./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_vararg_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/array-examples/standard_vararg_ground.i -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 28ac72543f751666908cbd68a77fa11ffe4dd886016c3996df45b97bb42d5078 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 22:08:41,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 22:08:41,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 22:08:41,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 22:08:41,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 22:08:41,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 22:08:41,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 22:08:41,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 22:08:41,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 22:08:41,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 22:08:41,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 22:08:41,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 22:08:41,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 22:08:41,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 22:08:41,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 22:08:41,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 22:08:41,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 22:08:41,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 22:08:41,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 22:08:41,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 22:08:41,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 22:08:41,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 22:08:41,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 22:08:41,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 22:08:41,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 22:08:41,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 22:08:41,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 22:08:41,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 22:08:41,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 22:08:41,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 22:08:41,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 22:08:41,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 22:08:41,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 22:08:41,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 22:08:41,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 22:08:41,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 22:08:41,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 22:08:41,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 22:08:41,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 22:08:41,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 22:08:41,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 22:08:41,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 22:08:41,733 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 22:08:41,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 22:08:41,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 22:08:41,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 22:08:41,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 22:08:41,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 22:08:41,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 22:08:41,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 22:08:41,736 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 22:08:41,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 22:08:41,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 22:08:41,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 22:08:41,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 22:08:41,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 22:08:41,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 22:08:41,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 22:08:41,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 22:08:41,738 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 22:08:41,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 22:08:41,738 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 22:08:41,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 22:08:41,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 22:08:41,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 22:08:41,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 22:08:41,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 22:08:41,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 22:08:41,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 22:08:41,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 22:08:41,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 22:08:41,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 22:08:41,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 22:08:41,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 22:08:41,741 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 22:08:41,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 22:08:41,742 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 22:08:41,742 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28ac72543f751666908cbd68a77fa11ffe4dd886016c3996df45b97bb42d5078 [2023-02-13 22:08:41,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 22:08:41,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 22:08:41,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 22:08:41,954 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 22:08:41,954 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 22:08:41,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_vararg_ground.i [2023-02-13 22:08:43,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 22:08:43,344 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 22:08:43,345 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i [2023-02-13 22:08:43,350 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cad2b8f/cfad8b73a44449788cb1eb4eee645614/FLAGf0a697cde [2023-02-13 22:08:43,369 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cad2b8f/cfad8b73a44449788cb1eb4eee645614 [2023-02-13 22:08:43,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 22:08:43,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 22:08:43,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 22:08:43,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 22:08:43,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 22:08:43,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38333a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43, skipping insertion in model container [2023-02-13 22:08:43,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 22:08:43,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 22:08:43,513 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i[815,828] [2023-02-13 22:08:43,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 22:08:43,532 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 22:08:43,543 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i[815,828] [2023-02-13 22:08:43,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 22:08:43,566 INFO L208 MainTranslator]: Completed translation [2023-02-13 22:08:43,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43 WrapperNode [2023-02-13 22:08:43,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 22:08:43,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 22:08:43,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 22:08:43,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 22:08:43,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,598 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-02-13 22:08:43,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 22:08:43,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 22:08:43,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 22:08:43,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 22:08:43,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,616 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 22:08:43,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 22:08:43,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 22:08:43,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 22:08:43,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (1/1) ... [2023-02-13 22:08:43,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 22:08:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:43,646 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) [2023-02-13 22:08:43,657 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 [2023-02-13 22:08:43,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 22:08:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 22:08:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-13 22:08:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-13 22:08:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 22:08:43,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 22:08:43,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-13 22:08:43,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-13 22:08:43,738 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 22:08:43,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 22:08:43,826 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 22:08:43,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 22:08:43,832 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-13 22:08:43,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 10:08:43 BoogieIcfgContainer [2023-02-13 22:08:43,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 22:08:43,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 22:08:43,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 22:08:43,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 22:08:43,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 10:08:43" (1/3) ... [2023-02-13 22:08:43,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189ee7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 10:08:43, skipping insertion in model container [2023-02-13 22:08:43,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:08:43" (2/3) ... [2023-02-13 22:08:43,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189ee7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 10:08:43, skipping insertion in model container [2023-02-13 22:08:43,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 10:08:43" (3/3) ... [2023-02-13 22:08:43,866 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_vararg_ground.i [2023-02-13 22:08:43,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 22:08:43,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-13 22:08:43,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 22:08:43,947 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@660c4ab4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 22:08:43,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-13 22:08:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-13 22:08:43,973 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:43,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:43,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 221467647, now seen corresponding path program 1 times [2023-02-13 22:08:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:43,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172861899] [2023-02-13 22:08:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:08:44,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:44,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172861899] [2023-02-13 22:08:44,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172861899] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 22:08:44,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 22:08:44,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 22:08:44,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425588881] [2023-02-13 22:08:44,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 22:08:44,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 22:08:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 22:08:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 22:08:44,258 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-13 22:08:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:44,298 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2023-02-13 22:08:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 22:08:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-13 22:08:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:44,306 INFO L225 Difference]: With dead ends: 32 [2023-02-13 22:08:44,306 INFO L226 Difference]: Without dead ends: 15 [2023-02-13 22:08:44,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 22:08:44,313 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:44,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:08:44,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-13 22:08:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-02-13 22:08:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-02-13 22:08:44,342 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2023-02-13 22:08:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:44,343 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-02-13 22:08:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-02-13 22:08:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-02-13 22:08:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-13 22:08:44,344 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:44,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:44,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-13 22:08:44,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1650471280, now seen corresponding path program 1 times [2023-02-13 22:08:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:44,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858574833] [2023-02-13 22:08:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:08:44,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:44,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858574833] [2023-02-13 22:08:44,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858574833] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:08:44,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140142398] [2023-02-13 22:08:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:44,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:44,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:08:44,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 22:08:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:44,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-13 22:08:44,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:08:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:08:44,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:08:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:08:44,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140142398] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:08:44,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:08:44,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-13 22:08:44,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054470186] [2023-02-13 22:08:44,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:08:44,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-13 22:08:44,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-13 22:08:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-13 22:08:44,670 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:44,703 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2023-02-13 22:08:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-13 22:08:44,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-13 22:08:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:44,708 INFO L225 Difference]: With dead ends: 29 [2023-02-13 22:08:44,708 INFO L226 Difference]: Without dead ends: 20 [2023-02-13 22:08:44,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-13 22:08:44,711 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:44,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:08:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-13 22:08:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-13 22:08:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-02-13 22:08:44,725 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2023-02-13 22:08:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:44,725 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-02-13 22:08:44,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-02-13 22:08:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-13 22:08:44,726 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:44,726 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:44,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-13 22:08:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:44,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash 77278250, now seen corresponding path program 2 times [2023-02-13 22:08:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:44,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092581987] [2023-02-13 22:08:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:44,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-13 22:08:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:45,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092581987] [2023-02-13 22:08:45,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092581987] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 22:08:45,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 22:08:45,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-13 22:08:45,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816069997] [2023-02-13 22:08:45,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 22:08:45,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 22:08:45,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 22:08:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 22:08:45,022 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:45,033 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-02-13 22:08:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 22:08:45,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-13 22:08:45,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:45,034 INFO L225 Difference]: With dead ends: 30 [2023-02-13 22:08:45,034 INFO L226 Difference]: Without dead ends: 22 [2023-02-13 22:08:45,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 22:08:45,035 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:45,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:08:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-13 22:08:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-13 22:08:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-13 22:08:45,040 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2023-02-13 22:08:45,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:45,045 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-13 22:08:45,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-13 22:08:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-13 22:08:45,046 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:45,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:45,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-13 22:08:45,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1540928625, now seen corresponding path program 1 times [2023-02-13 22:08:45,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:45,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250411981] [2023-02-13 22:08:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:45,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250411981] [2023-02-13 22:08:45,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250411981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:08:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126878781] [2023-02-13 22:08:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:45,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:45,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:45,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:08:45,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 22:08:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:45,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-13 22:08:45,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:08:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:45,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:08:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:45,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126878781] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:08:45,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:08:45,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-13 22:08:45,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054375470] [2023-02-13 22:08:45,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:08:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-13 22:08:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-13 22:08:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-13 22:08:45,319 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:45,353 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-02-13 22:08:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-13 22:08:45,354 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-13 22:08:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:45,355 INFO L225 Difference]: With dead ends: 45 [2023-02-13 22:08:45,355 INFO L226 Difference]: Without dead ends: 34 [2023-02-13 22:08:45,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-13 22:08:45,356 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:45,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:08:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-13 22:08:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-02-13 22:08:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 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) [2023-02-13 22:08:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2023-02-13 22:08:45,361 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 19 [2023-02-13 22:08:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:45,362 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2023-02-13 22:08:45,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2023-02-13 22:08:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-13 22:08:45,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:45,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:45,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-13 22:08:45,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-13 22:08:45,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1100375677, now seen corresponding path program 2 times [2023-02-13 22:08:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169632358] [2023-02-13 22:08:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:45,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169632358] [2023-02-13 22:08:45,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169632358] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:08:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967362723] [2023-02-13 22:08:45,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 22:08:45,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:45,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:45,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:08:45,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-13 22:08:45,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 22:08:45,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:08:45,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-13 22:08:45,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:08:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:45,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:08:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:46,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967362723] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:08:46,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:08:46,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-13 22:08:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308525038] [2023-02-13 22:08:46,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:08:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-13 22:08:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:46,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-13 22:08:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-13 22:08:46,140 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 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) [2023-02-13 22:08:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:46,207 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2023-02-13 22:08:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-13 22:08:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-13 22:08:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:46,209 INFO L225 Difference]: With dead ends: 69 [2023-02-13 22:08:46,209 INFO L226 Difference]: Without dead ends: 58 [2023-02-13 22:08:46,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-13 22:08:46,210 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:46,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-13 22:08:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-13 22:08:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-13 22:08:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:08:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2023-02-13 22:08:46,218 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 31 [2023-02-13 22:08:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:46,218 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2023-02-13 22:08:46,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 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) [2023-02-13 22:08:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2023-02-13 22:08:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-13 22:08:46,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:46,220 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:46,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-13 22:08:46,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:46,426 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1124643989, now seen corresponding path program 3 times [2023-02-13 22:08:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:46,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270460653] [2023-02-13 22:08:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:46,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 22:08:46,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270460653] [2023-02-13 22:08:46,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270460653] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:08:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446113493] [2023-02-13 22:08:46,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-13 22:08:46,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:46,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:46,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:08:46,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-13 22:08:47,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-13 22:08:47,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:08:47,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-13 22:08:47,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:08:47,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-13 22:08:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-02-13 22:08:47,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:08:47,454 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-02-13 22:08:47,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2023-02-13 22:08:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-02-13 22:08:47,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446113493] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:08:47,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:08:47,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2023-02-13 22:08:47,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002425836] [2023-02-13 22:08:47,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:08:47,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-13 22:08:47,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:47,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-13 22:08:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2023-02-13 22:08:47,540 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 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) [2023-02-13 22:08:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:48,146 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2023-02-13 22:08:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-13 22:08:48,146 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-02-13 22:08:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:48,147 INFO L225 Difference]: With dead ends: 77 [2023-02-13 22:08:48,147 INFO L226 Difference]: Without dead ends: 66 [2023-02-13 22:08:48,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=982, Invalid=2800, Unknown=0, NotChecked=0, Total=3782 [2023-02-13 22:08:48,149 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:48,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 85 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-13 22:08:48,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-13 22:08:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-02-13 22:08:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 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) [2023-02-13 22:08:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-02-13 22:08:48,156 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 55 [2023-02-13 22:08:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:48,157 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-02-13 22:08:48,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 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) [2023-02-13 22:08:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-02-13 22:08:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-13 22:08:48,159 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:48,159 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:48,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-13 22:08:48,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:48,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1539427871, now seen corresponding path program 1 times [2023-02-13 22:08:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:48,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213630083] [2023-02-13 22:08:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:08:48,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213630083] [2023-02-13 22:08:48,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213630083] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:08:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041146115] [2023-02-13 22:08:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:48,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:48,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:48,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:08:48,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-13 22:08:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:49,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-13 22:08:49,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:08:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:08:49,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:08:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:08:49,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041146115] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:08:49,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:08:49,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2023-02-13 22:08:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860715700] [2023-02-13 22:08:49,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:08:49,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-13 22:08:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:49,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-13 22:08:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-02-13 22:08:49,866 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 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) [2023-02-13 22:08:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:49,995 INFO L93 Difference]: Finished difference Result 125 states and 153 transitions. [2023-02-13 22:08:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-13 22:08:49,996 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-02-13 22:08:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:49,997 INFO L225 Difference]: With dead ends: 125 [2023-02-13 22:08:49,997 INFO L226 Difference]: Without dead ends: 112 [2023-02-13 22:08:49,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-02-13 22:08:49,999 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:49,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-13 22:08:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-13 22:08:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-02-13 22:08:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 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) [2023-02-13 22:08:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2023-02-13 22:08:50,010 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 61 [2023-02-13 22:08:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:50,010 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2023-02-13 22:08:50,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 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) [2023-02-13 22:08:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2023-02-13 22:08:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-02-13 22:08:50,012 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:50,012 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:50,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-13 22:08:50,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:50,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:50,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash 236610605, now seen corresponding path program 2 times [2023-02-13 22:08:50,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:50,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096275897] [2023-02-13 22:08:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:50,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:08:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:08:52,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:08:52,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096275897] [2023-02-13 22:08:52,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096275897] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:08:52,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53850590] [2023-02-13 22:08:52,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 22:08:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:08:52,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:08:52,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-13 22:08:52,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 22:08:52,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:08:52,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-13 22:08:52,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:08:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:08:52,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:08:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:08:54,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53850590] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:08:54,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:08:54,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2023-02-13 22:08:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553792303] [2023-02-13 22:08:54,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:08:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-02-13 22:08:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:08:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-02-13 22:08:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2023-02-13 22:08:54,951 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand has 101 states, 101 states have (on average 2.0792079207920793) internal successors, (210), 101 states have internal predecessors, (210), 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) [2023-02-13 22:08:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:08:55,237 INFO L93 Difference]: Finished difference Result 225 states and 278 transitions. [2023-02-13 22:08:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-02-13 22:08:55,237 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0792079207920793) internal successors, (210), 101 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-02-13 22:08:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:08:55,242 INFO L225 Difference]: With dead ends: 225 [2023-02-13 22:08:55,243 INFO L226 Difference]: Without dead ends: 212 [2023-02-13 22:08:55,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2023-02-13 22:08:55,246 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-13 22:08:55,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 90 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-13 22:08:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-13 22:08:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-02-13 22:08:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.014218009478673) internal successors, (214), 211 states have internal predecessors, (214), 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) [2023-02-13 22:08:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2023-02-13 22:08:55,272 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 111 [2023-02-13 22:08:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:08:55,272 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2023-02-13 22:08:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0792079207920793) internal successors, (210), 101 states have internal predecessors, (210), 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) [2023-02-13 22:08:55,273 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2023-02-13 22:08:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-02-13 22:08:55,275 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:08:55,275 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:08:55,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-13 22:08:55,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:08:55,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:08:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:08:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash -760163895, now seen corresponding path program 3 times [2023-02-13 22:08:55,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:08:55,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124284013] [2023-02-13 22:08:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:08:55,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:08:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:09:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9608 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:09:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:09:01,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124284013] [2023-02-13 22:09:01,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124284013] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:09:01,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479602255] [2023-02-13 22:09:01,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-13 22:09:01,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:09:01,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:09:01,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:09:01,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-13 22:09:01,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-13 22:09:01,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:09:01,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-13 22:09:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:09:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9608 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2023-02-13 22:09:01,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:09:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9608 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2023-02-13 22:09:01,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479602255] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:09:01,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:09:01,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 6, 6] total 107 [2023-02-13 22:09:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180933460] [2023-02-13 22:09:01,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:09:01,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-13 22:09:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:09:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-13 22:09:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6272, Unknown=0, NotChecked=0, Total=11342 [2023-02-13 22:09:01,886 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand has 107 states, 107 states have (on average 2.1401869158878504) internal successors, (229), 107 states have internal predecessors, (229), 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) [2023-02-13 22:09:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:09:05,710 INFO L93 Difference]: Finished difference Result 236 states and 241 transitions. [2023-02-13 22:09:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-02-13 22:09:05,711 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.1401869158878504) internal successors, (229), 107 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-02-13 22:09:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:09:05,712 INFO L225 Difference]: With dead ends: 236 [2023-02-13 22:09:05,712 INFO L226 Difference]: Without dead ends: 217 [2023-02-13 22:09:05,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 414 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5746 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=15267, Invalid=26963, Unknown=0, NotChecked=0, Total=42230 [2023-02-13 22:09:05,718 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-13 22:09:05,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 116 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-13 22:09:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-02-13 22:09:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2023-02-13 22:09:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.013953488372093) internal successors, (218), 215 states have internal predecessors, (218), 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) [2023-02-13 22:09:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2023-02-13 22:09:05,731 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 211 [2023-02-13 22:09:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:09:05,732 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2023-02-13 22:09:05,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.1401869158878504) internal successors, (229), 107 states have internal predecessors, (229), 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) [2023-02-13 22:09:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2023-02-13 22:09:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-02-13 22:09:05,735 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:09:05,735 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:09:05,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-13 22:09:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:09:05,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:09:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:09:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash 643219628, now seen corresponding path program 4 times [2023-02-13 22:09:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:09:05,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525004606] [2023-02-13 22:09:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:09:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:09:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:09:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9809 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-13 22:09:11,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:09:11,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525004606] [2023-02-13 22:09:11,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525004606] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:09:11,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636997126] [2023-02-13 22:09:11,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-13 22:09:11,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:09:11,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:09:11,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:09:11,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-13 22:09:11,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-13 22:09:11,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:09:11,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 101 conjunts are in the unsatisfiable core [2023-02-13 22:09:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:09:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9809 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-13 22:09:12,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:09:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9809 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-13 22:09:21,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636997126] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:09:21,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 22:09:21,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 203 [2023-02-13 22:09:21,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982694641] [2023-02-13 22:09:21,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 22:09:21,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2023-02-13 22:09:21,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:09:21,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2023-02-13 22:09:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2023-02-13 22:09:21,299 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand has 203 states, 203 states have (on average 2.039408866995074) internal successors, (414), 203 states have internal predecessors, (414), 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) [2023-02-13 22:09:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:09:22,134 INFO L93 Difference]: Finished difference Result 433 states and 537 transitions. [2023-02-13 22:09:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-02-13 22:09:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.039408866995074) internal successors, (414), 203 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2023-02-13 22:09:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:09:22,137 INFO L225 Difference]: With dead ends: 433 [2023-02-13 22:09:22,137 INFO L226 Difference]: Without dead ends: 418 [2023-02-13 22:09:22,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2023-02-13 22:09:22,140 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-13 22:09:22,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-13 22:09:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-02-13 22:09:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2023-02-13 22:09:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.0071942446043165) internal successors, (420), 417 states have internal predecessors, (420), 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) [2023-02-13 22:09:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 420 transitions. [2023-02-13 22:09:22,159 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 420 transitions. Word has length 215 [2023-02-13 22:09:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:09:22,159 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 420 transitions. [2023-02-13 22:09:22,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.039408866995074) internal successors, (414), 203 states have internal predecessors, (414), 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) [2023-02-13 22:09:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 420 transitions. [2023-02-13 22:09:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-02-13 22:09:22,166 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:09:22,166 INFO L195 NwaCegarLoop]: trace histogram [200, 200, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:09:22,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-13 22:09:22,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-13 22:09:22,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:09:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:09:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -53038942, now seen corresponding path program 5 times [2023-02-13 22:09:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:09:22,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96509879] [2023-02-13 22:09:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:09:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:09:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:09:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 40008 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-13 22:09:42,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:09:42,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96509879] [2023-02-13 22:09:42,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96509879] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 22:09:42,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574669208] [2023-02-13 22:09:42,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-13 22:09:42,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:09:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:09:42,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 22:09:42,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process