./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Ackermann04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:02:57,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:02:57,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:02:57,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:02:57,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:02:57,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:02:57,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:02:57,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:02:57,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:02:57,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:02:57,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:02:57,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:02:57,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:02:57,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:02:57,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:02:57,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:02:57,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:02:57,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:02:57,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:02:57,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:02:57,690 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:02:57,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:02:57,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:02:57,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:02:57,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:02:57,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:02:57,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:02:57,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:02:57,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:02:57,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:02:57,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:02:57,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:02:57,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:02:57,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:02:57,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:02:57,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:02:57,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:02:57,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:02:57,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:02:57,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:02:57,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:02:57,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:02:57,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:02:57,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:02:57,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:02:57,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:02:57,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:02:57,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:02:57,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:02:57,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:02:57,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:02:57,743 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:02:57,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:02:57,753 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:02:57,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:02:57,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:02:57,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:02:57,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:02:57,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:02:57,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:02:57,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:02:57,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:02:57,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:02:57,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:02:57,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:02:57,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:02:57,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:02:57,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:02:57,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:02:57,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:02:57,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 [2022-07-21 05:02:58,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:02:58,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:02:58,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:02:58,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:02:58,028 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:02:58,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann04.c [2022-07-21 05:02:58,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ba0d029/674c39b2aa6d41c2bf7d13f9412fbcb6/FLAG9283d738d [2022-07-21 05:02:58,444 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:02:58,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann04.c [2022-07-21 05:02:58,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ba0d029/674c39b2aa6d41c2bf7d13f9412fbcb6/FLAG9283d738d [2022-07-21 05:02:58,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ba0d029/674c39b2aa6d41c2bf7d13f9412fbcb6 [2022-07-21 05:02:58,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:02:58,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:02:58,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:02:58,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:02:58,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:02:58,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2cb582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58, skipping insertion in model container [2022-07-21 05:02:58,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:02:58,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:02:58,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann04.c[1166,1179] [2022-07-21 05:02:58,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:02:58,611 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:02:58,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann04.c[1166,1179] [2022-07-21 05:02:58,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:02:58,635 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:02:58,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58 WrapperNode [2022-07-21 05:02:58,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:02:58,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:02:58,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:02:58,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:02:58,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,656 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-07-21 05:02:58,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:02:58,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:02:58,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:02:58,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:02:58,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:02:58,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:02:58,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:02:58,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:02:58,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (1/1) ... [2022-07-21 05:02:58,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:02:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:02:58,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:02:58,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:02:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:02:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:02:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:02:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2022-07-21 05:02:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2022-07-21 05:02:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:02:58,779 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:02:58,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:02:58,885 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:02:58,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:02:58,889 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:02:58,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:02:58 BoogieIcfgContainer [2022-07-21 05:02:58,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:02:58,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:02:58,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:02:58,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:02:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:02:58" (1/3) ... [2022-07-21 05:02:58,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd99eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:02:58, skipping insertion in model container [2022-07-21 05:02:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:02:58" (2/3) ... [2022-07-21 05:02:58,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd99eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:02:58, skipping insertion in model container [2022-07-21 05:02:58,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:02:58" (3/3) ... [2022-07-21 05:02:58,895 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2022-07-21 05:02:58,904 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:02:58,904 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:02:58,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:02:58,935 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@152c6b52, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@448b338f [2022-07-21 05:02:58,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:02:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 05:02:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 05:02:58,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:02:58,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:02:58,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:02:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:02:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2022-07-21 05:02:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:02:58,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545623146] [2022-07-21 05:02:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:02:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:02:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:02:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:02:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:02:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:02:59,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:02:59,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545623146] [2022-07-21 05:02:59,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545623146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:02:59,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:02:59,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:02:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001058653] [2022-07-21 05:02:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:02:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:02:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:02:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:02:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:02:59,100 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:02:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:02:59,202 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-07-21 05:02:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:02:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-21 05:02:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:02:59,210 INFO L225 Difference]: With dead ends: 51 [2022-07-21 05:02:59,211 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 05:02:59,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:02:59,220 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:02:59,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:02:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 05:02:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-21 05:02:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 05:02:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-21 05:02:59,258 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 12 [2022-07-21 05:02:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:02:59,259 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-21 05:02:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:02:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-21 05:02:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 05:02:59,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:02:59,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:02:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:02:59,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:02:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:02:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2022-07-21 05:02:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:02:59,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869396493] [2022-07-21 05:02:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:02:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:02:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:02:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:02:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:02:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:02:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:02:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:02:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:02:59,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869396493] [2022-07-21 05:02:59,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869396493] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:02:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381847083] [2022-07-21 05:02:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:02:59,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:02:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:02:59,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:02:59,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:02:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:02:59,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 05:02:59,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:02:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:02:59,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:02:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:02:59,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381847083] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:02:59,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:02:59,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-21 05:02:59,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873098644] [2022-07-21 05:02:59,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:02:59,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:02:59,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:02:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:02:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:02:59,633 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 05:02:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:02:59,754 INFO L93 Difference]: Finished difference Result 74 states and 126 transitions. [2022-07-21 05:02:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:02:59,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 19 [2022-07-21 05:02:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:02:59,757 INFO L225 Difference]: With dead ends: 74 [2022-07-21 05:02:59,757 INFO L226 Difference]: Without dead ends: 50 [2022-07-21 05:02:59,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:02:59,758 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:02:59,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 91 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:02:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-21 05:02:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-07-21 05:02:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 10 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-21 05:02:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2022-07-21 05:02:59,768 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 19 [2022-07-21 05:02:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:02:59,768 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2022-07-21 05:02:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 05:02:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2022-07-21 05:02:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 05:02:59,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:02:59,771 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:02:59,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:02:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:02:59,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:02:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:02:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -574784801, now seen corresponding path program 1 times [2022-07-21 05:02:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:02:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260118832] [2022-07-21 05:02:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:02:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 05:03:00,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:00,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260118832] [2022-07-21 05:03:00,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260118832] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:00,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269042249] [2022-07-21 05:03:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:00,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:00,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:03:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:03:00,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 05:03:00,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 05:03:00,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269042249] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:00,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:00,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2022-07-21 05:03:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115673971] [2022-07-21 05:03:00,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:00,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 05:03:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 05:03:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:03:00,600 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 6 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-21 05:03:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:00,681 INFO L93 Difference]: Finished difference Result 120 states and 227 transitions. [2022-07-21 05:03:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 05:03:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 6 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9) Word has length 45 [2022-07-21 05:03:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:00,683 INFO L225 Difference]: With dead ends: 120 [2022-07-21 05:03:00,683 INFO L226 Difference]: Without dead ends: 53 [2022-07-21 05:03:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:03:00,686 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:00,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 82 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:03:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-21 05:03:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-07-21 05:03:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (28), 11 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-21 05:03:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2022-07-21 05:03:00,693 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 45 [2022-07-21 05:03:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:00,694 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2022-07-21 05:03:00,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 6 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-21 05:03:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2022-07-21 05:03:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 05:03:00,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:00,696 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:00,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:00,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 05:03:00,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -749766204, now seen corresponding path program 2 times [2022-07-21 05:03:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:00,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765524703] [2022-07-21 05:03:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:00,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:00,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 05:03:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-21 05:03:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:01,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765524703] [2022-07-21 05:03:01,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765524703] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:01,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978454251] [2022-07-21 05:03:01,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:03:01,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:01,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:01,356 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) [2022-07-21 05:03:01,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:03:01,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:03:01,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:01,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 05:03:01,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-21 05:03:01,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 05:03:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978454251] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:02,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:02,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2022-07-21 05:03:02,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233794821] [2022-07-21 05:03:02,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:02,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 05:03:02,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 05:03:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-07-21 05:03:02,719 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) [2022-07-21 05:03:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:02,978 INFO L93 Difference]: Finished difference Result 106 states and 183 transitions. [2022-07-21 05:03:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:03:02,978 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) Word has length 79 [2022-07-21 05:03:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:02,984 INFO L225 Difference]: With dead ends: 106 [2022-07-21 05:03:02,984 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 05:03:02,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-07-21 05:03:02,988 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:02,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 183 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 05:03:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2022-07-21 05:03:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (24), 11 states have call predecessors, (24), 8 states have call successors, (24) [2022-07-21 05:03:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2022-07-21 05:03:03,007 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 79 [2022-07-21 05:03:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:03,010 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2022-07-21 05:03:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) [2022-07-21 05:03:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2022-07-21 05:03:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:03:03,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:03,013 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:03,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 05:03:03,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:03,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2109661843, now seen corresponding path program 3 times [2022-07-21 05:03:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:03,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640056590] [2022-07-21 05:03:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:03:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 391 proven. 197 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-07-21 05:03:03,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:03,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640056590] [2022-07-21 05:03:03,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640056590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:03,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654452995] [2022-07-21 05:03:03,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 05:03:03,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:03,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:03,586 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) [2022-07-21 05:03:03,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:03:03,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-07-21 05:03:03,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:03,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 05:03:03,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 367 proven. 209 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-07-21 05:03:03,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 410 proven. 201 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2022-07-21 05:03:07,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654452995] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:07,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:07,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 26] total 39 [2022-07-21 05:03:07,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960085527] [2022-07-21 05:03:07,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-21 05:03:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-21 05:03:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2022-07-21 05:03:07,135 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 32 states have internal predecessors, (80), 15 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (33), 19 states have call predecessors, (33), 15 states have call successors, (33) [2022-07-21 05:03:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:07,811 INFO L93 Difference]: Finished difference Result 128 states and 237 transitions. [2022-07-21 05:03:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 05:03:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 32 states have internal predecessors, (80), 15 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (33), 19 states have call predecessors, (33), 15 states have call successors, (33) Word has length 144 [2022-07-21 05:03:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:07,817 INFO L225 Difference]: With dead ends: 128 [2022-07-21 05:03:07,817 INFO L226 Difference]: Without dead ends: 80 [2022-07-21 05:03:07,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 311 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=799, Invalid=3623, Unknown=0, NotChecked=0, Total=4422 [2022-07-21 05:03:07,819 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:07,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 273 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:03:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-21 05:03:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2022-07-21 05:03:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 11 states have call successors, (11), 5 states have call predecessors, (11), 10 states have return successors, (35), 15 states have call predecessors, (35), 11 states have call successors, (35) [2022-07-21 05:03:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 97 transitions. [2022-07-21 05:03:07,839 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 97 transitions. Word has length 144 [2022-07-21 05:03:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:07,841 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 97 transitions. [2022-07-21 05:03:07,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 32 states have internal predecessors, (80), 15 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (33), 19 states have call predecessors, (33), 15 states have call successors, (33) [2022-07-21 05:03:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 97 transitions. [2022-07-21 05:03:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-21 05:03:07,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:07,849 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:07,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:08,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1942933932, now seen corresponding path program 4 times [2022-07-21 05:03:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:08,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538998286] [2022-07-21 05:03:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 05:03:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 05:03:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 05:03:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 258 proven. 609 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-07-21 05:03:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:08,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538998286] [2022-07-21 05:03:08,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538998286] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:08,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885038453] [2022-07-21 05:03:08,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 05:03:08,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:08,445 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) [2022-07-21 05:03:08,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:03:08,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 05:03:08,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:08,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 05:03:08,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 1016 proven. 196 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2022-07-21 05:03:08,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 264 proven. 632 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-21 05:03:10,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885038453] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:10,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:10,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 21] total 27 [2022-07-21 05:03:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180991807] [2022-07-21 05:03:10,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:10,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 05:03:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 05:03:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:03:10,344 INFO L87 Difference]: Start difference. First operand 67 states and 97 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 24 states have internal predecessors, (81), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-21 05:03:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:10,690 INFO L93 Difference]: Finished difference Result 152 states and 268 transitions. [2022-07-21 05:03:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 05:03:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 24 states have internal predecessors, (81), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 183 [2022-07-21 05:03:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:10,691 INFO L225 Difference]: With dead ends: 152 [2022-07-21 05:03:10,692 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 05:03:10,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 408 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=401, Invalid=1491, Unknown=0, NotChecked=0, Total=1892 [2022-07-21 05:03:10,693 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:10,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 257 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:03:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 05:03:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2022-07-21 05:03:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 57 states have internal predecessors, (61), 14 states have call successors, (14), 5 states have call predecessors, (14), 14 states have return successors, (62), 22 states have call predecessors, (62), 14 states have call successors, (62) [2022-07-21 05:03:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 137 transitions. [2022-07-21 05:03:10,703 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 137 transitions. Word has length 183 [2022-07-21 05:03:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:10,703 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 137 transitions. [2022-07-21 05:03:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 24 states have internal predecessors, (81), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-21 05:03:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 137 transitions. [2022-07-21 05:03:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 05:03:10,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:10,705 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 16, 12, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:10,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:10,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:10,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:10,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash 66624188, now seen corresponding path program 5 times [2022-07-21 05:03:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:10,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816067162] [2022-07-21 05:03:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 05:03:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:03:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:03:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 05:03:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 327 proven. 605 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2022-07-21 05:03:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816067162] [2022-07-21 05:03:11,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816067162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139449829] [2022-07-21 05:03:11,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 05:03:11,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:11,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:11,263 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) [2022-07-21 05:03:11,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:03:11,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-07-21 05:03:11,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:11,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:03:11,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 1065 proven. 18 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-07-21 05:03:11,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 324 proven. 328 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2022-07-21 05:03:12,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139449829] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:12,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:12,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 19 [2022-07-21 05:03:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570395277] [2022-07-21 05:03:12,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:12,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 05:03:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 05:03:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-07-21 05:03:12,440 INFO L87 Difference]: Start difference. First operand 85 states and 137 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 9 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-21 05:03:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:12,657 INFO L93 Difference]: Finished difference Result 203 states and 456 transitions. [2022-07-21 05:03:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 05:03:12,663 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 9 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) Word has length 190 [2022-07-21 05:03:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:12,665 INFO L225 Difference]: With dead ends: 203 [2022-07-21 05:03:12,665 INFO L226 Difference]: Without dead ends: 123 [2022-07-21 05:03:12,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 435 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2022-07-21 05:03:12,666 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 118 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:12,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 136 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:03:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-21 05:03:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2022-07-21 05:03:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.1) internal successors, (77), 71 states have internal predecessors, (77), 19 states have call successors, (19), 9 states have call predecessors, (19), 15 states have return successors, (77), 24 states have call predecessors, (77), 19 states have call successors, (77) [2022-07-21 05:03:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 173 transitions. [2022-07-21 05:03:12,701 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 173 transitions. Word has length 190 [2022-07-21 05:03:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:12,702 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 173 transitions. [2022-07-21 05:03:12,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 9 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-21 05:03:12,702 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 173 transitions. [2022-07-21 05:03:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:03:12,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:12,704 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:12,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:12,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1294012555, now seen corresponding path program 6 times [2022-07-21 05:03:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:12,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995199885] [2022-07-21 05:03:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 05:03:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 158 proven. 354 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2022-07-21 05:03:13,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:13,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995199885] [2022-07-21 05:03:13,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995199885] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:13,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197574918] [2022-07-21 05:03:13,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 05:03:13,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:13,192 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) [2022-07-21 05:03:13,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:03:13,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-21 05:03:13,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:13,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 05:03:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 595 proven. 114 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 05:03:13,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 160 proven. 360 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-07-21 05:03:14,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197574918] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:14,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:14,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 17] total 23 [2022-07-21 05:03:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602972393] [2022-07-21 05:03:14,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:14,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 05:03:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 05:03:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-07-21 05:03:14,562 INFO L87 Difference]: Start difference. First operand 105 states and 173 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 20 states have internal predecessors, (69), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2022-07-21 05:03:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:14,886 INFO L93 Difference]: Finished difference Result 201 states and 358 transitions. [2022-07-21 05:03:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 05:03:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 20 states have internal predecessors, (69), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) Word has length 144 [2022-07-21 05:03:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:14,888 INFO L225 Difference]: With dead ends: 201 [2022-07-21 05:03:14,888 INFO L226 Difference]: Without dead ends: 105 [2022-07-21 05:03:14,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 320 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-07-21 05:03:14,890 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:14,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 174 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-21 05:03:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-07-21 05:03:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.1) internal successors, (77), 71 states have internal predecessors, (77), 19 states have call successors, (19), 9 states have call predecessors, (19), 15 states have return successors, (69), 24 states have call predecessors, (69), 19 states have call successors, (69) [2022-07-21 05:03:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 165 transitions. [2022-07-21 05:03:14,899 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 165 transitions. Word has length 144 [2022-07-21 05:03:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:14,899 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 165 transitions. [2022-07-21 05:03:14,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 20 states have internal predecessors, (69), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2022-07-21 05:03:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 165 transitions. [2022-07-21 05:03:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-21 05:03:14,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:14,901 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:14,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:15,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:15,118 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash 332854534, now seen corresponding path program 7 times [2022-07-21 05:03:15,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:15,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25849638] [2022-07-21 05:03:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:15,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:03:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 05:03:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:03:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2022-07-21 05:03:15,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25849638] [2022-07-21 05:03:15,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25849638] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006370108] [2022-07-21 05:03:15,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 05:03:15,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:15,482 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) [2022-07-21 05:03:15,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:03:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-21 05:03:15,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2022-07-21 05:03:15,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 711 proven. 75 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-21 05:03:19,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006370108] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:19,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:19,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 38 [2022-07-21 05:03:19,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761531780] [2022-07-21 05:03:19,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-21 05:03:19,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:19,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-21 05:03:19,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 05:03:19,632 INFO L87 Difference]: Start difference. First operand 105 states and 165 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-21 05:03:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:20,386 INFO L93 Difference]: Finished difference Result 170 states and 306 transitions. [2022-07-21 05:03:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 05:03:20,386 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 183 [2022-07-21 05:03:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:20,388 INFO L225 Difference]: With dead ends: 170 [2022-07-21 05:03:20,388 INFO L226 Difference]: Without dead ends: 166 [2022-07-21 05:03:20,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=771, Invalid=3651, Unknown=0, NotChecked=0, Total=4422 [2022-07-21 05:03:20,389 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:20,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 309 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:03:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-21 05:03:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 122. [2022-07-21 05:03:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 82 states have internal predecessors, (88), 20 states have call successors, (20), 9 states have call predecessors, (20), 20 states have return successors, (97), 30 states have call predecessors, (97), 20 states have call successors, (97) [2022-07-21 05:03:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 205 transitions. [2022-07-21 05:03:20,399 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 205 transitions. Word has length 183 [2022-07-21 05:03:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:20,399 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 205 transitions. [2022-07-21 05:03:20,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-21 05:03:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 205 transitions. [2022-07-21 05:03:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-21 05:03:20,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:20,401 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:20,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:20,619 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,SelfDestructingSolverStorable8 [2022-07-21 05:03:20,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:20,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:20,619 INFO L85 PathProgramCache]: Analyzing trace with hash -860565711, now seen corresponding path program 8 times [2022-07-21 05:03:20,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:20,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505056384] [2022-07-21 05:03:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:20,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:03:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:03:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 05:03:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 05:03:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 05:03:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-07-21 05:03:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:20,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505056384] [2022-07-21 05:03:20,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505056384] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:20,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336944730] [2022-07-21 05:03:20,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:03:20,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:20,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:20,945 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) [2022-07-21 05:03:20,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:03:21,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:03:21,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-21 05:03:21,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2022-07-21 05:03:21,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-07-21 05:03:24,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336944730] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:24,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:24,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 28] total 34 [2022-07-21 05:03:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787521531] [2022-07-21 05:03:24,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-21 05:03:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-21 05:03:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 05:03:24,036 INFO L87 Difference]: Start difference. First operand 122 states and 205 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 30 states have internal predecessors, (83), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-07-21 05:03:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:24,557 INFO L93 Difference]: Finished difference Result 239 states and 471 transitions. [2022-07-21 05:03:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 05:03:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 30 states have internal predecessors, (83), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 170 [2022-07-21 05:03:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:24,558 INFO L225 Difference]: With dead ends: 239 [2022-07-21 05:03:24,558 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 05:03:24,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 376 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=826, Invalid=3206, Unknown=0, NotChecked=0, Total=4032 [2022-07-21 05:03:24,561 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:24,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 184 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:03:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 05:03:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 05:03:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:03:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 05:03:24,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2022-07-21 05:03:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:24,562 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 05:03:24,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 30 states have internal predecessors, (83), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-07-21 05:03:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 05:03:24,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 05:03:24,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 05:03:24,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:24,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 05:03:24,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 05:03:26,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 05:03:26,443 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 05:03:26,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 05:03:26,443 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2022-07-21 05:03:26,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 05:03:26,443 INFO L902 garLoopResultBuilder]: At program point L27(lines 27 47) the Hoare annotation is: true [2022-07-21 05:03:26,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L902 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: true [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point ackermannEXIT(lines 16 24) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (or (not (<= 1 |ackermann_#in~n|)) (not (= |ackermann_#in~m| 0)) (not (< |ackermann_#in~n| 2))) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L902 garLoopResultBuilder]: At program point ackermannENTRY(lines 16 24) the Hoare annotation is: true [2022-07-21 05:03:26,444 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2022-07-21 05:03:26,444 INFO L895 garLoopResultBuilder]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse4 (= ackermann_~n |ackermann_#in~n|)) (.cse5 (= ackermann_~m |ackermann_#in~m|))) (let ((.cse0 (and (= |ackermann_#in~m| 0) .cse4 .cse5)) (.cse1 (<= 2 ackermann_~m))) (and (or (not (<= |ackermann_#in~m| 0)) .cse0) (let ((.cse2 (<= 1 |ackermann_#in~n|))) (or (and .cse1 .cse2) (and (<= |ackermann_#t~ret5| 2) .cse2) .cse0 (<= 2 |ackermann_#in~n|))) (let ((.cse3 (<= 5 |ackermann_#t~ret5|)) (.cse7 (<= ackermann_~m 1)) (.cse6 (<= 3 |ackermann_#t~ret5|)) (.cse8 (<= |ackermann_#in~n| 1))) (or (and .cse3 .cse1 .cse4 .cse5) (and (<= |ackermann_#in~n| 2) .cse6 .cse4 .cse5 .cse7) (and .cse3 .cse4 .cse5 (<= |ackermann_#in~n| 4)) (and (<= |ackermann_#in~n| 3) .cse4 .cse5 (<= |ackermann_#in~m| 1) (<= 4 |ackermann_#t~ret5|)) (not (<= 1 |ackermann_#in~m|)) (and .cse4 (<= 2 |ackermann_#t~ret5|) .cse5 .cse7 .cse8) (and .cse6 .cse4 .cse5 .cse8) (and (<= 6 |ackermann_#t~ret5|) .cse4 .cse5)))))) [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2022-07-21 05:03:26,444 INFO L899 garLoopResultBuilder]: For program point ackermannFINAL(lines 16 24) no Hoare annotation was computed. [2022-07-21 05:03:26,446 INFO L356 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2022-07-21 05:03:26,447 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 05:03:26,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:03:26 BoogieIcfgContainer [2022-07-21 05:03:26,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 05:03:26,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 05:03:26,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 05:03:26,470 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 05:03:26,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:02:58" (3/4) ... [2022-07-21 05:03:26,472 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 05:03:26,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2022-07-21 05:03:26,478 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-21 05:03:26,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-21 05:03:26,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 05:03:26,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 05:03:26,523 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 05:03:26,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 05:03:26,524 INFO L158 Benchmark]: Toolchain (without parser) took 28059.59ms. Allocated memory was 69.2MB in the beginning and 308.3MB in the end (delta: 239.1MB). Free memory was 51.2MB in the beginning and 185.4MB in the end (delta: -134.2MB). Peak memory consumption was 106.5MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,524 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory was 50.5MB in the beginning and 50.4MB in the end (delta: 54.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:03:26,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.57ms. Allocated memory is still 69.2MB. Free memory was 51.0MB in the beginning and 41.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.31ms. Allocated memory is still 69.2MB. Free memory was 41.3MB in the beginning and 39.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,527 INFO L158 Benchmark]: Boogie Preprocessor took 24.78ms. Allocated memory is still 69.2MB. Free memory was 39.9MB in the beginning and 38.9MB in the end (delta: 954.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,527 INFO L158 Benchmark]: RCFGBuilder took 208.27ms. Allocated memory is still 69.2MB. Free memory was 38.9MB in the beginning and 50.4MB in the end (delta: -11.5MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,527 INFO L158 Benchmark]: TraceAbstraction took 27578.13ms. Allocated memory was 69.2MB in the beginning and 308.3MB in the end (delta: 239.1MB). Free memory was 49.9MB in the beginning and 188.5MB in the end (delta: -138.6MB). Peak memory consumption was 189.1MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,527 INFO L158 Benchmark]: Witness Printer took 53.70ms. Allocated memory is still 308.3MB. Free memory was 188.5MB in the beginning and 185.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 05:03:26,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory was 50.5MB in the beginning and 50.4MB in the end (delta: 54.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.57ms. Allocated memory is still 69.2MB. Free memory was 51.0MB in the beginning and 41.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.31ms. Allocated memory is still 69.2MB. Free memory was 41.3MB in the beginning and 39.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.78ms. Allocated memory is still 69.2MB. Free memory was 39.9MB in the beginning and 38.9MB in the end (delta: 954.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 208.27ms. Allocated memory is still 69.2MB. Free memory was 38.9MB in the beginning and 50.4MB in the end (delta: -11.5MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 27578.13ms. Allocated memory was 69.2MB in the beginning and 308.3MB in the end (delta: 239.1MB). Free memory was 49.9MB in the beginning and 188.5MB in the end (delta: -138.6MB). Peak memory consumption was 189.1MB. Max. memory is 16.1GB. * Witness Printer took 53.70ms. Allocated memory is still 308.3MB. Free memory was 188.5MB in the beginning and 185.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.5s, OverallIterations: 10, TraceHistogramMax: 28, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 470 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 427 mSDsluCounter, 1761 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1504 mSDsCounter, 891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3715 IncrementalHoareTripleChecker+Invalid, 4606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 891 mSolverCounterUnsat, 257 mSDtfsCounter, 3715 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2959 GetRequests, 2574 SyntacticMatches, 21 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=9, InterpolantAutomatonStates: 206, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 85 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 482 PreInvPairs, 1115 NumberOfFragments, 179 HoareAnnotationTreeSize, 482 FomulaSimplifications, 4332 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 6 FomulaSimplificationsInter, 8703 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 2326 NumberOfCodeBlocks, 2225 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 3455 ConstructedInterpolants, 0 QuantifiedInterpolants, 6534 SizeOfPredicates, 60 NumberOfNonLiveVariables, 3278 ConjunctsInSsa, 197 ConjunctsInUnsatCore, 28 InterpolantComputations, 1 PerfectInterpolantSequences, 22292/27699 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 05:03:26,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE