./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/Problem18_label31.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 48e151e171192faba98bea76b0a05f258efede2f42bdf4a8243efed731650338 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:03:27,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:03:27,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:03:27,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:03:27,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:03:27,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:03:27,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:03:27,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:03:27,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:03:27,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:03:27,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:03:27,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:03:27,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:03:27,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:03:27,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:03:27,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:03:27,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:03:27,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:03:27,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:03:27,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:03:27,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:03:27,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:03:27,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:03:27,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:03:27,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:03:27,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:03:27,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:03:27,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:03:27,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:03:27,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:03:27,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:03:27,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:03:27,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:03:27,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:03:27,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:03:27,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:03:27,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:03:27,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:03:27,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:03:27,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:03:27,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:03:27,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:03:27,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:03:27,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:03:27,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:03:27,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:03:27,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:03:27,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:03:27,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:03:27,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:03:27,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:03:27,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:03:27,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:03:27,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:03:27,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:03:27,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:03:27,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:03:27,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:03:27,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:03:27,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:03:27,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:03:27,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:03:27,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:03:27,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:03:27,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:03:27,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:03:27,837 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:03:27,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:03:27,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:03:27,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:03:27,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e151e171192faba98bea76b0a05f258efede2f42bdf4a8243efed731650338 [2021-12-15 10:03:28,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:03:28,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:03:28,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:03:28,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:03:28,032 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:03:28,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label31.c [2021-12-15 10:03:28,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec81c5d2/16271a2bcec2479c998f35444a5d3d20/FLAGe2447fd08 [2021-12-15 10:03:28,620 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:03:28,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label31.c [2021-12-15 10:03:28,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec81c5d2/16271a2bcec2479c998f35444a5d3d20/FLAGe2447fd08 [2021-12-15 10:03:29,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec81c5d2/16271a2bcec2479c998f35444a5d3d20 [2021-12-15 10:03:29,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:03:29,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:03:29,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:03:29,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:03:29,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:03:29,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:03:29" (1/1) ... [2021-12-15 10:03:29,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2712c144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:29, skipping insertion in model container [2021-12-15 10:03:29,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:03:29" (1/1) ... [2021-12-15 10:03:29,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:03:29,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:03:29,353 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/Problem18_label31.c[1896,1909] [2021-12-15 10:03:29,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:03:29,832 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:03:29,841 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/Problem18_label31.c[1896,1909] [2021-12-15 10:03:30,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:03:30,105 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:03:30,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30 WrapperNode [2021-12-15 10:03:30,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:03:30,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:03:30,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:03:30,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:03:30,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,295 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2021-12-15 10:03:30,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:03:30,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:03:30,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:03:30,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:03:30,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:03:30,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:03:30,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:03:30,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:03:30,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (1/1) ... [2021-12-15 10:03:30,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:03:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:03:30,495 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) [2021-12-15 10:03:30,521 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 [2021-12-15 10:03:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:03:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:03:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:03:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:03:30,576 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:03:30,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:03:32,566 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:03:32,576 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:03:32,576 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 10:03:32,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:03:32 BoogieIcfgContainer [2021-12-15 10:03:32,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:03:32,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:03:32,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:03:32,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:03:32,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:03:29" (1/3) ... [2021-12-15 10:03:32,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4e6e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:03:32, skipping insertion in model container [2021-12-15 10:03:32,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:03:30" (2/3) ... [2021-12-15 10:03:32,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4e6e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:03:32, skipping insertion in model container [2021-12-15 10:03:32,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:03:32" (3/3) ... [2021-12-15 10:03:32,584 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label31.c [2021-12-15 10:03:32,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:03:32,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:03:32,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:03:32,630 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 [2021-12-15 10:03:32,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:03:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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) [2021-12-15 10:03:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 10:03:32,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:32,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:03:32,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2021-12-15 10:03:32,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:32,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149720278] [2021-12-15 10:03:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:32,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:03:32,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:32,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149720278] [2021-12-15 10:03:32,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149720278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:32,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:32,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:32,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490010193] [2021-12-15 10:03:32,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:32,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 10:03:32,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 10:03:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 10:03:32,851 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:03:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:36,753 INFO L93 Difference]: Finished difference Result 2910 states and 5661 transitions. [2021-12-15 10:03:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 10:03:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-12-15 10:03:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:36,776 INFO L225 Difference]: With dead ends: 2910 [2021-12-15 10:03:36,776 INFO L226 Difference]: Without dead ends: 2080 [2021-12-15 10:03:36,781 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 [2021-12-15 10:03:36,784 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2203 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 1774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 5164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1774 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:36,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2203 Valid, 168 Invalid, 5164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1774 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-15 10:03:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-12-15 10:03:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2074. [2021-12-15 10:03:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.5561987457790643) internal successors, (3226), 2073 states have internal predecessors, (3226), 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) [2021-12-15 10:03:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3226 transitions. [2021-12-15 10:03:36,883 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3226 transitions. Word has length 15 [2021-12-15 10:03:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:36,883 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 3226 transitions. [2021-12-15 10:03:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:03:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3226 transitions. [2021-12-15 10:03:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-15 10:03:36,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:36,888 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1] [2021-12-15 10:03:36,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:03:36,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:36,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash -478575888, now seen corresponding path program 1 times [2021-12-15 10:03:36,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:36,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046332524] [2021-12-15 10:03:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:36,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-15 10:03:37,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:37,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046332524] [2021-12-15 10:03:37,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046332524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:37,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:37,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:37,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817817944] [2021-12-15 10:03:37,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:37,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 10:03:37,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 10:03:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 10:03:37,041 INFO L87 Difference]: Start difference. First operand 2074 states and 3226 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-12-15 10:03:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:40,160 INFO L93 Difference]: Finished difference Result 6216 states and 9564 transitions. [2021-12-15 10:03:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 10:03:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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 175 [2021-12-15 10:03:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:40,174 INFO L225 Difference]: With dead ends: 6216 [2021-12-15 10:03:40,174 INFO L226 Difference]: Without dead ends: 4144 [2021-12-15 10:03:40,181 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 [2021-12-15 10:03:40,183 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 1922 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4114 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 4635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 4114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:40,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 647 Invalid, 4635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 4114 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-15 10:03:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2021-12-15 10:03:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 4144. [2021-12-15 10:03:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2927830074825006) internal successors, (5356), 4143 states have internal predecessors, (5356), 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) [2021-12-15 10:03:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5356 transitions. [2021-12-15 10:03:40,248 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5356 transitions. Word has length 175 [2021-12-15 10:03:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:40,249 INFO L470 AbstractCegarLoop]: Abstraction has 4144 states and 5356 transitions. [2021-12-15 10:03:40,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-12-15 10:03:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5356 transitions. [2021-12-15 10:03:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-12-15 10:03:40,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:40,264 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:03:40,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 10:03:40,266 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash 426780047, now seen corresponding path program 1 times [2021-12-15 10:03:40,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:40,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465857762] [2021-12-15 10:03:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:40,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:03:40,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465857762] [2021-12-15 10:03:40,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465857762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:40,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:40,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:40,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876851687] [2021-12-15 10:03:40,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:40,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 10:03:40,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:40,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 10:03:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 10:03:40,494 INFO L87 Difference]: Start difference. First operand 4144 states and 5356 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-12-15 10:03:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:42,823 INFO L93 Difference]: Finished difference Result 9029 states and 11975 transitions. [2021-12-15 10:03:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 10:03:42,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 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 264 [2021-12-15 10:03:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:42,837 INFO L225 Difference]: With dead ends: 9029 [2021-12-15 10:03:42,837 INFO L226 Difference]: Without dead ends: 5524 [2021-12-15 10:03:42,840 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 [2021-12-15 10:03:42,840 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:42,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 636 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 10:03:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2021-12-15 10:03:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5524. [2021-12-15 10:03:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.1611443056309976) internal successors, (6413), 5523 states have internal predecessors, (6413), 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) [2021-12-15 10:03:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6413 transitions. [2021-12-15 10:03:42,899 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6413 transitions. Word has length 264 [2021-12-15 10:03:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:42,900 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 6413 transitions. [2021-12-15 10:03:42,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-12-15 10:03:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6413 transitions. [2021-12-15 10:03:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2021-12-15 10:03:42,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:42,913 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:42,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 10:03:42,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -248264961, now seen corresponding path program 1 times [2021-12-15 10:03:42,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356086445] [2021-12-15 10:03:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:42,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-15 10:03:43,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:43,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356086445] [2021-12-15 10:03:43,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356086445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:43,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:43,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:43,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284404330] [2021-12-15 10:03:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:43,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:43,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:43,273 INFO L87 Difference]: Start difference. First operand 5524 states and 6413 transitions. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2021-12-15 10:03:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:45,006 INFO L93 Difference]: Finished difference Result 13806 states and 16458 transitions. [2021-12-15 10:03:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:45,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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 896 [2021-12-15 10:03:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:45,030 INFO L225 Difference]: With dead ends: 13806 [2021-12-15 10:03:45,030 INFO L226 Difference]: Without dead ends: 8974 [2021-12-15 10:03:45,037 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 [2021-12-15 10:03:45,044 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 646 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:45,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 103 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-15 10:03:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8974 states. [2021-12-15 10:03:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8974 to 8284. [2021-12-15 10:03:45,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.1935289146444525) internal successors, (9886), 8283 states have internal predecessors, (9886), 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) [2021-12-15 10:03:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 9886 transitions. [2021-12-15 10:03:45,144 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 9886 transitions. Word has length 896 [2021-12-15 10:03:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:45,145 INFO L470 AbstractCegarLoop]: Abstraction has 8284 states and 9886 transitions. [2021-12-15 10:03:45,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2021-12-15 10:03:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 9886 transitions. [2021-12-15 10:03:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2021-12-15 10:03:45,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:45,159 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:45,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 10:03:45,159 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash 846475988, now seen corresponding path program 1 times [2021-12-15 10:03:45,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:45,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663488939] [2021-12-15 10:03:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:45,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-12-15 10:03:45,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:45,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663488939] [2021-12-15 10:03:45,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663488939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:45,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:45,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:03:45,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349369243] [2021-12-15 10:03:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:45,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:45,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:45,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:45,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:45,532 INFO L87 Difference]: Start difference. First operand 8284 states and 9886 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 2 states have internal predecessors, (533), 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) [2021-12-15 10:03:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:47,167 INFO L93 Difference]: Finished difference Result 17946 states and 21837 transitions. [2021-12-15 10:03:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:47,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 2 states have internal predecessors, (533), 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 897 [2021-12-15 10:03:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:47,199 INFO L225 Difference]: With dead ends: 17946 [2021-12-15 10:03:47,200 INFO L226 Difference]: Without dead ends: 10354 [2021-12-15 10:03:47,207 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 [2021-12-15 10:03:47,208 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 189 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:47,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 365 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 10:03:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10354 states. [2021-12-15 10:03:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10354 to 10354. [2021-12-15 10:03:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10354 states, 10353 states have (on average 1.176373997875012) internal successors, (12179), 10353 states have internal predecessors, (12179), 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) [2021-12-15 10:03:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10354 states to 10354 states and 12179 transitions. [2021-12-15 10:03:47,363 INFO L78 Accepts]: Start accepts. Automaton has 10354 states and 12179 transitions. Word has length 897 [2021-12-15 10:03:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:47,365 INFO L470 AbstractCegarLoop]: Abstraction has 10354 states and 12179 transitions. [2021-12-15 10:03:47,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 2 states have internal predecessors, (533), 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) [2021-12-15 10:03:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 10354 states and 12179 transitions. [2021-12-15 10:03:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2021-12-15 10:03:47,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:47,384 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:47,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 10:03:47,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1001144310, now seen corresponding path program 1 times [2021-12-15 10:03:47,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:47,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252016469] [2021-12-15 10:03:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:47,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-15 10:03:47,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:47,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252016469] [2021-12-15 10:03:47,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252016469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:47,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:47,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:03:47,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673901911] [2021-12-15 10:03:47,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:47,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:47,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:47,673 INFO L87 Difference]: Start difference. First operand 10354 states and 12179 transitions. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 2 states have internal predecessors, (589), 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) [2021-12-15 10:03:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:49,327 INFO L93 Difference]: Finished difference Result 24156 states and 29518 transitions. [2021-12-15 10:03:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:49,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 2 states have internal predecessors, (589), 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 963 [2021-12-15 10:03:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:49,345 INFO L225 Difference]: With dead ends: 24156 [2021-12-15 10:03:49,346 INFO L226 Difference]: Without dead ends: 14494 [2021-12-15 10:03:49,351 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 [2021-12-15 10:03:49,351 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:49,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 389 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-15 10:03:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2021-12-15 10:03:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 14494. [2021-12-15 10:03:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14494 states, 14493 states have (on average 1.1490374663630718) internal successors, (16653), 14493 states have internal predecessors, (16653), 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) [2021-12-15 10:03:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14494 states to 14494 states and 16653 transitions. [2021-12-15 10:03:49,477 INFO L78 Accepts]: Start accepts. Automaton has 14494 states and 16653 transitions. Word has length 963 [2021-12-15 10:03:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 14494 states and 16653 transitions. [2021-12-15 10:03:49,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 2 states have internal predecessors, (589), 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) [2021-12-15 10:03:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 14494 states and 16653 transitions. [2021-12-15 10:03:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2021-12-15 10:03:49,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:49,486 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:49,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 10:03:49,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash 750101783, now seen corresponding path program 1 times [2021-12-15 10:03:49,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:49,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826847831] [2021-12-15 10:03:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:49,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2021-12-15 10:03:49,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:49,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826847831] [2021-12-15 10:03:49,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826847831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:49,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:49,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:49,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872456489] [2021-12-15 10:03:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:49,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:49,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:49,771 INFO L87 Difference]: Start difference. First operand 14494 states and 16653 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2021-12-15 10:03:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:51,407 INFO L93 Difference]: Finished difference Result 28296 states and 32613 transitions. [2021-12-15 10:03:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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 982 [2021-12-15 10:03:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:51,427 INFO L225 Difference]: With dead ends: 28296 [2021-12-15 10:03:51,427 INFO L226 Difference]: Without dead ends: 14494 [2021-12-15 10:03:51,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:51,440 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 782 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:51,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 780 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 10:03:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2021-12-15 10:03:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 14494. [2021-12-15 10:03:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14494 states, 14493 states have (on average 1.124335886289933) internal successors, (16295), 14493 states have internal predecessors, (16295), 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) [2021-12-15 10:03:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14494 states to 14494 states and 16295 transitions. [2021-12-15 10:03:51,569 INFO L78 Accepts]: Start accepts. Automaton has 14494 states and 16295 transitions. Word has length 982 [2021-12-15 10:03:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:51,570 INFO L470 AbstractCegarLoop]: Abstraction has 14494 states and 16295 transitions. [2021-12-15 10:03:51,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2021-12-15 10:03:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14494 states and 16295 transitions. [2021-12-15 10:03:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2021-12-15 10:03:51,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:51,580 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:51,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 10:03:51,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:51,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -843846698, now seen corresponding path program 1 times [2021-12-15 10:03:51,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302582924] [2021-12-15 10:03:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:51,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 325 proven. 555 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-15 10:03:51,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302582924] [2021-12-15 10:03:51,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302582924] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:03:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795506270] [2021-12-15 10:03:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:51,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:03:51,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:03:51,984 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) [2021-12-15 10:03:51,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 10:03:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:52,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 10:03:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:03:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-12-15 10:03:53,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:03:53,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795506270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:53,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:03:53,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-15 10:03:53,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049005582] [2021-12-15 10:03:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:53,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:53,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 10:03:53,380 INFO L87 Difference]: Start difference. First operand 14494 states and 16295 transitions. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2021-12-15 10:03:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:55,039 INFO L93 Difference]: Finished difference Result 31746 states and 36032 transitions. [2021-12-15 10:03:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 1090 [2021-12-15 10:03:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:55,059 INFO L225 Difference]: With dead ends: 31746 [2021-12-15 10:03:55,059 INFO L226 Difference]: Without dead ends: 15184 [2021-12-15 10:03:55,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1090 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 10:03:55,074 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 649 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:55,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 973 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 10:03:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15184 states. [2021-12-15 10:03:55,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15184 to 13804. [2021-12-15 10:03:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13804 states, 13803 states have (on average 1.0678113453597045) internal successors, (14739), 13803 states have internal predecessors, (14739), 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) [2021-12-15 10:03:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13804 states to 13804 states and 14739 transitions. [2021-12-15 10:03:55,197 INFO L78 Accepts]: Start accepts. Automaton has 13804 states and 14739 transitions. Word has length 1090 [2021-12-15 10:03:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:55,198 INFO L470 AbstractCegarLoop]: Abstraction has 13804 states and 14739 transitions. [2021-12-15 10:03:55,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2021-12-15 10:03:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13804 states and 14739 transitions. [2021-12-15 10:03:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2021-12-15 10:03:55,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:55,211 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:55,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 10:03:55,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:03:55,427 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:55,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:55,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1703425889, now seen corresponding path program 1 times [2021-12-15 10:03:55,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:55,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480474039] [2021-12-15 10:03:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:55,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-12-15 10:03:55,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:55,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480474039] [2021-12-15 10:03:55,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480474039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:55,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:55,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:55,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974148599] [2021-12-15 10:03:55,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:55,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:55,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:55,704 INFO L87 Difference]: Start difference. First operand 13804 states and 14739 transitions. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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) [2021-12-15 10:03:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:57,243 INFO L93 Difference]: Finished difference Result 33126 states and 35401 transitions. [2021-12-15 10:03:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:57,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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 1195 [2021-12-15 10:03:57,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:57,262 INFO L225 Difference]: With dead ends: 33126 [2021-12-15 10:03:57,263 INFO L226 Difference]: Without dead ends: 20014 [2021-12-15 10:03:57,273 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 [2021-12-15 10:03:57,274 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 575 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:57,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 907 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-15 10:03:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20014 states. [2021-12-15 10:03:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20014 to 19324. [2021-12-15 10:03:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19324 states, 19323 states have (on average 1.0592558091393676) internal successors, (20468), 19323 states have internal predecessors, (20468), 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) [2021-12-15 10:03:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 20468 transitions. [2021-12-15 10:03:57,423 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 20468 transitions. Word has length 1195 [2021-12-15 10:03:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:57,424 INFO L470 AbstractCegarLoop]: Abstraction has 19324 states and 20468 transitions. [2021-12-15 10:03:57,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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) [2021-12-15 10:03:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 20468 transitions. [2021-12-15 10:03:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2021-12-15 10:03:57,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:57,441 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:57,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 10:03:57,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1186362950, now seen corresponding path program 1 times [2021-12-15 10:03:57,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:57,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640884312] [2021-12-15 10:03:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:57,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1026 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2021-12-15 10:03:57,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:57,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640884312] [2021-12-15 10:03:57,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640884312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:57,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:57,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:57,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345093114] [2021-12-15 10:03:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:57,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:57,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:57,780 INFO L87 Difference]: Start difference. First operand 19324 states and 20468 transitions. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 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) [2021-12-15 10:03:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:03:59,078 INFO L93 Difference]: Finished difference Result 37956 states and 40243 transitions. [2021-12-15 10:03:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:03:59,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 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) Word has length 1256 [2021-12-15 10:03:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:03:59,096 INFO L225 Difference]: With dead ends: 37956 [2021-12-15 10:03:59,096 INFO L226 Difference]: Without dead ends: 19324 [2021-12-15 10:03:59,107 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 [2021-12-15 10:03:59,107 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 600 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-15 10:03:59,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 933 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-15 10:03:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19324 states. [2021-12-15 10:03:59,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19324 to 19324. [2021-12-15 10:03:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19324 states, 19323 states have (on average 1.0519588055684934) internal successors, (20327), 19323 states have internal predecessors, (20327), 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) [2021-12-15 10:03:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 20327 transitions. [2021-12-15 10:03:59,241 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 20327 transitions. Word has length 1256 [2021-12-15 10:03:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:03:59,242 INFO L470 AbstractCegarLoop]: Abstraction has 19324 states and 20327 transitions. [2021-12-15 10:03:59,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 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) [2021-12-15 10:03:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 20327 transitions. [2021-12-15 10:03:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2021-12-15 10:03:59,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:03:59,297 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:03:59,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 10:03:59,297 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:03:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:03:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -129027846, now seen corresponding path program 1 times [2021-12-15 10:03:59,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:03:59,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728214055] [2021-12-15 10:03:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:03:59,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:03:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:03:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1706 backedges. 1024 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2021-12-15 10:03:59,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:03:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728214055] [2021-12-15 10:03:59,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728214055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:03:59,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:03:59,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:03:59,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839513259] [2021-12-15 10:03:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:03:59,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:03:59,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:03:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:03:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:03:59,568 INFO L87 Difference]: Start difference. First operand 19324 states and 20327 transitions. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2021-12-15 10:04:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:01,026 INFO L93 Difference]: Finished difference Result 42786 states and 45137 transitions. [2021-12-15 10:04:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:01,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 1264 [2021-12-15 10:04:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:01,117 INFO L225 Difference]: With dead ends: 42786 [2021-12-15 10:04:01,117 INFO L226 Difference]: Without dead ends: 23464 [2021-12-15 10:04:01,126 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 [2021-12-15 10:04:01,126 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 601 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:01,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 272 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2021-12-15 10:04:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 23464. [2021-12-15 10:04:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23463 states have (on average 1.0504624302092656) internal successors, (24647), 23463 states have internal predecessors, (24647), 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) [2021-12-15 10:04:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 24647 transitions. [2021-12-15 10:04:01,338 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 24647 transitions. Word has length 1264 [2021-12-15 10:04:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:01,339 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 24647 transitions. [2021-12-15 10:04:01,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2021-12-15 10:04:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 24647 transitions. [2021-12-15 10:04:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1266 [2021-12-15 10:04:01,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:01,356 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:01,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 10:04:01,356 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:01,357 INFO L85 PathProgramCache]: Analyzing trace with hash 493244255, now seen corresponding path program 1 times [2021-12-15 10:04:01,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:01,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741604936] [2021-12-15 10:04:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:01,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 513 proven. 729 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-15 10:04:01,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:01,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741604936] [2021-12-15 10:04:01,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741604936] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:04:01,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447012768] [2021-12-15 10:04:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:01,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:04:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:04:01,700 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) [2021-12-15 10:04:01,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 10:04:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:01,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 10:04:01,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:04:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-12-15 10:04:03,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:04:03,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447012768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:03,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:04:03,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-15 10:04:03,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787736180] [2021-12-15 10:04:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:03,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:03,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:03,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:03,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 10:04:03,407 INFO L87 Difference]: Start difference. First operand 23464 states and 24647 transitions. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2021-12-15 10:04:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:04,846 INFO L93 Difference]: Finished difference Result 49686 states and 52566 transitions. [2021-12-15 10:04:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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 1265 [2021-12-15 10:04:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:04,877 INFO L225 Difference]: With dead ends: 49686 [2021-12-15 10:04:04,877 INFO L226 Difference]: Without dead ends: 26914 [2021-12-15 10:04:04,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1265 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 10:04:04,895 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 504 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:04,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 955 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26914 states. [2021-12-15 10:04:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26914 to 26914. [2021-12-15 10:04:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 26913 states have (on average 1.047486344889087) internal successors, (28191), 26913 states have internal predecessors, (28191), 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) [2021-12-15 10:04:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 28191 transitions. [2021-12-15 10:04:05,149 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 28191 transitions. Word has length 1265 [2021-12-15 10:04:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:05,150 INFO L470 AbstractCegarLoop]: Abstraction has 26914 states and 28191 transitions. [2021-12-15 10:04:05,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2021-12-15 10:04:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 28191 transitions. [2021-12-15 10:04:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2021-12-15 10:04:05,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:05,165 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:05,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 10:04:05,379 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,SelfDestructingSolverStorable11 [2021-12-15 10:04:05,379 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash -877800536, now seen corresponding path program 1 times [2021-12-15 10:04:05,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:05,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713879491] [2021-12-15 10:04:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:05,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 1108 proven. 330 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-15 10:04:05,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:05,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713879491] [2021-12-15 10:04:05,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713879491] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:04:05,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911514533] [2021-12-15 10:04:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:05,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:04:05,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:04:05,749 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) [2021-12-15 10:04:05,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 10:04:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:05,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 10:04:05,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:04:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-12-15 10:04:07,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:04:07,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911514533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:07,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:04:07,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-12-15 10:04:07,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55136107] [2021-12-15 10:04:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:07,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:07,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 10:04:07,422 INFO L87 Difference]: Start difference. First operand 26914 states and 28191 transitions. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2021-12-15 10:04:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:08,850 INFO L93 Difference]: Finished difference Result 63486 states and 67003 transitions. [2021-12-15 10:04:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:08,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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 1267 [2021-12-15 10:04:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:08,888 INFO L225 Difference]: With dead ends: 63486 [2021-12-15 10:04:08,888 INFO L226 Difference]: Without dead ends: 37264 [2021-12-15 10:04:08,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 10:04:08,906 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 625 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:08,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 133 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37264 states. [2021-12-15 10:04:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37264 to 36574. [2021-12-15 10:04:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36574 states, 36573 states have (on average 1.0482323025182512) internal successors, (38337), 36573 states have internal predecessors, (38337), 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) [2021-12-15 10:04:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36574 states to 36574 states and 38337 transitions. [2021-12-15 10:04:09,301 INFO L78 Accepts]: Start accepts. Automaton has 36574 states and 38337 transitions. Word has length 1267 [2021-12-15 10:04:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:09,302 INFO L470 AbstractCegarLoop]: Abstraction has 36574 states and 38337 transitions. [2021-12-15 10:04:09,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2021-12-15 10:04:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 36574 states and 38337 transitions. [2021-12-15 10:04:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1354 [2021-12-15 10:04:09,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:09,326 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-15 10:04:09,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 10:04:09,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:04:09,543 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1571361322, now seen corresponding path program 1 times [2021-12-15 10:04:09,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:09,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004603308] [2021-12-15 10:04:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:09,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2021-12-15 10:04:09,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004603308] [2021-12-15 10:04:09,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004603308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:09,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:04:09,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:04:09,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012616001] [2021-12-15 10:04:09,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:09,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:09,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:04:09,866 INFO L87 Difference]: Start difference. First operand 36574 states and 38337 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2021-12-15 10:04:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:10,744 INFO L93 Difference]: Finished difference Result 37271 states and 39034 transitions. [2021-12-15 10:04:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:10,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 1353 [2021-12-15 10:04:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:10,773 INFO L225 Difference]: With dead ends: 37271 [2021-12-15 10:04:10,773 INFO L226 Difference]: Without dead ends: 36574 [2021-12-15 10:04:10,778 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 [2021-12-15 10:04:10,779 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:10,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 994 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 10:04:10,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36574 states. [2021-12-15 10:04:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36574 to 36574. [2021-12-15 10:04:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36574 states, 36573 states have (on average 1.0480135619172615) internal successors, (38329), 36573 states have internal predecessors, (38329), 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) [2021-12-15 10:04:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36574 states to 36574 states and 38329 transitions. [2021-12-15 10:04:11,045 INFO L78 Accepts]: Start accepts. Automaton has 36574 states and 38329 transitions. Word has length 1353 [2021-12-15 10:04:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:11,045 INFO L470 AbstractCegarLoop]: Abstraction has 36574 states and 38329 transitions. [2021-12-15 10:04:11,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2021-12-15 10:04:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 36574 states and 38329 transitions. [2021-12-15 10:04:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2021-12-15 10:04:11,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:11,064 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:11,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 10:04:11,064 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash 579734397, now seen corresponding path program 1 times [2021-12-15 10:04:11,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:11,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098643308] [2021-12-15 10:04:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:11,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2021-12-15 10:04:11,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098643308] [2021-12-15 10:04:11,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098643308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:11,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:04:11,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:04:11,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539132407] [2021-12-15 10:04:11,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:11,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:11,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:04:11,362 INFO L87 Difference]: Start difference. First operand 36574 states and 38329 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2021-12-15 10:04:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:12,869 INFO L93 Difference]: Finished difference Result 73146 states and 76656 transitions. [2021-12-15 10:04:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 1372 [2021-12-15 10:04:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:12,902 INFO L225 Difference]: With dead ends: 73146 [2021-12-15 10:04:12,902 INFO L226 Difference]: Without dead ends: 36574 [2021-12-15 10:04:12,923 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 [2021-12-15 10:04:12,923 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 681 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:12,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 957 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36574 states. [2021-12-15 10:04:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36574 to 36574. [2021-12-15 10:04:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36574 states, 36573 states have (on average 1.0412326032865775) internal successors, (38081), 36573 states have internal predecessors, (38081), 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) [2021-12-15 10:04:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36574 states to 36574 states and 38081 transitions. [2021-12-15 10:04:13,191 INFO L78 Accepts]: Start accepts. Automaton has 36574 states and 38081 transitions. Word has length 1372 [2021-12-15 10:04:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:13,192 INFO L470 AbstractCegarLoop]: Abstraction has 36574 states and 38081 transitions. [2021-12-15 10:04:13,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2021-12-15 10:04:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 36574 states and 38081 transitions. [2021-12-15 10:04:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1374 [2021-12-15 10:04:13,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:13,209 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:13,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 10:04:13,209 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash -223490323, now seen corresponding path program 1 times [2021-12-15 10:04:13,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:13,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282808504] [2021-12-15 10:04:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:13,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 627 proven. 205 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2021-12-15 10:04:13,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:13,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282808504] [2021-12-15 10:04:13,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282808504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:04:13,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2579273] [2021-12-15 10:04:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:13,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:04:13,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:04:13,575 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) [2021-12-15 10:04:13,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 10:04:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 10:04:13,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:04:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 668 proven. 0 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2021-12-15 10:04:15,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:04:15,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2579273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:15,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:04:15,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-15 10:04:15,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709453009] [2021-12-15 10:04:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:15,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:15,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 10:04:15,155 INFO L87 Difference]: Start difference. First operand 36574 states and 38081 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 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) [2021-12-15 10:04:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:16,677 INFO L93 Difference]: Finished difference Result 72456 states and 75469 transitions. [2021-12-15 10:04:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:16,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 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 1373 [2021-12-15 10:04:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:16,712 INFO L225 Difference]: With dead ends: 72456 [2021-12-15 10:04:16,712 INFO L226 Difference]: Without dead ends: 34504 [2021-12-15 10:04:16,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1376 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 10:04:16,735 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 580 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:16,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 815 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34504 states. [2021-12-15 10:04:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34504 to 34504. [2021-12-15 10:04:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34504 states, 34503 states have (on average 1.0332724690606614) internal successors, (35651), 34503 states have internal predecessors, (35651), 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) [2021-12-15 10:04:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34504 states to 34504 states and 35651 transitions. [2021-12-15 10:04:17,069 INFO L78 Accepts]: Start accepts. Automaton has 34504 states and 35651 transitions. Word has length 1373 [2021-12-15 10:04:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:17,070 INFO L470 AbstractCegarLoop]: Abstraction has 34504 states and 35651 transitions. [2021-12-15 10:04:17,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 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) [2021-12-15 10:04:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 34504 states and 35651 transitions. [2021-12-15 10:04:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2021-12-15 10:04:17,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:17,094 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:17,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 10:04:17,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-15 10:04:17,313 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:17,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2060760857, now seen corresponding path program 1 times [2021-12-15 10:04:17,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:17,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222990011] [2021-12-15 10:04:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:17,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2409 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2021-12-15 10:04:17,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:17,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222990011] [2021-12-15 10:04:17,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222990011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:17,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:04:17,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:04:17,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751423317] [2021-12-15 10:04:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:17,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:17,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:04:17,617 INFO L87 Difference]: Start difference. First operand 34504 states and 35651 transitions. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2021-12-15 10:04:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:19,238 INFO L93 Difference]: Finished difference Result 83496 states and 86597 transitions. [2021-12-15 10:04:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 1412 [2021-12-15 10:04:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:19,282 INFO L225 Difference]: With dead ends: 83496 [2021-12-15 10:04:19,282 INFO L226 Difference]: Without dead ends: 49684 [2021-12-15 10:04:19,298 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 [2021-12-15 10:04:19,298 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 550 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:19,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 274 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-15 10:04:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49684 states. [2021-12-15 10:04:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49684 to 48304. [2021-12-15 10:04:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48304 states, 48303 states have (on average 1.0299153261702172) internal successors, (49748), 48303 states have internal predecessors, (49748), 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) [2021-12-15 10:04:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48304 states to 48304 states and 49748 transitions. [2021-12-15 10:04:19,645 INFO L78 Accepts]: Start accepts. Automaton has 48304 states and 49748 transitions. Word has length 1412 [2021-12-15 10:04:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:19,646 INFO L470 AbstractCegarLoop]: Abstraction has 48304 states and 49748 transitions. [2021-12-15 10:04:19,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2021-12-15 10:04:19,646 INFO L276 IsEmpty]: Start isEmpty. Operand 48304 states and 49748 transitions. [2021-12-15 10:04:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1442 [2021-12-15 10:04:19,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:19,668 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:04:19,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 10:04:19,668 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1516182551, now seen corresponding path program 1 times [2021-12-15 10:04:19,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:19,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861853437] [2021-12-15 10:04:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:19,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2239 backedges. 1212 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-12-15 10:04:19,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861853437] [2021-12-15 10:04:19,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861853437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:19,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:04:19,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:04:19,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963238738] [2021-12-15 10:04:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:19,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:19,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:04:19,975 INFO L87 Difference]: Start difference. First operand 48304 states and 49748 transitions. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 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) [2021-12-15 10:04:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:21,607 INFO L93 Difference]: Finished difference Result 106266 states and 109736 transitions. [2021-12-15 10:04:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 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 1441 [2021-12-15 10:04:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:21,661 INFO L225 Difference]: With dead ends: 106266 [2021-12-15 10:04:21,661 INFO L226 Difference]: Without dead ends: 57964 [2021-12-15 10:04:21,682 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 [2021-12-15 10:04:21,683 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 489 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:21,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 945 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57964 states. [2021-12-15 10:04:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57964 to 57964. [2021-12-15 10:04:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57964 states, 57963 states have (on average 1.0290357641944) internal successors, (59646), 57963 states have internal predecessors, (59646), 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) [2021-12-15 10:04:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57964 states to 57964 states and 59646 transitions. [2021-12-15 10:04:22,144 INFO L78 Accepts]: Start accepts. Automaton has 57964 states and 59646 transitions. Word has length 1441 [2021-12-15 10:04:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:22,145 INFO L470 AbstractCegarLoop]: Abstraction has 57964 states and 59646 transitions. [2021-12-15 10:04:22,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 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) [2021-12-15 10:04:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 57964 states and 59646 transitions. [2021-12-15 10:04:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1469 [2021-12-15 10:04:22,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:22,167 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:22,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 10:04:22,167 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash -239592481, now seen corresponding path program 1 times [2021-12-15 10:04:22,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:22,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981255767] [2021-12-15 10:04:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:22,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1810 backedges. 1364 proven. 330 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-15 10:04:22,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981255767] [2021-12-15 10:04:22,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981255767] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:04:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636942816] [2021-12-15 10:04:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:22,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:04:22,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:04:22,883 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) [2021-12-15 10:04:22,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 10:04:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:23,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 10:04:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:04:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1810 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2021-12-15 10:04:24,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:04:24,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636942816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:24,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:04:24,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-12-15 10:04:24,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380935597] [2021-12-15 10:04:24,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:24,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:24,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 10:04:24,632 INFO L87 Difference]: Start difference. First operand 57964 states and 59646 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2021-12-15 10:04:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:04:26,221 INFO L93 Difference]: Finished difference Result 115926 states and 119290 transitions. [2021-12-15 10:04:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:04:26,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 1468 [2021-12-15 10:04:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:04:26,279 INFO L225 Difference]: With dead ends: 115926 [2021-12-15 10:04:26,280 INFO L226 Difference]: Without dead ends: 57964 [2021-12-15 10:04:26,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1474 GetRequests, 1467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 10:04:26,312 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 689 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:04:26,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 891 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 10:04:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57964 states. [2021-12-15 10:04:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57964 to 55894. [2021-12-15 10:04:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55894 states, 55893 states have (on average 1.0257635124255273) internal successors, (57333), 55893 states have internal predecessors, (57333), 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) [2021-12-15 10:04:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55894 states to 55894 states and 57333 transitions. [2021-12-15 10:04:26,872 INFO L78 Accepts]: Start accepts. Automaton has 55894 states and 57333 transitions. Word has length 1468 [2021-12-15 10:04:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:04:26,873 INFO L470 AbstractCegarLoop]: Abstraction has 55894 states and 57333 transitions. [2021-12-15 10:04:26,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2021-12-15 10:04:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 55894 states and 57333 transitions. [2021-12-15 10:04:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1631 [2021-12-15 10:04:26,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:04:26,919 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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] [2021-12-15 10:04:26,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-15 10:04:27,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:04:27,124 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:04:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:04:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1050561526, now seen corresponding path program 1 times [2021-12-15 10:04:27,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:04:27,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607885174] [2021-12-15 10:04:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:04:27,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:04:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:04:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 2502 trivial. 0 not checked. [2021-12-15 10:04:27,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:04:27,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607885174] [2021-12-15 10:04:27,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607885174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:04:27,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:04:27,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:04:27,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308082108] [2021-12-15 10:04:27,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:04:27,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:04:27,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:04:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:04:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:04:27,644 INFO L87 Difference]: Start difference. First operand 55894 states and 57333 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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)