./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/eca-rers2012/Problem14_label48.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 8261a53c19f43c038d6c9bf7efdae8a565c27af3d0b11334f16494326c28bf76 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 09:26:21,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 09:26:21,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 09:26:21,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 09:26:21,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 09:26:21,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 09:26:21,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 09:26:21,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 09:26:21,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 09:26:21,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 09:26:21,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 09:26:21,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 09:26:21,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 09:26:21,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 09:26:21,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 09:26:21,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 09:26:21,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 09:26:21,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 09:26:21,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 09:26:21,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 09:26:21,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 09:26:21,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 09:26:21,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 09:26:21,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 09:26:21,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 09:26:21,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 09:26:21,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 09:26:21,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 09:26:21,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 09:26:21,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 09:26:21,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 09:26:21,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 09:26:21,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 09:26:21,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 09:26:21,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 09:26:21,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 09:26:21,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 09:26:21,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 09:26:21,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 09:26:21,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 09:26:21,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 09:26:21,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 09:26:21,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 09:26:21,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 09:26:21,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 09:26:21,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 09:26:21,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 09:26:21,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 09:26:21,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 09:26:21,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 09:26:21,447 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 09:26:21,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 09:26:21,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 09:26:21,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 09:26:21,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 09:26:21,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 09:26:21,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 09:26:21,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 09:26:21,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 09:26:21,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 09:26:21,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 09:26:21,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 09:26:21,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 09:26:21,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 09:26:21,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 09:26:21,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 09:26:21,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 09:26:21,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 09:26:21,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 09:26:21,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 09:26:21,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 09:26:21,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 09:26:21,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 09:26:21,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 09:26:21,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 09:26:21,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 09:26:21,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8261a53c19f43c038d6c9bf7efdae8a565c27af3d0b11334f16494326c28bf76 [2021-12-22 09:26:21,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 09:26:21,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 09:26:21,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 09:26:21,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 09:26:21,657 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 09:26:21,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label48.c [2021-12-22 09:26:21,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42058c36d/7a9d57a8f0e647bbbe096e1ff705b189/FLAG95341439d [2021-12-22 09:26:22,090 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 09:26:22,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label48.c [2021-12-22 09:26:22,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42058c36d/7a9d57a8f0e647bbbe096e1ff705b189/FLAG95341439d [2021-12-22 09:26:22,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42058c36d/7a9d57a8f0e647bbbe096e1ff705b189 [2021-12-22 09:26:22,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 09:26:22,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 09:26:22,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 09:26:22,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 09:26:22,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 09:26:22,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af36a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22, skipping insertion in model container [2021-12-22 09:26:22,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 09:26:22,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 09:26:22,353 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/eca-rers2012/Problem14_label48.c[4040,4053] [2021-12-22 09:26:22,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 09:26:22,516 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 09:26:22,539 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/eca-rers2012/Problem14_label48.c[4040,4053] [2021-12-22 09:26:22,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 09:26:22,617 INFO L208 MainTranslator]: Completed translation [2021-12-22 09:26:22,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22 WrapperNode [2021-12-22 09:26:22,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 09:26:22,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 09:26:22,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 09:26:22,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 09:26:22,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,687 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-12-22 09:26:22,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 09:26:22,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 09:26:22,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 09:26:22,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 09:26:22,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 09:26:22,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 09:26:22,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 09:26:22,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 09:26:22,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (1/1) ... [2021-12-22 09:26:22,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 09:26:22,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:22,823 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) [2021-12-22 09:26:22,850 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 [2021-12-22 09:26:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 09:26:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 09:26:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 09:26:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 09:26:22,901 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 09:26:22,903 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 09:26:23,702 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 09:26:23,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 09:26:23,713 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 09:26:23,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:26:23 BoogieIcfgContainer [2021-12-22 09:26:23,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 09:26:23,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 09:26:23,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 09:26:23,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 09:26:23,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:26:22" (1/3) ... [2021-12-22 09:26:23,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:26:23, skipping insertion in model container [2021-12-22 09:26:23,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:22" (2/3) ... [2021-12-22 09:26:23,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560856e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:26:23, skipping insertion in model container [2021-12-22 09:26:23,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:26:23" (3/3) ... [2021-12-22 09:26:23,723 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label48.c [2021-12-22 09:26:23,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 09:26:23,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 09:26:23,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 09:26:23,767 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 09:26:23,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 09:26:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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) [2021-12-22 09:26:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 09:26:23,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:23,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:23,785 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2021-12-22 09:26:23,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:23,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16136900] [2021-12-22 09:26:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:23,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:26:23,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:23,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16136900] [2021-12-22 09:26:23,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16136900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:23,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:23,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:23,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144839623] [2021-12-22 09:26:23,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:23,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:23,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:23,973 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-12-22 09:26:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:25,004 INFO L93 Difference]: Finished difference Result 852 states and 1560 transitions. [2021-12-22 09:26:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-22 09:26:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:25,028 INFO L225 Difference]: With dead ends: 852 [2021-12-22 09:26:25,029 INFO L226 Difference]: Without dead ends: 538 [2021-12-22 09:26:25,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:26:25,036 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 556 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:25,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 44 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 09:26:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-22 09:26:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-12-22 09:26:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4487895716945995) internal successors, (778), 537 states have internal predecessors, (778), 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) [2021-12-22 09:26:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 778 transitions. [2021-12-22 09:26:25,087 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 778 transitions. Word has length 38 [2021-12-22 09:26:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:25,088 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 778 transitions. [2021-12-22 09:26:25,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-12-22 09:26:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 778 transitions. [2021-12-22 09:26:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-22 09:26:25,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:25,094 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:25,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 09:26:25,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash -644661184, now seen corresponding path program 1 times [2021-12-22 09:26:25,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:25,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296270738] [2021-12-22 09:26:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:25,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 09:26:25,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:25,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296270738] [2021-12-22 09:26:25,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296270738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:25,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:25,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 09:26:25,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526438140] [2021-12-22 09:26:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:25,210 INFO L87 Difference]: Start difference. First operand 538 states and 778 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2021-12-22 09:26:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:25,703 INFO L93 Difference]: Finished difference Result 1074 states and 1656 transitions. [2021-12-22 09:26:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-12-22 09:26:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:25,707 INFO L225 Difference]: With dead ends: 1074 [2021-12-22 09:26:25,707 INFO L226 Difference]: Without dead ends: 716 [2021-12-22 09:26:25,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:25,709 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 125 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:25,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 57 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-12-22 09:26:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-12-22 09:26:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.353846153846154) internal successors, (968), 715 states have internal predecessors, (968), 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) [2021-12-22 09:26:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 968 transitions. [2021-12-22 09:26:25,727 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 968 transitions. Word has length 186 [2021-12-22 09:26:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:25,728 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 968 transitions. [2021-12-22 09:26:25,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2021-12-22 09:26:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 968 transitions. [2021-12-22 09:26:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-22 09:26:25,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:25,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:25,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 09:26:25,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1687240179, now seen corresponding path program 1 times [2021-12-22 09:26:25,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:25,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885112951] [2021-12-22 09:26:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:25,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 09:26:25,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:25,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885112951] [2021-12-22 09:26:25,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885112951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:25,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:25,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:25,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570936680] [2021-12-22 09:26:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:25,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:25,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:25,843 INFO L87 Difference]: Start difference. First operand 716 states and 968 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-12-22 09:26:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:26,467 INFO L93 Difference]: Finished difference Result 1637 states and 2268 transitions. [2021-12-22 09:26:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:26,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-12-22 09:26:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:26,473 INFO L225 Difference]: With dead ends: 1637 [2021-12-22 09:26:26,473 INFO L226 Difference]: Without dead ends: 1072 [2021-12-22 09:26:26,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:26,480 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:26,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 09:26:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-12-22 09:26:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 894. [2021-12-22 09:26:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1724524076147815) internal successors, (1047), 893 states have internal predecessors, (1047), 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) [2021-12-22 09:26:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1047 transitions. [2021-12-22 09:26:26,504 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1047 transitions. Word has length 209 [2021-12-22 09:26:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:26,504 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1047 transitions. [2021-12-22 09:26:26,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-12-22 09:26:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1047 transitions. [2021-12-22 09:26:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-22 09:26:26,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:26,527 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:26,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 09:26:26,527 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -525447176, now seen corresponding path program 1 times [2021-12-22 09:26:26,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416118539] [2021-12-22 09:26:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:26,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 171 proven. 130 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 09:26:26,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416118539] [2021-12-22 09:26:26,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416118539] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:26,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913438726] [2021-12-22 09:26:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:26,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:26,868 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) [2021-12-22 09:26:26,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 09:26:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:26,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:26:27,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-22 09:26:27,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:27,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913438726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:27,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:27,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-22 09:26:27,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981037545] [2021-12-22 09:26:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:27,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:27,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:27,480 INFO L87 Difference]: Start difference. First operand 894 states and 1047 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2021-12-22 09:26:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:28,001 INFO L93 Difference]: Finished difference Result 2320 states and 2778 transitions. [2021-12-22 09:26:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:28,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2021-12-22 09:26:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:28,007 INFO L225 Difference]: With dead ends: 2320 [2021-12-22 09:26:28,007 INFO L226 Difference]: Without dead ends: 1606 [2021-12-22 09:26:28,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:28,014 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 143 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:28,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 265 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-12-22 09:26:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2021-12-22 09:26:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.1401541695865451) internal successors, (1627), 1427 states have internal predecessors, (1627), 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) [2021-12-22 09:26:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1627 transitions. [2021-12-22 09:26:28,033 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1627 transitions. Word has length 340 [2021-12-22 09:26:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:28,043 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1627 transitions. [2021-12-22 09:26:28,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2021-12-22 09:26:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1627 transitions. [2021-12-22 09:26:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-12-22 09:26:28,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:28,050 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:28,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:28,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:28,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1515675842, now seen corresponding path program 1 times [2021-12-22 09:26:28,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:28,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90256305] [2021-12-22 09:26:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:28,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-22 09:26:28,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:28,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90256305] [2021-12-22 09:26:28,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90256305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:28,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:28,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:28,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234040042] [2021-12-22 09:26:28,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:28,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:28,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:28,395 INFO L87 Difference]: Start difference. First operand 1428 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2021-12-22 09:26:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:28,806 INFO L93 Difference]: Finished difference Result 3210 states and 3757 transitions. [2021-12-22 09:26:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:28,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2021-12-22 09:26:28,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:28,812 INFO L225 Difference]: With dead ends: 3210 [2021-12-22 09:26:28,812 INFO L226 Difference]: Without dead ends: 1962 [2021-12-22 09:26:28,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:28,813 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:28,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 77 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-12-22 09:26:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2021-12-22 09:26:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.134043746494672) internal successors, (2022), 1783 states have internal predecessors, (2022), 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) [2021-12-22 09:26:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2022 transitions. [2021-12-22 09:26:28,837 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2022 transitions. Word has length 439 [2021-12-22 09:26:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:28,838 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 2022 transitions. [2021-12-22 09:26:28,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2021-12-22 09:26:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2022 transitions. [2021-12-22 09:26:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-12-22 09:26:28,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:28,844 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:28,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 09:26:28,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:28,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1446360066, now seen corresponding path program 1 times [2021-12-22 09:26:28,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:28,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180346601] [2021-12-22 09:26:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:28,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-22 09:26:28,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180346601] [2021-12-22 09:26:28,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180346601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:28,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:28,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:28,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798084321] [2021-12-22 09:26:28,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:28,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:28,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:28,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:28,974 INFO L87 Difference]: Start difference. First operand 1784 states and 2022 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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) [2021-12-22 09:26:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:29,537 INFO L93 Difference]: Finished difference Result 3744 states and 4238 transitions. [2021-12-22 09:26:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:29,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 463 [2021-12-22 09:26:29,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:29,543 INFO L225 Difference]: With dead ends: 3744 [2021-12-22 09:26:29,543 INFO L226 Difference]: Without dead ends: 2140 [2021-12-22 09:26:29,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:29,545 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 126 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:29,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 90 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-22 09:26:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2021-12-22 09:26:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.11781206171108) internal successors, (2391), 2139 states have internal predecessors, (2391), 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) [2021-12-22 09:26:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2391 transitions. [2021-12-22 09:26:29,569 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2391 transitions. Word has length 463 [2021-12-22 09:26:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:29,569 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2391 transitions. [2021-12-22 09:26:29,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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) [2021-12-22 09:26:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2391 transitions. [2021-12-22 09:26:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-12-22 09:26:29,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:29,576 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:29,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 09:26:29,576 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1587713622, now seen corresponding path program 1 times [2021-12-22 09:26:29,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:29,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40556110] [2021-12-22 09:26:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:29,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-12-22 09:26:29,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:29,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40556110] [2021-12-22 09:26:29,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40556110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:29,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:29,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:29,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995355555] [2021-12-22 09:26:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:29,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:29,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:29,702 INFO L87 Difference]: Start difference. First operand 2140 states and 2391 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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) [2021-12-22 09:26:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:30,187 INFO L93 Difference]: Finished difference Result 4336 states and 4849 transitions. [2021-12-22 09:26:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:30,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 519 [2021-12-22 09:26:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:30,193 INFO L225 Difference]: With dead ends: 4336 [2021-12-22 09:26:30,193 INFO L226 Difference]: Without dead ends: 2318 [2021-12-22 09:26:30,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:30,195 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 125 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:30,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 17 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-22 09:26:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2140. [2021-12-22 09:26:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.0855539971949508) internal successors, (2322), 2139 states have internal predecessors, (2322), 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) [2021-12-22 09:26:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2322 transitions. [2021-12-22 09:26:30,219 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2322 transitions. Word has length 519 [2021-12-22 09:26:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:30,220 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2322 transitions. [2021-12-22 09:26:30,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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) [2021-12-22 09:26:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2322 transitions. [2021-12-22 09:26:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-12-22 09:26:30,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:30,223 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:30,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 09:26:30,223 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash -319638967, now seen corresponding path program 2 times [2021-12-22 09:26:30,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:30,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770795101] [2021-12-22 09:26:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:30,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 775 proven. 11 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:30,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:30,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770795101] [2021-12-22 09:26:30,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770795101] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:30,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117590844] [2021-12-22 09:26:30,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 09:26:30,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:30,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:30,396 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) [2021-12-22 09:26:30,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 09:26:30,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 09:26:30,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 09:26:30,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:30,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:31,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:31,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117590844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:31,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:31,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:31,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896093125] [2021-12-22 09:26:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:31,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:31,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:31,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:31,580 INFO L87 Difference]: Start difference. First operand 2140 states and 2322 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-12-22 09:26:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:32,129 INFO L93 Difference]: Finished difference Result 4990 states and 5475 transitions. [2021-12-22 09:26:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2021-12-22 09:26:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:32,136 INFO L225 Difference]: With dead ends: 4990 [2021-12-22 09:26:32,137 INFO L226 Difference]: Without dead ends: 3030 [2021-12-22 09:26:32,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:32,139 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 164 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:32,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 15 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-12-22 09:26:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2496. [2021-12-22 09:26:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.0789579158316633) internal successors, (2692), 2495 states have internal predecessors, (2692), 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) [2021-12-22 09:26:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2692 transitions. [2021-12-22 09:26:32,169 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2692 transitions. Word has length 545 [2021-12-22 09:26:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:32,169 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2692 transitions. [2021-12-22 09:26:32,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-12-22 09:26:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2692 transitions. [2021-12-22 09:26:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-12-22 09:26:32,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:32,173 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:32,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:32,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-22 09:26:32,390 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash 245952814, now seen corresponding path program 1 times [2021-12-22 09:26:32,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:32,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220928612] [2021-12-22 09:26:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:32,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 788 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:32,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:32,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220928612] [2021-12-22 09:26:32,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220928612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:32,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:32,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:32,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188360853] [2021-12-22 09:26:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:32,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:32,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:32,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:32,510 INFO L87 Difference]: Start difference. First operand 2496 states and 2692 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2021-12-22 09:26:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:32,886 INFO L93 Difference]: Finished difference Result 5702 states and 6216 transitions. [2021-12-22 09:26:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 552 [2021-12-22 09:26:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:32,894 INFO L225 Difference]: With dead ends: 5702 [2021-12-22 09:26:32,894 INFO L226 Difference]: Without dead ends: 3386 [2021-12-22 09:26:32,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:32,898 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:32,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 203 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-12-22 09:26:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3208. [2021-12-22 09:26:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0770190208917991) internal successors, (3454), 3207 states have internal predecessors, (3454), 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) [2021-12-22 09:26:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3454 transitions. [2021-12-22 09:26:32,957 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3454 transitions. Word has length 552 [2021-12-22 09:26:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:32,957 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3454 transitions. [2021-12-22 09:26:32,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2021-12-22 09:26:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3454 transitions. [2021-12-22 09:26:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-12-22 09:26:32,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:32,962 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:32,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 09:26:32,962 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:32,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash -150190201, now seen corresponding path program 1 times [2021-12-22 09:26:32,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:32,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229882235] [2021-12-22 09:26:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:32,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 802 proven. 195 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-22 09:26:33,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:33,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229882235] [2021-12-22 09:26:33,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229882235] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:33,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378632805] [2021-12-22 09:26:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:33,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:33,140 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) [2021-12-22 09:26:33,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 09:26:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:33,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-12-22 09:26:34,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:34,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378632805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:34,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:34,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-22 09:26:34,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466111862] [2021-12-22 09:26:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:34,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:34,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:34,236 INFO L87 Difference]: Start difference. First operand 3208 states and 3454 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 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) [2021-12-22 09:26:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:34,670 INFO L93 Difference]: Finished difference Result 6948 states and 7481 transitions. [2021-12-22 09:26:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:34,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 597 [2021-12-22 09:26:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:34,680 INFO L225 Difference]: With dead ends: 6948 [2021-12-22 09:26:34,680 INFO L226 Difference]: Without dead ends: 3920 [2021-12-22 09:26:34,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:34,683 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:34,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 50 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-12-22 09:26:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3386. [2021-12-22 09:26:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.0782865583456425) internal successors, (3650), 3385 states have internal predecessors, (3650), 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) [2021-12-22 09:26:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3650 transitions. [2021-12-22 09:26:34,723 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3650 transitions. Word has length 597 [2021-12-22 09:26:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:34,723 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 3650 transitions. [2021-12-22 09:26:34,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 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) [2021-12-22 09:26:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3650 transitions. [2021-12-22 09:26:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2021-12-22 09:26:34,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:34,728 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:34,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:34,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:34,945 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -166196995, now seen corresponding path program 1 times [2021-12-22 09:26:34,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092259341] [2021-12-22 09:26:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:34,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:35,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:35,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092259341] [2021-12-22 09:26:35,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092259341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:35,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:35,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:35,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909260592] [2021-12-22 09:26:35,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:35,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:35,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:35,112 INFO L87 Difference]: Start difference. First operand 3386 states and 3650 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2021-12-22 09:26:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:35,510 INFO L93 Difference]: Finished difference Result 8016 states and 8717 transitions. [2021-12-22 09:26:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 619 [2021-12-22 09:26:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:35,520 INFO L225 Difference]: With dead ends: 8016 [2021-12-22 09:26:35,520 INFO L226 Difference]: Without dead ends: 4810 [2021-12-22 09:26:35,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:35,528 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:35,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-12-22 09:26:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2021-12-22 09:26:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0721563734664172) internal successors, (5156), 4809 states have internal predecessors, (5156), 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) [2021-12-22 09:26:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5156 transitions. [2021-12-22 09:26:35,634 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5156 transitions. Word has length 619 [2021-12-22 09:26:35,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:35,647 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 5156 transitions. [2021-12-22 09:26:35,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2021-12-22 09:26:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5156 transitions. [2021-12-22 09:26:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2021-12-22 09:26:35,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:35,654 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:35,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 09:26:35,654 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash 621359234, now seen corresponding path program 1 times [2021-12-22 09:26:35,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:35,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733283744] [2021-12-22 09:26:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:35,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 1470 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-12-22 09:26:35,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733283744] [2021-12-22 09:26:35,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733283744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:35,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:35,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:35,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752695563] [2021-12-22 09:26:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:35,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:35,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:35,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:35,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:35,792 INFO L87 Difference]: Start difference. First operand 4810 states and 5156 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-12-22 09:26:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:36,291 INFO L93 Difference]: Finished difference Result 9618 states and 10325 transitions. [2021-12-22 09:26:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:36,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 698 [2021-12-22 09:26:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:36,302 INFO L225 Difference]: With dead ends: 9618 [2021-12-22 09:26:36,303 INFO L226 Difference]: Without dead ends: 4988 [2021-12-22 09:26:36,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:36,307 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 103 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:36,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 242 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-12-22 09:26:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4454. [2021-12-22 09:26:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0700651246350774) internal successors, (4765), 4453 states have internal predecessors, (4765), 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) [2021-12-22 09:26:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4765 transitions. [2021-12-22 09:26:36,355 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4765 transitions. Word has length 698 [2021-12-22 09:26:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:36,356 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4765 transitions. [2021-12-22 09:26:36,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-12-22 09:26:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4765 transitions. [2021-12-22 09:26:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-12-22 09:26:36,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:36,362 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:36,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 09:26:36,363 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1384462902, now seen corresponding path program 1 times [2021-12-22 09:26:36,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:36,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775494772] [2021-12-22 09:26:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:36,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 1234 proven. 155 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:36,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:36,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775494772] [2021-12-22 09:26:36,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775494772] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:36,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143244423] [2021-12-22 09:26:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:36,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:36,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:36,537 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) [2021-12-22 09:26:36,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 09:26:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:36,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:36,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 1234 proven. 155 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:37,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 09:26:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 1234 proven. 155 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-22 09:26:38,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143244423] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 09:26:38,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 09:26:38,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-22 09:26:38,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074600708] [2021-12-22 09:26:38,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 09:26:38,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 09:26:38,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 09:26:38,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:38,643 INFO L87 Difference]: Start difference. First operand 4454 states and 4765 transitions. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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) [2021-12-22 09:26:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:39,394 INFO L93 Difference]: Finished difference Result 10152 states and 10909 transitions. [2021-12-22 09:26:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 09:26:39,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 774 [2021-12-22 09:26:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:39,404 INFO L225 Difference]: With dead ends: 10152 [2021-12-22 09:26:39,405 INFO L226 Difference]: Without dead ends: 5878 [2021-12-22 09:26:39,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1546 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:39,408 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 51 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:39,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 70 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 09:26:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2021-12-22 09:26:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5166. [2021-12-22 09:26:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.0710551790900291) internal successors, (5532), 5165 states have internal predecessors, (5532), 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) [2021-12-22 09:26:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5532 transitions. [2021-12-22 09:26:39,457 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5532 transitions. Word has length 774 [2021-12-22 09:26:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:39,457 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5532 transitions. [2021-12-22 09:26:39,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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) [2021-12-22 09:26:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5532 transitions. [2021-12-22 09:26:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2021-12-22 09:26:39,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:39,465 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:39,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:39,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:39,695 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1452861494, now seen corresponding path program 1 times [2021-12-22 09:26:39,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:39,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836956233] [2021-12-22 09:26:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:39,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 1415 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-12-22 09:26:39,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:39,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836956233] [2021-12-22 09:26:39,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836956233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:39,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:39,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:39,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251200186] [2021-12-22 09:26:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:39,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:39,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:39,880 INFO L87 Difference]: Start difference. First operand 5166 states and 5532 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2021-12-22 09:26:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:40,269 INFO L93 Difference]: Finished difference Result 11220 states and 12108 transitions. [2021-12-22 09:26:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 846 [2021-12-22 09:26:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:40,279 INFO L225 Difference]: With dead ends: 11220 [2021-12-22 09:26:40,280 INFO L226 Difference]: Without dead ends: 6234 [2021-12-22 09:26:40,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:40,284 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:40,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 33 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-12-22 09:26:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6234. [2021-12-22 09:26:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6233 states have (on average 1.074923792716188) internal successors, (6700), 6233 states have internal predecessors, (6700), 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) [2021-12-22 09:26:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6700 transitions. [2021-12-22 09:26:40,387 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6700 transitions. Word has length 846 [2021-12-22 09:26:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:40,388 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 6700 transitions. [2021-12-22 09:26:40,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2021-12-22 09:26:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6700 transitions. [2021-12-22 09:26:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2021-12-22 09:26:40,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:40,408 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:40,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 09:26:40,408 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1223574979, now seen corresponding path program 1 times [2021-12-22 09:26:40,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:40,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042524711] [2021-12-22 09:26:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:40,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2224 backedges. 1483 proven. 93 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-12-22 09:26:40,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042524711] [2021-12-22 09:26:40,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042524711] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285580071] [2021-12-22 09:26:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:40,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:40,804 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) [2021-12-22 09:26:40,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 09:26:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:41,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:41,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2224 backedges. 1576 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-12-22 09:26:42,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:42,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285580071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:42,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:42,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:42,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867247235] [2021-12-22 09:26:42,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:42,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:42,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:42,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:42,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:42,375 INFO L87 Difference]: Start difference. First operand 6234 states and 6700 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2021-12-22 09:26:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:42,740 INFO L93 Difference]: Finished difference Result 12644 states and 13591 transitions. [2021-12-22 09:26:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 864 [2021-12-22 09:26:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:42,756 INFO L225 Difference]: With dead ends: 12644 [2021-12-22 09:26:42,757 INFO L226 Difference]: Without dead ends: 6590 [2021-12-22 09:26:42,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:42,788 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:42,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-12-22 09:26:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6412. [2021-12-22 09:26:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0744033692091717) internal successors, (6888), 6411 states have internal predecessors, (6888), 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) [2021-12-22 09:26:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6888 transitions. [2021-12-22 09:26:42,885 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6888 transitions. Word has length 864 [2021-12-22 09:26:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:42,885 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6888 transitions. [2021-12-22 09:26:42,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2021-12-22 09:26:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6888 transitions. [2021-12-22 09:26:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2021-12-22 09:26:42,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:42,914 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:42,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:43,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-22 09:26:43,128 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -149204083, now seen corresponding path program 1 times [2021-12-22 09:26:43,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:43,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58605393] [2021-12-22 09:26:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:43,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2493 backedges. 1702 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-12-22 09:26:43,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58605393] [2021-12-22 09:26:43,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58605393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:43,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:43,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:43,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82445809] [2021-12-22 09:26:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:43,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:43,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:43,351 INFO L87 Difference]: Start difference. First operand 6412 states and 6888 transitions. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2021-12-22 09:26:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:43,722 INFO L93 Difference]: Finished difference Result 12466 states and 13415 transitions. [2021-12-22 09:26:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 932 [2021-12-22 09:26:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:43,731 INFO L225 Difference]: With dead ends: 12466 [2021-12-22 09:26:43,731 INFO L226 Difference]: Without dead ends: 6234 [2021-12-22 09:26:43,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:43,737 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:43,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 227 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-12-22 09:26:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6234. [2021-12-22 09:26:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6233 states have (on average 1.067222846141505) internal successors, (6652), 6233 states have internal predecessors, (6652), 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) [2021-12-22 09:26:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6652 transitions. [2021-12-22 09:26:43,798 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6652 transitions. Word has length 932 [2021-12-22 09:26:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:43,798 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 6652 transitions. [2021-12-22 09:26:43,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2021-12-22 09:26:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6652 transitions. [2021-12-22 09:26:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2021-12-22 09:26:43,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:43,806 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:43,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 09:26:43,807 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:43,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash 377118381, now seen corresponding path program 1 times [2021-12-22 09:26:43,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:43,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457868735] [2021-12-22 09:26:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:43,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 1777 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-12-22 09:26:44,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457868735] [2021-12-22 09:26:44,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457868735] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454364779] [2021-12-22 09:26:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:44,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:44,060 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) [2021-12-22 09:26:44,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 09:26:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:44,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 09:26:44,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 1490 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2021-12-22 09:26:45,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:45,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454364779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:45,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:45,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-22 09:26:45,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200973527] [2021-12-22 09:26:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:45,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:45,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:45,515 INFO L87 Difference]: Start difference. First operand 6234 states and 6652 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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) [2021-12-22 09:26:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:46,118 INFO L93 Difference]: Finished difference Result 13534 states and 14441 transitions. [2021-12-22 09:26:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:46,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 941 [2021-12-22 09:26:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:46,127 INFO L225 Difference]: With dead ends: 13534 [2021-12-22 09:26:46,128 INFO L226 Difference]: Without dead ends: 7480 [2021-12-22 09:26:46,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:46,132 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 109 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:46,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 54 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-12-22 09:26:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 6768. [2021-12-22 09:26:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6768 states, 6767 states have (on average 1.0647258755726319) internal successors, (7205), 6767 states have internal predecessors, (7205), 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) [2021-12-22 09:26:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 7205 transitions. [2021-12-22 09:26:46,196 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 7205 transitions. Word has length 941 [2021-12-22 09:26:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:46,197 INFO L470 AbstractCegarLoop]: Abstraction has 6768 states and 7205 transitions. [2021-12-22 09:26:46,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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) [2021-12-22 09:26:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 7205 transitions. [2021-12-22 09:26:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2021-12-22 09:26:46,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:46,207 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:46,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-22 09:26:46,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-22 09:26:46,427 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:46,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash 739916095, now seen corresponding path program 1 times [2021-12-22 09:26:46,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:46,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096368969] [2021-12-22 09:26:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:46,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1578 proven. 0 refuted. 0 times theorem prover too weak. 1950 trivial. 0 not checked. [2021-12-22 09:26:46,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:46,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096368969] [2021-12-22 09:26:46,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096368969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:46,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:46,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 09:26:46,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795443372] [2021-12-22 09:26:46,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:46,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 09:26:46,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:46,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 09:26:46,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:46,695 INFO L87 Difference]: Start difference. First operand 6768 states and 7205 transitions. Second operand has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 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) [2021-12-22 09:26:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:47,258 INFO L93 Difference]: Finished difference Result 12944 states and 13771 transitions. [2021-12-22 09:26:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 09:26:47,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 984 [2021-12-22 09:26:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:47,265 INFO L225 Difference]: With dead ends: 12944 [2021-12-22 09:26:47,265 INFO L226 Difference]: Without dead ends: 6056 [2021-12-22 09:26:47,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:47,270 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 86 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:47,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 25 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-12-22 09:26:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 6056. [2021-12-22 09:26:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6055 states have (on average 1.0525185796862098) internal successors, (6373), 6055 states have internal predecessors, (6373), 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) [2021-12-22 09:26:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 6373 transitions. [2021-12-22 09:26:47,315 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 6373 transitions. Word has length 984 [2021-12-22 09:26:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:47,316 INFO L470 AbstractCegarLoop]: Abstraction has 6056 states and 6373 transitions. [2021-12-22 09:26:47,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 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) [2021-12-22 09:26:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 6373 transitions. [2021-12-22 09:26:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2021-12-22 09:26:47,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:47,325 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:47,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 09:26:47,325 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:47,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:47,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1123634884, now seen corresponding path program 1 times [2021-12-22 09:26:47,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:47,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225388259] [2021-12-22 09:26:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:47,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 1990 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-12-22 09:26:47,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:47,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225388259] [2021-12-22 09:26:47,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225388259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:47,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:47,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:47,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450469875] [2021-12-22 09:26:47,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:47,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:47,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:47,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:47,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:47,542 INFO L87 Difference]: Start difference. First operand 6056 states and 6373 transitions. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2021-12-22 09:26:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:47,887 INFO L93 Difference]: Finished difference Result 11932 states and 12565 transitions. [2021-12-22 09:26:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1027 [2021-12-22 09:26:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:47,893 INFO L225 Difference]: With dead ends: 11932 [2021-12-22 09:26:47,893 INFO L226 Difference]: Without dead ends: 6056 [2021-12-22 09:26:47,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:47,900 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:47,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 219 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-12-22 09:26:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5878. [2021-12-22 09:26:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 1.0474732006125573) internal successors, (6156), 5877 states have internal predecessors, (6156), 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) [2021-12-22 09:26:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 6156 transitions. [2021-12-22 09:26:47,973 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 6156 transitions. Word has length 1027 [2021-12-22 09:26:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:47,974 INFO L470 AbstractCegarLoop]: Abstraction has 5878 states and 6156 transitions. [2021-12-22 09:26:47,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2021-12-22 09:26:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 6156 transitions. [2021-12-22 09:26:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2021-12-22 09:26:47,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:47,983 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:47,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 09:26:47,983 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:47,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1328529225, now seen corresponding path program 1 times [2021-12-22 09:26:47,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:47,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551821409] [2021-12-22 09:26:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:47,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 1534 proven. 95 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2021-12-22 09:26:48,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551821409] [2021-12-22 09:26:48,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551821409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106782388] [2021-12-22 09:26:48,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:48,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:48,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:48,281 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) [2021-12-22 09:26:48,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 09:26:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:48,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:26:48,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 1629 proven. 0 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2021-12-22 09:26:49,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:49,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106782388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:49,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:49,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:49,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23638004] [2021-12-22 09:26:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:49,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:49,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:49,435 INFO L87 Difference]: Start difference. First operand 5878 states and 6156 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2021-12-22 09:26:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:49,736 INFO L93 Difference]: Finished difference Result 11754 states and 12310 transitions. [2021-12-22 09:26:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1101 [2021-12-22 09:26:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:49,741 INFO L225 Difference]: With dead ends: 11754 [2021-12-22 09:26:49,741 INFO L226 Difference]: Without dead ends: 6056 [2021-12-22 09:26:49,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1104 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:49,745 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:49,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-12-22 09:26:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5700. [2021-12-22 09:26:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5699 states have (on average 1.0359712230215827) internal successors, (5904), 5699 states have internal predecessors, (5904), 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) [2021-12-22 09:26:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 5904 transitions. [2021-12-22 09:26:49,796 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 5904 transitions. Word has length 1101 [2021-12-22 09:26:49,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:49,797 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 5904 transitions. [2021-12-22 09:26:49,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2021-12-22 09:26:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 5904 transitions. [2021-12-22 09:26:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1652 [2021-12-22 09:26:49,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:49,814 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:49,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-22 09:26:50,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:50,031 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash 292188241, now seen corresponding path program 1 times [2021-12-22 09:26:50,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:50,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646793365] [2021-12-22 09:26:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:50,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 1706 proven. 1045 refuted. 0 times theorem prover too weak. 5613 trivial. 0 not checked. [2021-12-22 09:26:50,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646793365] [2021-12-22 09:26:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646793365] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563854262] [2021-12-22 09:26:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:50,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:50,565 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) [2021-12-22 09:26:50,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 09:26:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:50,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:26:50,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 2751 proven. 0 refuted. 0 times theorem prover too weak. 5613 trivial. 0 not checked. [2021-12-22 09:26:52,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:52,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563854262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:52,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:52,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:52,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908662962] [2021-12-22 09:26:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:52,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:52,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:52,976 INFO L87 Difference]: Start difference. First operand 5700 states and 5904 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2021-12-22 09:26:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:53,292 INFO L93 Difference]: Finished difference Result 12288 states and 12706 transitions. [2021-12-22 09:26:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1651 [2021-12-22 09:26:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:53,296 INFO L225 Difference]: With dead ends: 12288 [2021-12-22 09:26:53,296 INFO L226 Difference]: Without dead ends: 4276 [2021-12-22 09:26:53,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1654 GetRequests, 1650 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:53,300 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:53,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 231 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-12-22 09:26:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2021-12-22 09:26:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.025384427629973) internal successors, (4201), 4097 states have internal predecessors, (4201), 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) [2021-12-22 09:26:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4201 transitions. [2021-12-22 09:26:53,329 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4201 transitions. Word has length 1651 [2021-12-22 09:26:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:53,330 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4201 transitions. [2021-12-22 09:26:53,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2021-12-22 09:26:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4201 transitions. [2021-12-22 09:26:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2021-12-22 09:26:53,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:53,347 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:53,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:53,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-22 09:26:53,566 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:53,567 INFO L85 PathProgramCache]: Analyzing trace with hash 306460098, now seen corresponding path program 1 times [2021-12-22 09:26:53,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:53,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900018223] [2021-12-22 09:26:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:53,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9489 backedges. 2742 proven. 0 refuted. 0 times theorem prover too weak. 6747 trivial. 0 not checked. [2021-12-22 09:26:54,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:54,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900018223] [2021-12-22 09:26:54,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900018223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:54,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:54,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:54,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177740803] [2021-12-22 09:26:54,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:54,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:54,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:54,097 INFO L87 Difference]: Start difference. First operand 4098 states and 4201 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-12-22 09:26:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:54,468 INFO L93 Difference]: Finished difference Result 8038 states and 8245 transitions. [2021-12-22 09:26:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1704 [2021-12-22 09:26:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:54,471 INFO L225 Difference]: With dead ends: 8038 [2021-12-22 09:26:54,472 INFO L226 Difference]: Without dead ends: 4276 [2021-12-22 09:26:54,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:54,475 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:54,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 17 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-12-22 09:26:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2021-12-22 09:26:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0241640224554551) internal successors, (4196), 4097 states have internal predecessors, (4196), 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) [2021-12-22 09:26:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4196 transitions. [2021-12-22 09:26:54,504 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4196 transitions. Word has length 1704 [2021-12-22 09:26:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:54,505 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4196 transitions. [2021-12-22 09:26:54,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-12-22 09:26:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4196 transitions. [2021-12-22 09:26:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2021-12-22 09:26:54,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:54,523 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:54,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 09:26:54,523 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1151917844, now seen corresponding path program 1 times [2021-12-22 09:26:54,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:54,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390064200] [2021-12-22 09:26:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:54,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9629 backedges. 1553 proven. 0 refuted. 0 times theorem prover too weak. 8076 trivial. 0 not checked. [2021-12-22 09:26:55,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:55,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390064200] [2021-12-22 09:26:55,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390064200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:55,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:55,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 09:26:55,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146412965] [2021-12-22 09:26:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:55,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 09:26:55,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 09:26:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:26:55,065 INFO L87 Difference]: Start difference. First operand 4098 states and 4196 transitions. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 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) [2021-12-22 09:26:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:55,604 INFO L93 Difference]: Finished difference Result 9275 states and 9530 transitions. [2021-12-22 09:26:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 09:26:55,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1722 [2021-12-22 09:26:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:55,608 INFO L225 Difference]: With dead ends: 9275 [2021-12-22 09:26:55,609 INFO L226 Difference]: Without dead ends: 5522 [2021-12-22 09:26:55,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:26:55,611 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 135 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:55,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 20 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:26:55,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2021-12-22 09:26:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4810. [2021-12-22 09:26:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0280723643169059) internal successors, (4944), 4809 states have internal predecessors, (4944), 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) [2021-12-22 09:26:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4944 transitions. [2021-12-22 09:26:55,650 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4944 transitions. Word has length 1722 [2021-12-22 09:26:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:55,651 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4944 transitions. [2021-12-22 09:26:55,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 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) [2021-12-22 09:26:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4944 transitions. [2021-12-22 09:26:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2021-12-22 09:26:55,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:55,669 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:55,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 09:26:55,669 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:55,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1097919814, now seen corresponding path program 1 times [2021-12-22 09:26:55,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:55,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584973657] [2021-12-22 09:26:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:55,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9684 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 9181 trivial. 0 not checked. [2021-12-22 09:26:56,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584973657] [2021-12-22 09:26:56,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584973657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:56,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:56,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:56,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487240772] [2021-12-22 09:26:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:56,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:56,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:56,212 INFO L87 Difference]: Start difference. First operand 4810 states and 4944 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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) [2021-12-22 09:26:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:56,567 INFO L93 Difference]: Finished difference Result 9452 states and 9721 transitions. [2021-12-22 09:26:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1727 [2021-12-22 09:26:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:56,571 INFO L225 Difference]: With dead ends: 9452 [2021-12-22 09:26:56,571 INFO L226 Difference]: Without dead ends: 4988 [2021-12-22 09:26:56,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:56,575 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:56,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-12-22 09:26:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4810. [2021-12-22 09:26:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0268247036805989) internal successors, (4938), 4809 states have internal predecessors, (4938), 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) [2021-12-22 09:26:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4938 transitions. [2021-12-22 09:26:56,610 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4938 transitions. Word has length 1727 [2021-12-22 09:26:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:56,611 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4938 transitions. [2021-12-22 09:26:56,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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) [2021-12-22 09:26:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4938 transitions. [2021-12-22 09:26:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1893 [2021-12-22 09:26:56,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:56,631 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:56,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 09:26:56,632 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 773480895, now seen corresponding path program 1 times [2021-12-22 09:26:56,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:56,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105195967] [2021-12-22 09:26:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:56,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11344 backedges. 2271 proven. 812 refuted. 0 times theorem prover too weak. 8261 trivial. 0 not checked. [2021-12-22 09:26:57,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105195967] [2021-12-22 09:26:57,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105195967] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119083434] [2021-12-22 09:26:57,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:57,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:57,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:57,216 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) [2021-12-22 09:26:57,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 09:26:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:57,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 09:26:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:27:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11344 backedges. 3050 proven. 0 refuted. 0 times theorem prover too weak. 8294 trivial. 0 not checked. [2021-12-22 09:27:00,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:27:00,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119083434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:00,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:27:00,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2021-12-22 09:27:00,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990186544] [2021-12-22 09:27:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:00,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 09:27:00,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:00,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 09:27:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 09:27:00,416 INFO L87 Difference]: Start difference. First operand 4810 states and 4938 transitions. Second operand has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 6 states have internal predecessors, (370), 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) [2021-12-22 09:27:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:00,866 INFO L93 Difference]: Finished difference Result 9311 states and 9565 transitions. [2021-12-22 09:27:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 09:27:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1892 [2021-12-22 09:27:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:00,870 INFO L225 Difference]: With dead ends: 9311 [2021-12-22 09:27:00,870 INFO L226 Difference]: Without dead ends: 4810 [2021-12-22 09:27:00,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1896 GetRequests, 1888 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 09:27:00,873 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:00,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 25 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:27:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-12-22 09:27:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2021-12-22 09:27:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.025992929923061) internal successors, (4934), 4809 states have internal predecessors, (4934), 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) [2021-12-22 09:27:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4934 transitions. [2021-12-22 09:27:00,908 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4934 transitions. Word has length 1892 [2021-12-22 09:27:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:00,908 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4934 transitions. [2021-12-22 09:27:00,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 6 states have internal predecessors, (370), 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) [2021-12-22 09:27:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4934 transitions. [2021-12-22 09:27:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2025 [2021-12-22 09:27:00,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:00,933 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:00,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 09:27:01,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-22 09:27:01,136 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:01,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1727252823, now seen corresponding path program 1 times [2021-12-22 09:27:01,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:01,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452816161] [2021-12-22 09:27:01,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:01,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13033 backedges. 1789 proven. 0 refuted. 0 times theorem prover too weak. 11244 trivial. 0 not checked. [2021-12-22 09:27:01,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452816161] [2021-12-22 09:27:01,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452816161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:01,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:27:01,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 09:27:01,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186393727] [2021-12-22 09:27:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:01,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:27:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:27:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:01,811 INFO L87 Difference]: Start difference. First operand 4810 states and 4934 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2021-12-22 09:27:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:02,171 INFO L93 Difference]: Finished difference Result 9095 states and 9338 transitions. [2021-12-22 09:27:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:27:02,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2024 [2021-12-22 09:27:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:02,172 INFO L225 Difference]: With dead ends: 9095 [2021-12-22 09:27:02,173 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 09:27:02,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:02,176 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:02,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 15 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:27:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 09:27:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 09:27:02,178 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) [2021-12-22 09:27:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 09:27:02,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2024 [2021-12-22 09:27:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:02,179 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 09:27:02,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2021-12-22 09:27:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 09:27:02,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 09:27:02,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 09:27:02,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 09:27:02,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,191 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,192 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,193 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,194 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,195 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 128) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-12-22 09:27:04,196 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-12-22 09:27:04,197 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,197 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-12-22 09:27:04,198 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-12-22 09:27:04,199 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-12-22 09:27:04,200 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-12-22 09:27:04,201 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,202 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,203 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,204 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,205 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,206 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse15 (+ ~a12~0 43)) (.cse5 (= 7 ~a15~0))) (let ((.cse3 (<= (+ 49 ~a12~0) 0)) (.cse7 (<= 9 ~a21~0)) (.cse4 (= ~a21~0 10)) (.cse1 (<= 7 ~a21~0)) (.cse9 (<= ~a15~0 8)) (.cse10 (not .cse5)) (.cse8 (<= ~a21~0 9)) (.cse2 (<= ~a15~0 7)) (.cse12 (< 0 .cse15)) (.cse6 (<= ~a12~0 586307)) (.cse0 (= ~a24~0 1)) (.cse14 (<= 10 ~a21~0)) (.cse11 (<= ~a12~0 599999)) (.cse13 (<= 8 ~a15~0))) (or (and .cse0 .cse1 .cse2 (<= ~a21~0 7)) (and .cse0 (= 7 ~a21~0) .cse3 (= ~a15~0 8)) (and .cse0 (not (<= ~a12~0 80)) .cse4 .cse5) (and .cse0 (<= 8 ~a21~0) (<= ~a21~0 8) .cse6) (and .cse7 .cse8 .cse0 .cse9 .cse3) (and (<= ~a21~0 6) .cse2 .cse3) (and .cse7 .cse8 .cse0 .cse9 .cse2 .cse10) (and .cse0 (= 5 ~a15~0) (= ~a21~0 6)) (and .cse0 (<= (+ 397559 ~a12~0) 0) .cse4) (and .cse0 .cse1 .cse11 .cse12 .cse13) (and (<= ~a12~0 73282) .cse0 .cse9 .cse10 .cse14) (and .cse8 .cse0 .cse2 (not (<= .cse15 0))) (and .cse0 .cse12 .cse6 .cse13) (and .cse0 .cse14 .cse11 .cse13)))) [2021-12-22 09:27:04,206 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-12-22 09:27:04,206 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-12-22 09:27:04,206 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-22 09:27:04,206 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-12-22 09:27:04,206 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-12-22 09:27:04,207 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-12-22 09:27:04,207 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-12-22 09:27:04,207 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-12-22 09:27:04,207 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,207 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,207 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,208 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,209 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse15 (+ ~a12~0 43)) (.cse5 (= 7 ~a15~0))) (let ((.cse3 (<= (+ 49 ~a12~0) 0)) (.cse7 (<= 9 ~a21~0)) (.cse4 (= ~a21~0 10)) (.cse1 (<= 7 ~a21~0)) (.cse9 (<= ~a15~0 8)) (.cse10 (not .cse5)) (.cse8 (<= ~a21~0 9)) (.cse2 (<= ~a15~0 7)) (.cse12 (< 0 .cse15)) (.cse6 (<= ~a12~0 586307)) (.cse0 (= ~a24~0 1)) (.cse14 (<= 10 ~a21~0)) (.cse11 (<= ~a12~0 599999)) (.cse13 (<= 8 ~a15~0))) (or (and .cse0 .cse1 .cse2 (<= ~a21~0 7)) (and .cse0 (= 7 ~a21~0) .cse3 (= ~a15~0 8)) (and .cse0 (not (<= ~a12~0 80)) .cse4 .cse5) (and .cse0 (<= 8 ~a21~0) (<= ~a21~0 8) .cse6) (and .cse7 .cse8 .cse0 .cse9 .cse3) (and (<= ~a21~0 6) .cse2 .cse3) (and .cse7 .cse8 .cse0 .cse9 .cse2 .cse10) (and .cse0 (= 5 ~a15~0) (= ~a21~0 6)) (and .cse0 (<= (+ 397559 ~a12~0) 0) .cse4) (and .cse0 .cse1 .cse11 .cse12 .cse13) (and (<= ~a12~0 73282) .cse0 .cse9 .cse10 .cse14) (and .cse8 .cse0 .cse2 (not (<= .cse15 0))) (and .cse0 .cse12 .cse6 .cse13) (and .cse0 .cse14 .cse11 .cse13)))) [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-12-22 09:27:04,210 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-12-22 09:27:04,211 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-12-22 09:27:04,211 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-12-22 09:27:04,211 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-12-22 09:27:04,211 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,211 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,212 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:04,212 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-12-22 09:27:04,212 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-12-22 09:27:04,212 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-12-22 09:27:04,212 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-22 09:27:04,219 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:04,220 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 09:27:04,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 09:27:04 BoogieIcfgContainer [2021-12-22 09:27:04,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 09:27:04,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 09:27:04,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 09:27:04,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 09:27:04,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:26:23" (3/4) ... [2021-12-22 09:27:04,255 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 09:27:04,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-22 09:27:04,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 09:27:04,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 09:27:04,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 09:27:04,363 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 09:27:04,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 09:27:04,363 INFO L158 Benchmark]: Toolchain (without parser) took 42247.04ms. Allocated memory was 119.5MB in the beginning and 1.0GB in the end (delta: 903.9MB). Free memory was 92.6MB in the beginning and 663.0MB in the end (delta: -570.4MB). Peak memory consumption was 333.2MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,363 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 137.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 09:27:04,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.22ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 73.7MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.49ms. Allocated memory is still 119.5MB. Free memory was 73.7MB in the beginning and 64.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,364 INFO L158 Benchmark]: Boogie Preprocessor took 84.45ms. Allocated memory is still 119.5MB. Free memory was 64.1MB in the beginning and 58.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,366 INFO L158 Benchmark]: RCFGBuilder took 931.91ms. Allocated memory was 119.5MB in the beginning and 188.7MB in the end (delta: 69.2MB). Free memory was 57.8MB in the beginning and 145.5MB in the end (delta: -87.6MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,366 INFO L158 Benchmark]: TraceAbstraction took 40534.93ms. Allocated memory was 188.7MB in the beginning and 1.0GB in the end (delta: 834.7MB). Free memory was 144.5MB in the beginning and 681.9MB in the end (delta: -537.4MB). Peak memory consumption was 581.3MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,366 INFO L158 Benchmark]: Witness Printer took 110.82ms. Allocated memory is still 1.0GB. Free memory was 681.9MB in the beginning and 663.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 09:27:04,373 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 86.0MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 137.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.22ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 73.7MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.49ms. Allocated memory is still 119.5MB. Free memory was 73.7MB in the beginning and 64.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.45ms. Allocated memory is still 119.5MB. Free memory was 64.1MB in the beginning and 58.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 931.91ms. Allocated memory was 119.5MB in the beginning and 188.7MB in the end (delta: 69.2MB). Free memory was 57.8MB in the beginning and 145.5MB in the end (delta: -87.6MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * TraceAbstraction took 40534.93ms. Allocated memory was 188.7MB in the beginning and 1.0GB in the end (delta: 834.7MB). Free memory was 144.5MB in the beginning and 681.9MB in the end (delta: -537.4MB). Peak memory consumption was 581.3MB. Max. memory is 16.1GB. * Witness Printer took 110.82ms. Allocated memory is still 1.0GB. Free memory was 681.9MB in the beginning and 663.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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: 128]: 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 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.5s, OverallIterations: 26, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2417 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2417 mSDsluCounter, 2463 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 1641 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15613 IncrementalHoareTripleChecker+Invalid, 17254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1641 mSolverCounterUnsat, 2274 mSDtfsCounter, 15613 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9565 GetRequests, 9490 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6768occurred in iteration=17, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 5874 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 114 NumberOfFragments, 415 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5272 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 3 FomulaSimplificationsInter, 17180 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 18.0s InterpolantComputationTime, 32099 NumberOfCodeBlocks, 32099 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 32837 ConstructedInterpolants, 0 QuantifiedInterpolants, 125663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10863 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 36 InterpolantComputations, 25 PerfectInterpolantSequences, 124102/127020 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: 30]: Loop Invariant Derived loop invariant: (((((((((((((((a24 == 1 && 7 <= a21) && a15 <= 7) && a21 <= 7) || (((a24 == 1 && 7 == a21) && 49 + a12 <= 0) && a15 == 8)) || (((a24 == 1 && !(a12 <= 80)) && a21 == 10) && 7 == a15)) || (((a24 == 1 && 8 <= a21) && a21 <= 8) && a12 <= 586307)) || ((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && 49 + a12 <= 0)) || ((a21 <= 6 && a15 <= 7) && 49 + a12 <= 0)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a15 <= 7) && !(7 == a15))) || ((a24 == 1 && 5 == a15) && a21 == 6)) || ((a24 == 1 && 397559 + a12 <= 0) && a21 == 10)) || ((((a24 == 1 && 7 <= a21) && a12 <= 599999) && 0 < a12 + 43) && 8 <= a15)) || ((((a12 <= 73282 && a24 == 1) && a15 <= 8) && !(7 == a15)) && 10 <= a21)) || (((a21 <= 9 && a24 == 1) && a15 <= 7) && !(a12 + 43 <= 0))) || (((a24 == 1 && 0 < a12 + 43) && a12 <= 586307) && 8 <= a15)) || (((a24 == 1 && 10 <= a21) && a12 <= 599999) && 8 <= a15) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((a24 == 1 && 7 <= a21) && a15 <= 7) && a21 <= 7) || (((a24 == 1 && 7 == a21) && 49 + a12 <= 0) && a15 == 8)) || (((a24 == 1 && !(a12 <= 80)) && a21 == 10) && 7 == a15)) || (((a24 == 1 && 8 <= a21) && a21 <= 8) && a12 <= 586307)) || ((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && 49 + a12 <= 0)) || ((a21 <= 6 && a15 <= 7) && 49 + a12 <= 0)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a15 <= 7) && !(7 == a15))) || ((a24 == 1 && 5 == a15) && a21 == 6)) || ((a24 == 1 && 397559 + a12 <= 0) && a21 == 10)) || ((((a24 == 1 && 7 <= a21) && a12 <= 599999) && 0 < a12 + 43) && 8 <= a15)) || ((((a12 <= 73282 && a24 == 1) && a15 <= 8) && !(7 == a15)) && 10 <= a21)) || (((a21 <= 9 && a24 == 1) && a15 <= 7) && !(a12 + 43 <= 0))) || (((a24 == 1 && 0 < a12 + 43) && a12 <= 586307) && 8 <= a15)) || (((a24 == 1 && 10 <= a21) && a12 <= 599999) && 8 <= a15) RESULT: Ultimate proved your program to be correct! [2021-12-22 09:27:04,401 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