./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/Problem19_label34.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 6a7333ef933779062b72e4ec060ffb43da7d841912b7d7ec92a1b0251fa27640 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:09:58,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:09:58,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:09:58,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:09:58,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:09:58,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:09:58,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:09:58,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:09:58,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:09:58,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:09:58,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:09:58,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:09:58,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:09:58,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:09:58,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:09:58,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:09:58,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:09:58,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:09:58,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:09:58,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:09:58,381 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:09:58,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:09:58,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:09:58,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:09:58,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:09:58,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:09:58,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:09:58,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:09:58,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:09:58,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:09:58,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:09:58,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:09:58,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:09:58,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:09:58,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:09:58,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:09:58,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:09:58,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:09:58,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:09:58,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:09:58,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:09:58,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:09:58,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 13:09:58,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:09:58,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:09:58,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:09:58,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:09:58,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:09:58,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:09:58,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:09:58,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:09:58,425 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:09:58,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:09:58,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:09:58,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 13:09:58,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:09:58,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:09:58,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:09:58,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:09:58,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:09:58,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:09:58,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:09:58,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:09:58,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:09:58,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:09:58,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:09:58,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:09:58,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:09:58,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:09:58,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:09:58,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:09:58,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 13:09:58,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 13:09:58,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:09:58,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:09:58,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:09:58,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a7333ef933779062b72e4ec060ffb43da7d841912b7d7ec92a1b0251fa27640 [2022-07-22 13:09:58,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:09:58,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:09:58,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:09:58,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:09:58,667 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:09:58,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label34.c [2022-07-22 13:09:58,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c07f9e88/8c56bd7eed644ee287982bb0c05850f4/FLAG8d68cb47d [2022-07-22 13:09:59,529 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:09:59,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label34.c [2022-07-22 13:09:59,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c07f9e88/8c56bd7eed644ee287982bb0c05850f4/FLAG8d68cb47d [2022-07-22 13:09:59,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c07f9e88/8c56bd7eed644ee287982bb0c05850f4 [2022-07-22 13:09:59,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:09:59,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:09:59,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:09:59,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:09:59,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:09:59,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:09:59" (1/1) ... [2022-07-22 13:09:59,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcfb1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:09:59, skipping insertion in model container [2022-07-22 13:09:59,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:09:59" (1/1) ... [2022-07-22 13:09:59,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:09:59,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:10:00,134 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/Problem19_label34.c[6640,6653] [2022-07-22 13:10:01,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:10:01,104 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:10:01,132 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/Problem19_label34.c[6640,6653] [2022-07-22 13:10:01,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:10:01,661 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:10:01,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01 WrapperNode [2022-07-22 13:10:01,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:10:01,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:10:01,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:10:01,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:10:01,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:01,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,483 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-22 13:10:02,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:10:02,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:10:02,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:10:02,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:10:02,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:02,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:03,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:10:03,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:10:03,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:10:03,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:10:03,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (1/1) ... [2022-07-22 13:10:03,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:10:03,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:10:03,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 13:10:03,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 13:10:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:10:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 13:10:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:10:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:10:03,490 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:10:03,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:10:08,882 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:10:08,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:10:08,898 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 13:10:08,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:10:08 BoogieIcfgContainer [2022-07-22 13:10:08,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:10:08,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:10:08,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:10:08,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:10:08,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:09:59" (1/3) ... [2022-07-22 13:10:08,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8f5933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:10:08, skipping insertion in model container [2022-07-22 13:10:08,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:10:01" (2/3) ... [2022-07-22 13:10:08,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8f5933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:10:08, skipping insertion in model container [2022-07-22 13:10:08,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:10:08" (3/3) ... [2022-07-22 13:10:08,908 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label34.c [2022-07-22 13:10:08,917 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:10:08,918 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:10:08,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:10:08,980 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@499c84a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62a12b5b [2022-07-22 13:10:08,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:10:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 13:10:08,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:08,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:08,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2022-07-22 13:10:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:09,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502026138] [2022-07-22 13:10:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:10:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:09,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502026138] [2022-07-22 13:10:09,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502026138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:09,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:10:09,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:10:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181693194] [2022-07-22 13:10:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:09,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:10:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:10:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:10:09,236 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:10:18,927 INFO L93 Difference]: Finished difference Result 6288 states and 12045 transitions. [2022-07-22 13:10:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:10:18,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-07-22 13:10:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:10:18,960 INFO L225 Difference]: With dead ends: 6288 [2022-07-22 13:10:18,960 INFO L226 Difference]: Without dead ends: 4471 [2022-07-22 13:10:18,967 INFO L412 NwaCegarLoop]: 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 [2022-07-22 13:10:18,971 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 4582 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 3651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 10775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3651 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-22 13:10:18,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 1011 Invalid, 10775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3651 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-07-22 13:10:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-07-22 13:10:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4467. [2022-07-22 13:10:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5665024630541873) internal successors, (6996), 4466 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6996 transitions. [2022-07-22 13:10:19,134 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6996 transitions. Word has length 50 [2022-07-22 13:10:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:10:19,135 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6996 transitions. [2022-07-22 13:10:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6996 transitions. [2022-07-22 13:10:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-22 13:10:19,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:19,149 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:19,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 13:10:19,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash -60815551, now seen corresponding path program 1 times [2022-07-22 13:10:19,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:19,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86164093] [2022-07-22 13:10:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:19,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 13:10:19,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:19,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86164093] [2022-07-22 13:10:19,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86164093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:19,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:10:19,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:10:19,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762319680] [2022-07-22 13:10:19,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:19,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:10:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:10:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:10:19,516 INFO L87 Difference]: Start difference. First operand 4467 states and 6996 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:10:27,946 INFO L93 Difference]: Finished difference Result 11710 states and 20221 transitions. [2022-07-22 13:10:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:10:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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 324 [2022-07-22 13:10:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:10:28,006 INFO L225 Difference]: With dead ends: 11710 [2022-07-22 13:10:28,006 INFO L226 Difference]: Without dead ends: 8610 [2022-07-22 13:10:28,016 INFO L412 NwaCegarLoop]: 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 [2022-07-22 13:10:28,018 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9445 mSolverCounterSat, 1332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 10777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1332 IncrementalHoareTripleChecker+Valid, 9445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-22 13:10:28,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2155 Invalid, 10777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1332 Valid, 9445 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-22 13:10:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-07-22 13:10:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8596. [2022-07-22 13:10:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.348458406050029) internal successors, (11590), 8595 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11590 transitions. [2022-07-22 13:10:28,183 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11590 transitions. Word has length 324 [2022-07-22 13:10:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:10:28,186 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11590 transitions. [2022-07-22 13:10:28,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11590 transitions. [2022-07-22 13:10:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-22 13:10:28,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:28,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:28,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 13:10:28,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1954138457, now seen corresponding path program 1 times [2022-07-22 13:10:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:28,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871416033] [2022-07-22 13:10:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 13:10:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:28,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871416033] [2022-07-22 13:10:28,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871416033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:28,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:10:28,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:10:28,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361311185] [2022-07-22 13:10:28,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:28,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:10:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:10:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:10:28,448 INFO L87 Difference]: Start difference. First operand 8596 states and 11590 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:10:34,639 INFO L93 Difference]: Finished difference Result 14491 states and 20461 transitions. [2022-07-22 13:10:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:10:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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 352 [2022-07-22 13:10:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:10:34,677 INFO L225 Difference]: With dead ends: 14491 [2022-07-22 13:10:34,677 INFO L226 Difference]: Without dead ends: 8596 [2022-07-22 13:10:34,699 INFO L412 NwaCegarLoop]: 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 [2022-07-22 13:10:34,700 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:10:34,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2115 Invalid, 7329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7321 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 13:10:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-07-22 13:10:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8596. [2022-07-22 13:10:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.3469458987783596) internal successors, (11577), 8595 states have internal predecessors, (11577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11577 transitions. [2022-07-22 13:10:34,796 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11577 transitions. Word has length 352 [2022-07-22 13:10:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:10:34,797 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11577 transitions. [2022-07-22 13:10:34,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11577 transitions. [2022-07-22 13:10:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-07-22 13:10:34,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:34,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:34,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 13:10:34,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash -21632050, now seen corresponding path program 1 times [2022-07-22 13:10:34,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:34,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990535780] [2022-07-22 13:10:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 117 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:10:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990535780] [2022-07-22 13:10:35,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990535780] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:10:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921594661] [2022-07-22 13:10:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:35,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:10:35,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:10:35,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:10:35,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 13:10:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:35,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:10:35,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:10:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:10:35,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:10:35,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921594661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:35,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:10:35,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-22 13:10:35,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393229356] [2022-07-22 13:10:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:35,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:10:35,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:10:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:10:35,578 INFO L87 Difference]: Start difference. First operand 8596 states and 11577 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:10:40,556 INFO L93 Difference]: Finished difference Result 19935 states and 28708 transitions. [2022-07-22 13:10:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:10:40,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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 604 [2022-07-22 13:10:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:10:40,588 INFO L225 Difference]: With dead ends: 19935 [2022-07-22 13:10:40,588 INFO L226 Difference]: Without dead ends: 14071 [2022-07-22 13:10:40,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:10:40,599 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1730 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 13:10:40,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1508 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 13:10:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2022-07-22 13:10:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 14071. [2022-07-22 13:10:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14071 states, 14070 states have (on average 1.2694385216773276) internal successors, (17861), 14070 states have internal predecessors, (17861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14071 states to 14071 states and 17861 transitions. [2022-07-22 13:10:40,814 INFO L78 Accepts]: Start accepts. Automaton has 14071 states and 17861 transitions. Word has length 604 [2022-07-22 13:10:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:10:40,815 INFO L495 AbstractCegarLoop]: Abstraction has 14071 states and 17861 transitions. [2022-07-22 13:10:40,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14071 states and 17861 transitions. [2022-07-22 13:10:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-07-22 13:10:40,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:40,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:40,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 13:10:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:10:41,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 82559656, now seen corresponding path program 1 times [2022-07-22 13:10:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:41,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763516432] [2022-07-22 13:10:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-22 13:10:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:41,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763516432] [2022-07-22 13:10:41,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763516432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:41,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:10:41,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:10:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015807030] [2022-07-22 13:10:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:41,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:10:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:10:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:10:41,294 INFO L87 Difference]: Start difference. First operand 14071 states and 17861 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:10:47,565 INFO L93 Difference]: Finished difference Result 36504 states and 47794 transitions. [2022-07-22 13:10:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:10:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 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 605 [2022-07-22 13:10:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:10:47,593 INFO L225 Difference]: With dead ends: 36504 [2022-07-22 13:10:47,593 INFO L226 Difference]: Without dead ends: 25165 [2022-07-22 13:10:47,600 INFO L412 NwaCegarLoop]: 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 [2022-07-22 13:10:47,600 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2110 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 13:10:47,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 964 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 13:10:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25165 states. [2022-07-22 13:10:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25165 to 23797. [2022-07-22 13:10:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23797 states, 23796 states have (on average 1.2674399058665322) internal successors, (30160), 23796 states have internal predecessors, (30160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23797 states to 23797 states and 30160 transitions. [2022-07-22 13:10:47,807 INFO L78 Accepts]: Start accepts. Automaton has 23797 states and 30160 transitions. Word has length 605 [2022-07-22 13:10:47,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:10:47,808 INFO L495 AbstractCegarLoop]: Abstraction has 23797 states and 30160 transitions. [2022-07-22 13:10:47,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 23797 states and 30160 transitions. [2022-07-22 13:10:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-07-22 13:10:47,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:47,812 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:47,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 13:10:47,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1289471842, now seen corresponding path program 1 times [2022-07-22 13:10:47,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:47,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202325939] [2022-07-22 13:10:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:47,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 13:10:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202325939] [2022-07-22 13:10:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202325939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:48,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:10:48,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:10:48,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649636506] [2022-07-22 13:10:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:48,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:10:48,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:10:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:10:48,032 INFO L87 Difference]: Start difference. First operand 23797 states and 30160 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:10:53,395 INFO L93 Difference]: Finished difference Result 50347 states and 65462 transitions. [2022-07-22 13:10:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:10:53,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 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 622 [2022-07-22 13:10:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:10:53,456 INFO L225 Difference]: With dead ends: 50347 [2022-07-22 13:10:53,457 INFO L226 Difference]: Without dead ends: 29282 [2022-07-22 13:10:53,478 INFO L412 NwaCegarLoop]: 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 [2022-07-22 13:10:53,479 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1377 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 13:10:53,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 723 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2125 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 13:10:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-07-22 13:10:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 29267. [2022-07-22 13:10:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29267 states, 29266 states have (on average 1.2553133328777422) internal successors, (36738), 29266 states have internal predecessors, (36738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 36738 transitions. [2022-07-22 13:10:53,791 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 36738 transitions. Word has length 622 [2022-07-22 13:10:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:10:53,792 INFO L495 AbstractCegarLoop]: Abstraction has 29267 states and 36738 transitions. [2022-07-22 13:10:53,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:10:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 36738 transitions. [2022-07-22 13:10:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2022-07-22 13:10:53,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:10:53,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:10:53,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 13:10:53,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:10:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:10:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash 279482666, now seen corresponding path program 1 times [2022-07-22 13:10:53,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:10:53,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483720546] [2022-07-22 13:10:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:10:53,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:10:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:10:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-22 13:10:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:10:54,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483720546] [2022-07-22 13:10:54,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483720546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:10:54,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:10:54,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 13:10:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509368859] [2022-07-22 13:10:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:10:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:10:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:10:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:10:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:10:54,109 INFO L87 Difference]: Start difference. First operand 29267 states and 36738 transitions. Second operand has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:02,742 INFO L93 Difference]: Finished difference Result 98282 states and 126943 transitions. [2022-07-22 13:11:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:11:02,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 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 834 [2022-07-22 13:11:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:02,840 INFO L225 Difference]: With dead ends: 98282 [2022-07-22 13:11:02,841 INFO L226 Difference]: Without dead ends: 71747 [2022-07-22 13:11:02,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:11:02,874 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 3380 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8462 mSolverCounterSat, 3305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 11767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3305 IncrementalHoareTripleChecker+Valid, 8462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:02,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3380 Valid, 1082 Invalid, 11767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3305 Valid, 8462 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-22 13:11:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71747 states. [2022-07-22 13:11:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71747 to 68933. [2022-07-22 13:11:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68933 states, 68932 states have (on average 1.223118435559682) internal successors, (84312), 68932 states have internal predecessors, (84312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68933 states to 68933 states and 84312 transitions. [2022-07-22 13:11:04,094 INFO L78 Accepts]: Start accepts. Automaton has 68933 states and 84312 transitions. Word has length 834 [2022-07-22 13:11:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:04,094 INFO L495 AbstractCegarLoop]: Abstraction has 68933 states and 84312 transitions. [2022-07-22 13:11:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 68933 states and 84312 transitions. [2022-07-22 13:11:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-07-22 13:11:04,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:04,103 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:11:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 13:11:04,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 390301225, now seen corresponding path program 1 times [2022-07-22 13:11:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:04,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204255869] [2022-07-22 13:11:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 293 proven. 88 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-22 13:11:04,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:04,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204255869] [2022-07-22 13:11:04,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204255869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:11:04,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417704323] [2022-07-22 13:11:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:04,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:04,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:11:04,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:11:04,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 13:11:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:11:04,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:11:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-07-22 13:11:05,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:11:05,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417704323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:05,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:11:05,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 13:11:05,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772337364] [2022-07-22 13:11:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:05,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:11:05,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:05,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:11:05,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:05,074 INFO L87 Difference]: Start difference. First operand 68933 states and 84312 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:10,887 INFO L93 Difference]: Finished difference Result 176184 states and 219727 transitions. [2022-07-22 13:11:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:11:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 910 [2022-07-22 13:11:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:11,094 INFO L225 Difference]: With dead ends: 176184 [2022-07-22 13:11:11,095 INFO L226 Difference]: Without dead ends: 109983 [2022-07-22 13:11:11,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 910 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:11,140 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1577 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:11,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 953 Invalid, 6056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 4974 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 13:11:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109983 states. [2022-07-22 13:11:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109983 to 107160. [2022-07-22 13:11:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107160 states, 107159 states have (on average 1.252027361210911) internal successors, (134166), 107159 states have internal predecessors, (134166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107160 states to 107160 states and 134166 transitions. [2022-07-22 13:11:12,890 INFO L78 Accepts]: Start accepts. Automaton has 107160 states and 134166 transitions. Word has length 910 [2022-07-22 13:11:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:12,903 INFO L495 AbstractCegarLoop]: Abstraction has 107160 states and 134166 transitions. [2022-07-22 13:11:12,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 107160 states and 134166 transitions. [2022-07-22 13:11:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2022-07-22 13:11:12,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:12,960 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:11:12,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 13:11:13,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 13:11:13,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1812576373, now seen corresponding path program 1 times [2022-07-22 13:11:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:13,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895709746] [2022-07-22 13:11:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:13,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-22 13:11:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895709746] [2022-07-22 13:11:13,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895709746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:13,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:11:13,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 13:11:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55432106] [2022-07-22 13:11:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 13:11:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 13:11:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:13,726 INFO L87 Difference]: Start difference. First operand 107160 states and 134166 transitions. Second operand has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:21,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:21,236 INFO L93 Difference]: Finished difference Result 219881 states and 274099 transitions. [2022-07-22 13:11:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:11:21,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 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 1087 [2022-07-22 13:11:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:21,392 INFO L225 Difference]: With dead ends: 219881 [2022-07-22 13:11:21,392 INFO L226 Difference]: Without dead ends: 107261 [2022-07-22 13:11:21,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:21,440 INFO L413 NwaCegarLoop]: 2885 mSDtfsCounter, 1488 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 9601 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 10709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 9601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:21,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 3420 Invalid, 10709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1108 Valid, 9601 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-22 13:11:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107261 states. [2022-07-22 13:11:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107261 to 105776. [2022-07-22 13:11:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105776 states, 105775 states have (on average 1.1805719688017018) internal successors, (124875), 105775 states have internal predecessors, (124875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105776 states to 105776 states and 124875 transitions. [2022-07-22 13:11:22,879 INFO L78 Accepts]: Start accepts. Automaton has 105776 states and 124875 transitions. Word has length 1087 [2022-07-22 13:11:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:22,880 INFO L495 AbstractCegarLoop]: Abstraction has 105776 states and 124875 transitions. [2022-07-22 13:11:22,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 105776 states and 124875 transitions. [2022-07-22 13:11:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2022-07-22 13:11:22,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:22,896 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:11:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 13:11:22,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:22,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:22,897 INFO L85 PathProgramCache]: Analyzing trace with hash 858171085, now seen corresponding path program 1 times [2022-07-22 13:11:22,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:22,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989965034] [2022-07-22 13:11:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 829 proven. 366 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-22 13:11:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:23,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989965034] [2022-07-22 13:11:23,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989965034] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:11:23,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944186532] [2022-07-22 13:11:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:23,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:11:23,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:11:23,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 13:11:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:23,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:11:23,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:11:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-22 13:11:23,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:11:23,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944186532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:23,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:11:23,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 13:11:23,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028555366] [2022-07-22 13:11:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:23,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:11:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:11:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:23,941 INFO L87 Difference]: Start difference. First operand 105776 states and 124875 transitions. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:28,974 INFO L93 Difference]: Finished difference Result 248415 states and 293954 transitions. [2022-07-22 13:11:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:11:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 1087 [2022-07-22 13:11:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:29,153 INFO L225 Difference]: With dead ends: 248415 [2022-07-22 13:11:29,153 INFO L226 Difference]: Without dead ends: 142639 [2022-07-22 13:11:29,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1088 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:29,176 INFO L413 NwaCegarLoop]: 2622 mSDtfsCounter, 1474 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3773 mSolverCounterSat, 1598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 3773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:29,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 2712 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1598 Valid, 3773 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 13:11:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142639 states. [2022-07-22 13:11:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142639 to 137172. [2022-07-22 13:11:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137172 states, 137171 states have (on average 1.168927834600608) internal successors, (160343), 137171 states have internal predecessors, (160343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137172 states to 137172 states and 160343 transitions. [2022-07-22 13:11:31,066 INFO L78 Accepts]: Start accepts. Automaton has 137172 states and 160343 transitions. Word has length 1087 [2022-07-22 13:11:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:31,078 INFO L495 AbstractCegarLoop]: Abstraction has 137172 states and 160343 transitions. [2022-07-22 13:11:31,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 137172 states and 160343 transitions. [2022-07-22 13:11:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2022-07-22 13:11:31,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:31,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:11:31,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 13:11:31,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:31,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1544097456, now seen corresponding path program 1 times [2022-07-22 13:11:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:31,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167007993] [2022-07-22 13:11:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 789 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-07-22 13:11:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167007993] [2022-07-22 13:11:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167007993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:31,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:11:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:11:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2947475] [2022-07-22 13:11:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:31,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:11:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:11:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:11:31,907 INFO L87 Difference]: Start difference. First operand 137172 states and 160343 transitions. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:37,378 INFO L93 Difference]: Finished difference Result 271620 states and 317963 transitions. [2022-07-22 13:11:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:11:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 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 1120 [2022-07-22 13:11:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:37,529 INFO L225 Difference]: With dead ends: 271620 [2022-07-22 13:11:37,529 INFO L226 Difference]: Without dead ends: 137180 [2022-07-22 13:11:37,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:11:37,569 INFO L413 NwaCegarLoop]: 2815 mSDtfsCounter, 1345 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 5240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:37,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3000 Invalid, 5240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [866 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-22 13:11:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137180 states. [2022-07-22 13:11:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137180 to 137170. [2022-07-22 13:11:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137170 states, 137169 states have (on average 1.1237816124634574) internal successors, (154148), 137169 states have internal predecessors, (154148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137170 states to 137170 states and 154148 transitions. [2022-07-22 13:11:39,156 INFO L78 Accepts]: Start accepts. Automaton has 137170 states and 154148 transitions. Word has length 1120 [2022-07-22 13:11:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:39,156 INFO L495 AbstractCegarLoop]: Abstraction has 137170 states and 154148 transitions. [2022-07-22 13:11:39,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 137170 states and 154148 transitions. [2022-07-22 13:11:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2022-07-22 13:11:39,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:39,181 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:11:39,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 13:11:39,181 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:39,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1134934162, now seen corresponding path program 1 times [2022-07-22 13:11:39,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:39,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951099333] [2022-07-22 13:11:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:39,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 1130 proven. 366 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-22 13:11:39,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:39,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951099333] [2022-07-22 13:11:39,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951099333] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:11:39,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086272851] [2022-07-22 13:11:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:39,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:39,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:11:39,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:11:39,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 13:11:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:40,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:11:40,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:11:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-07-22 13:11:40,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:11:40,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086272851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:40,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:11:40,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 13:11:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267030151] [2022-07-22 13:11:40,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:40,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:11:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:11:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:40,363 INFO L87 Difference]: Start difference. First operand 137170 states and 154148 transitions. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:45,868 INFO L93 Difference]: Finished difference Result 303015 states and 341118 transitions. [2022-07-22 13:11:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:11:45,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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 1168 [2022-07-22 13:11:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:46,112 INFO L225 Difference]: With dead ends: 303015 [2022-07-22 13:11:46,112 INFO L226 Difference]: Without dead ends: 168577 [2022-07-22 13:11:46,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:11:46,185 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1543 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 5320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:46,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1152 Invalid, 5320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 4680 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 13:11:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168577 states. [2022-07-22 13:11:47,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168577 to 164471. [2022-07-22 13:11:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164471 states, 164470 states have (on average 1.1024381346142154) internal successors, (181318), 164470 states have internal predecessors, (181318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164471 states to 164471 states and 181318 transitions. [2022-07-22 13:11:48,130 INFO L78 Accepts]: Start accepts. Automaton has 164471 states and 181318 transitions. Word has length 1168 [2022-07-22 13:11:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:48,131 INFO L495 AbstractCegarLoop]: Abstraction has 164471 states and 181318 transitions. [2022-07-22 13:11:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 164471 states and 181318 transitions. [2022-07-22 13:11:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2022-07-22 13:11:48,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:48,153 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 13:11:48,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 13:11:48,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:48,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2005928558, now seen corresponding path program 1 times [2022-07-22 13:11:48,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:48,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060640780] [2022-07-22 13:11:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:48,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 848 proven. 484 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 13:11:49,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060640780] [2022-07-22 13:11:49,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060640780] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:11:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572433501] [2022-07-22 13:11:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:49,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:49,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:11:49,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:11:49,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 13:11:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:49,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:11:49,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:11:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2022-07-22 13:11:49,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:11:49,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572433501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:49,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:11:49,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 13:11:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008538512] [2022-07-22 13:11:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:49,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:11:49,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:11:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 13:11:49,747 INFO L87 Difference]: Start difference. First operand 164471 states and 181318 transitions. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:11:55,350 INFO L93 Difference]: Finished difference Result 333127 states and 367123 transitions. [2022-07-22 13:11:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:11:55,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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 1203 [2022-07-22 13:11:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:11:55,553 INFO L225 Difference]: With dead ends: 333127 [2022-07-22 13:11:55,553 INFO L226 Difference]: Without dead ends: 171388 [2022-07-22 13:11:55,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 13:11:55,626 INFO L413 NwaCegarLoop]: 2966 mSDtfsCounter, 1353 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 1549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 5625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1549 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 13:11:55,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 3131 Invalid, 5625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1549 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 13:11:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171388 states. [2022-07-22 13:11:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171388 to 168590. [2022-07-22 13:11:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168590 states, 168589 states have (on average 1.0765589688532466) internal successors, (181496), 168589 states have internal predecessors, (181496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168590 states to 168590 states and 181496 transitions. [2022-07-22 13:11:57,547 INFO L78 Accepts]: Start accepts. Automaton has 168590 states and 181496 transitions. Word has length 1203 [2022-07-22 13:11:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:11:57,548 INFO L495 AbstractCegarLoop]: Abstraction has 168590 states and 181496 transitions. [2022-07-22 13:11:57,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:11:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 168590 states and 181496 transitions. [2022-07-22 13:11:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2022-07-22 13:11:57,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:11:57,561 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:11:57,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 13:11:57,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 13:11:57,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:11:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:11:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -126547261, now seen corresponding path program 1 times [2022-07-22 13:11:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:11:57,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349574420] [2022-07-22 13:11:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:11:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 1211 proven. 485 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-22 13:11:58,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:11:58,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349574420] [2022-07-22 13:11:58,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349574420] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:11:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477632166] [2022-07-22 13:11:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:11:58,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:11:58,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:11:58,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:11:58,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 13:11:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:11:58,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:11:58,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:11:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-07-22 13:11:59,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:11:59,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477632166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:11:59,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:11:59,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-22 13:11:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956330727] [2022-07-22 13:11:59,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:11:59,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:11:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:11:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:11:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:11:59,114 INFO L87 Difference]: Start difference. First operand 168590 states and 181496 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) [2022-07-22 13:12:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:12:05,404 INFO L93 Difference]: Finished difference Result 423269 states and 457904 transitions. [2022-07-22 13:12:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:12:05,405 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 1209 [2022-07-22 13:12:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:12:05,732 INFO L225 Difference]: With dead ends: 423269 [2022-07-22 13:12:05,733 INFO L226 Difference]: Without dead ends: 257411 [2022-07-22 13:12:05,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:12:05,828 INFO L413 NwaCegarLoop]: 3024 mSDtfsCounter, 1294 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4936 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 5809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 4936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-22 13:12:05,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 3194 Invalid, 5809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 4936 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-22 13:12:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257411 states. [2022-07-22 13:12:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257411 to 253226. [2022-07-22 13:12:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253226 states, 253225 states have (on average 1.06717741139303) internal successors, (270236), 253225 states have internal predecessors, (270236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:12:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253226 states to 253226 states and 270236 transitions. [2022-07-22 13:12:09,067 INFO L78 Accepts]: Start accepts. Automaton has 253226 states and 270236 transitions. Word has length 1209 [2022-07-22 13:12:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:12:09,068 INFO L495 AbstractCegarLoop]: Abstraction has 253226 states and 270236 transitions. [2022-07-22 13:12:09,068 INFO L496 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) [2022-07-22 13:12:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 253226 states and 270236 transitions. [2022-07-22 13:12:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2022-07-22 13:12:09,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:12:09,087 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:12:09,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 13:12:09,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:12:09,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:12:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:12:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash 205267277, now seen corresponding path program 1 times [2022-07-22 13:12:09,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:12:09,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362306535] [2022-07-22 13:12:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:12:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:12:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:12:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1478 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-07-22 13:12:09,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:12:09,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362306535] [2022-07-22 13:12:09,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362306535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:12:09,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:12:09,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:12:09,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433456346] [2022-07-22 13:12:09,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:12:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:12:09,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:12:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:12:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:12:09,646 INFO L87 Difference]: Start difference. First operand 253226 states and 270236 transitions. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 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)