). Free memory was 32.1MB in the beginning and 66.5MB in the end (delta: -34.4MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-07-21 01:48:52,484 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 54.5MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:48:52,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.85ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.9MB in the beginning and 54.0MB in the end (delta: -22.2MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-21 01:48:52,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.04ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 52.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:48:52,485 INFO L158 Benchmark]: Boogie Preprocessor took 56.62ms. Allocated memory is still 71.3MB. Free memory was 52.4MB in the beginning and 50.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:48:52,485 INFO L158 Benchmark]: RCFGBuilder took 354.90ms. Allocated memory is still 71.3MB. Free memory was 50.9MB in the beginning and 39.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 01:48:52,486 INFO L158 Benchmark]: TraceAbstraction took 5554.01ms. Allocated memory is still 71.3MB. Free memory was 39.2MB in the beginning and 27.4MB in the end (delta: 11.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-07-21 01:48:52,486 INFO L158 Benchmark]: Witness Printer took 46.49ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 27.4MB in the beginning and 66.5MB in the end (delta: -39.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:48:52,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 54.5MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.85ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.9MB in the beginning and 54.0MB in the end (delta: -22.2MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.04ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 52.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.62ms. Allocated memory is still 71.3MB. Free memory was 52.4MB in the beginning and 50.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 354.90ms. Allocated memory is still 71.3MB. Free memory was 50.9MB in the beginning and 39.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5554.01ms. Allocated memory is still 71.3MB. Free memory was 39.2MB in the beginning and 27.4MB in the end (delta: 11.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 46.49ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 27.4MB in the beginning and 66.5MB in the end (delta: -39.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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 - PositiveResult [Line: 68]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1022 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 44 IncrementalHoareTripleChecker+Unchecked, 659 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 363 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 26 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 43 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 246 ConstructedInterpolants, 20 QuantifiedInterpolants, 426 SizeOfPredicates, 32 NumberOfNonLiveVariables, 965 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 46]: Loop Invariant [2022-07-21 01:48:52,494 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:48:52,494 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 01:48:52,523 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 Writing output log to file Ultimate.log Result: TRUE