./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label57.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 606add1ed9f1e0586ce8d6fd9687905298c8e4323967309eabbf0457b8710a5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 23:57:37,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 23:57:37,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 23:57:37,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 23:57:37,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 23:57:37,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 23:57:37,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 23:57:37,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 23:57:37,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 23:57:37,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 23:57:37,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 23:57:37,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 23:57:37,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 23:57:37,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 23:57:37,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 23:57:37,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 23:57:37,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 23:57:37,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 23:57:37,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 23:57:37,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 23:57:37,427 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 23:57:37,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 23:57:37,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 23:57:37,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 23:57:37,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 23:57:37,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 23:57:37,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 23:57:37,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 23:57:37,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 23:57:37,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 23:57:37,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 23:57:37,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 23:57:37,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 23:57:37,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 23:57:37,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 23:57:37,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 23:57:37,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 23:57:37,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 23:57:37,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 23:57:37,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 23:57:37,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 23:57:37,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 23:57:37,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 23:57:37,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 23:57:37,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 23:57:37,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 23:57:37,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 23:57:37,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 23:57:37,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 23:57:37,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 23:57:37,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 23:57:37,470 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 23:57:37,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 23:57:37,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 23:57:37,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 23:57:37,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 23:57:37,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 23:57:37,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 23:57:37,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 23:57:37,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 23:57:37,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 23:57:37,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 23:57:37,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 23:57:37,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 23:57:37,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 23:57:37,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 23:57:37,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 23:57:37,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:57:37,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 23:57:37,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 23:57:37,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 23:57:37,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 23:57:37,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 23:57:37,474 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 23:57:37,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 23:57:37,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 23:57:37,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 606add1ed9f1e0586ce8d6fd9687905298c8e4323967309eabbf0457b8710a5c [2022-07-20 23:57:37,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 23:57:37,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 23:57:37,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 23:57:37,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 23:57:37,756 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 23:57:37,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label57.c [2022-07-20 23:57:37,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9120b7182/1dd912694a7244f09cc5b68c4bf247b9/FLAGacef8647c [2022-07-20 23:57:38,415 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 23:57:38,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label57.c [2022-07-20 23:57:38,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9120b7182/1dd912694a7244f09cc5b68c4bf247b9/FLAGacef8647c [2022-07-20 23:57:38,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9120b7182/1dd912694a7244f09cc5b68c4bf247b9 [2022-07-20 23:57:38,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 23:57:38,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 23:57:38,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 23:57:38,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 23:57:38,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 23:57:38,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:57:38" (1/1) ... [2022-07-20 23:57:38,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a65f861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:38, skipping insertion in model container [2022-07-20 23:57:38,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:57:38" (1/1) ... [2022-07-20 23:57:38,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 23:57:38,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 23:57:39,143 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/Problem13_label57.c[8676,8689] [2022-07-20 23:57:39,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:57:39,748 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 23:57:39,778 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/Problem13_label57.c[8676,8689] [2022-07-20 23:57:40,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:57:40,116 INFO L208 MainTranslator]: Completed translation [2022-07-20 23:57:40,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40 WrapperNode [2022-07-20 23:57:40,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 23:57:40,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 23:57:40,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 23:57:40,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 23:57:40,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:40,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:40,753 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-20 23:57:40,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 23:57:40,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 23:57:40,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 23:57:40,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 23:57:40,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:40,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:40,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:40,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:41,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:41,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:41,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:41,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 23:57:41,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 23:57:41,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 23:57:41,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 23:57:41,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (1/1) ... [2022-07-20 23:57:41,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:57:41,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:57:41,297 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) [2022-07-20 23:57:41,353 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 [2022-07-20 23:57:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 23:57:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 23:57:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 23:57:41,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 23:57:41,540 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 23:57:41,541 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 23:57:44,747 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 23:57:44,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 23:57:44,759 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 23:57:44,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:57:44 BoogieIcfgContainer [2022-07-20 23:57:44,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 23:57:44,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 23:57:44,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 23:57:44,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 23:57:44,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:57:38" (1/3) ... [2022-07-20 23:57:44,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc09656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:57:44, skipping insertion in model container [2022-07-20 23:57:44,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:40" (2/3) ... [2022-07-20 23:57:44,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc09656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:57:44, skipping insertion in model container [2022-07-20 23:57:44,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:57:44" (3/3) ... [2022-07-20 23:57:44,768 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label57.c [2022-07-20 23:57:44,778 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 23:57:44,778 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 23:57:44,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 23:57:44,829 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@173b2189, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@541b1bd6 [2022-07-20 23:57:44,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 23:57:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-20 23:57:44,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:44,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:57:44,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1818267785, now seen corresponding path program 1 times [2022-07-20 23:57:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:44,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139340713] [2022-07-20 23:57:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:44,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:45,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139340713] [2022-07-20 23:57:45,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139340713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:45,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:45,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744628524] [2022-07-20 23:57:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:45,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:45,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:45,050 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:48,344 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-07-20 23:57:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:48,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-20 23:57:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:48,394 INFO L225 Difference]: With dead ends: 3035 [2022-07-20 23:57:48,408 INFO L226 Difference]: Without dead ends: 1873 [2022-07-20 23:57:48,416 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 [2022-07-20 23:57:48,422 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 844 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:48,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-20 23:57:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-20 23:57:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-07-20 23:57:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-07-20 23:57:48,558 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 61 [2022-07-20 23:57:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:48,559 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-07-20 23:57:48,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-07-20 23:57:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-20 23:57:48,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:48,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-20 23:57:48,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 23:57:48,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash -63921315, now seen corresponding path program 1 times [2022-07-20 23:57:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828757184] [2022-07-20 23:57:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:48,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:48,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828757184] [2022-07-20 23:57:48,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828757184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:48,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:48,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493684845] [2022-07-20 23:57:48,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:48,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:48,752 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:52,033 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-07-20 23:57:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:52,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-07-20 23:57:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:52,044 INFO L225 Difference]: With dead ends: 5317 [2022-07-20 23:57:52,044 INFO L226 Difference]: Without dead ends: 3460 [2022-07-20 23:57:52,050 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 [2022-07-20 23:57:52,051 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:52,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-20 23:57:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-07-20 23:57:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-07-20 23:57:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-07-20 23:57:52,110 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 133 [2022-07-20 23:57:52,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:52,112 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-07-20 23:57:52,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-07-20 23:57:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-20 23:57:52,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:52,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-20 23:57:52,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 23:57:52,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash -135656058, now seen corresponding path program 1 times [2022-07-20 23:57:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:52,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893291375] [2022-07-20 23:57:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:52,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:52,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893291375] [2022-07-20 23:57:52,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893291375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:52,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:52,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:57:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341335243] [2022-07-20 23:57:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:57:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:57:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:57:52,283 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:56,168 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-07-20 23:57:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:57:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-07-20 23:57:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:56,228 INFO L225 Difference]: With dead ends: 10870 [2022-07-20 23:57:56,228 INFO L226 Difference]: Without dead ends: 7413 [2022-07-20 23:57:56,232 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 [2022-07-20 23:57:56,251 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2579 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 4951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:56,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2579 Valid, 1003 Invalid, 4951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-20 23:57:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-07-20 23:57:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-07-20 23:57:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2698691134799622) internal successors, (9411), 7411 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9411 transitions. [2022-07-20 23:57:56,352 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9411 transitions. Word has length 147 [2022-07-20 23:57:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:56,354 INFO L495 AbstractCegarLoop]: Abstraction has 7412 states and 9411 transitions. [2022-07-20 23:57:56,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9411 transitions. [2022-07-20 23:57:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-20 23:57:56,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:56,356 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:57:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 23:57:56,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash -540021261, now seen corresponding path program 1 times [2022-07-20 23:57:56,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:56,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417683384] [2022-07-20 23:57:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:56,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 23:57:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:56,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417683384] [2022-07-20 23:57:56,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417683384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:56,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:56,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796648640] [2022-07-20 23:57:56,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:56,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:56,504 INFO L87 Difference]: Start difference. First operand 7412 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:59,467 INFO L93 Difference]: Finished difference Result 20357 states and 26252 transitions. [2022-07-20 23:57:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:59,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 228 [2022-07-20 23:57:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:59,517 INFO L225 Difference]: With dead ends: 20357 [2022-07-20 23:57:59,518 INFO L226 Difference]: Without dead ends: 13734 [2022-07-20 23:57:59,537 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 [2022-07-20 23:57:59,543 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:59,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 980 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:57:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2022-07-20 23:57:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 12937. [2022-07-20 23:57:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12937 states, 12936 states have (on average 1.215213358070501) internal successors, (15720), 12936 states have internal predecessors, (15720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 15720 transitions. [2022-07-20 23:57:59,917 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 15720 transitions. Word has length 228 [2022-07-20 23:57:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:59,918 INFO L495 AbstractCegarLoop]: Abstraction has 12937 states and 15720 transitions. [2022-07-20 23:57:59,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 15720 transitions. [2022-07-20 23:57:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-20 23:57:59,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:59,922 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, 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] [2022-07-20 23:57:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 23:57:59,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash 521952067, now seen corresponding path program 1 times [2022-07-20 23:57:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:59,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914689689] [2022-07-20 23:57:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:59,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:58:00,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:00,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914689689] [2022-07-20 23:58:00,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914689689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:00,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:00,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872909624] [2022-07-20 23:58:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:00,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:00,039 INFO L87 Difference]: Start difference. First operand 12937 states and 15720 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:02,952 INFO L93 Difference]: Finished difference Result 31392 states and 39119 transitions. [2022-07-20 23:58:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2022-07-20 23:58:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:02,980 INFO L225 Difference]: With dead ends: 31392 [2022-07-20 23:58:02,980 INFO L226 Difference]: Without dead ends: 19244 [2022-07-20 23:58:02,990 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 [2022-07-20 23:58:02,990 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:02,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:58:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2022-07-20 23:58:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18447. [2022-07-20 23:58:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18446 states have (on average 1.2024287108316165) internal successors, (22180), 18446 states have internal predecessors, (22180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 22180 transitions. [2022-07-20 23:58:03,173 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 22180 transitions. Word has length 260 [2022-07-20 23:58:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:03,175 INFO L495 AbstractCegarLoop]: Abstraction has 18447 states and 22180 transitions. [2022-07-20 23:58:03,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 22180 transitions. [2022-07-20 23:58:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-07-20 23:58:03,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:03,183 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:03,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 23:58:03,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1450383638, now seen corresponding path program 1 times [2022-07-20 23:58:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:03,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19017150] [2022-07-20 23:58:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-20 23:58:03,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:03,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19017150] [2022-07-20 23:58:03,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19017150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:03,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:03,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799428156] [2022-07-20 23:58:03,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:03,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:03,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:58:03,339 INFO L87 Difference]: Start difference. First operand 18447 states and 22180 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:07,897 INFO L93 Difference]: Finished difference Result 59763 states and 73269 transitions. [2022-07-20 23:58:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 349 [2022-07-20 23:58:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:07,981 INFO L225 Difference]: With dead ends: 59763 [2022-07-20 23:58:07,982 INFO L226 Difference]: Without dead ends: 42105 [2022-07-20 23:58:08,004 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 [2022-07-20 23:58:08,006 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1765 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4635 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 5814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:08,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 773 Invalid, 5814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4635 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-20 23:58:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42105 states. [2022-07-20 23:58:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42105 to 42101. [2022-07-20 23:58:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42101 states, 42100 states have (on average 1.1870308788598576) internal successors, (49974), 42100 states have internal predecessors, (49974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42101 states to 42101 states and 49974 transitions. [2022-07-20 23:58:08,566 INFO L78 Accepts]: Start accepts. Automaton has 42101 states and 49974 transitions. Word has length 349 [2022-07-20 23:58:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:08,567 INFO L495 AbstractCegarLoop]: Abstraction has 42101 states and 49974 transitions. [2022-07-20 23:58:08,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 42101 states and 49974 transitions. [2022-07-20 23:58:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-07-20 23:58:08,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:08,573 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:08,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 23:58:08,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:08,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1030719342, now seen corresponding path program 1 times [2022-07-20 23:58:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:08,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435400093] [2022-07-20 23:58:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-20 23:58:08,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:08,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435400093] [2022-07-20 23:58:08,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435400093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:08,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:08,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:08,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182871012] [2022-07-20 23:58:08,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:08,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:08,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:08,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:08,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:58:08,671 INFO L87 Difference]: Start difference. First operand 42101 states and 49974 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:15,090 INFO L93 Difference]: Finished difference Result 142668 states and 170390 transitions. [2022-07-20 23:58:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 349 [2022-07-20 23:58:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:15,227 INFO L225 Difference]: With dead ends: 142668 [2022-07-20 23:58:15,228 INFO L226 Difference]: Without dead ends: 101356 [2022-07-20 23:58:15,259 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 [2022-07-20 23:58:15,260 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1727 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6677 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 7795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:15,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 732 Invalid, 7795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6677 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-20 23:58:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101356 states. [2022-07-20 23:58:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101356 to 100436. [2022-07-20 23:58:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100436 states, 100435 states have (on average 1.1702095882909345) internal successors, (117530), 100435 states have internal predecessors, (117530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100436 states to 100436 states and 117530 transitions. [2022-07-20 23:58:16,761 INFO L78 Accepts]: Start accepts. Automaton has 100436 states and 117530 transitions. Word has length 349 [2022-07-20 23:58:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:16,763 INFO L495 AbstractCegarLoop]: Abstraction has 100436 states and 117530 transitions. [2022-07-20 23:58:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 100436 states and 117530 transitions. [2022-07-20 23:58:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-07-20 23:58:16,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:16,768 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, 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, 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] [2022-07-20 23:58:16,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 23:58:16,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash -817883493, now seen corresponding path program 1 times [2022-07-20 23:58:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:16,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14505427] [2022-07-20 23:58:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-20 23:58:17,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:17,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14505427] [2022-07-20 23:58:17,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14505427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:17,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:17,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:58:17,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006203436] [2022-07-20 23:58:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:17,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:17,042 INFO L87 Difference]: Start difference. First operand 100436 states and 117530 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:20,341 INFO L93 Difference]: Finished difference Result 189849 states and 223218 transitions. [2022-07-20 23:58:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 358 [2022-07-20 23:58:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:20,486 INFO L225 Difference]: With dead ends: 189849 [2022-07-20 23:58:20,486 INFO L226 Difference]: Without dead ends: 100446 [2022-07-20 23:58:20,531 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 [2022-07-20 23:58:20,532 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:20,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:58:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100446 states. [2022-07-20 23:58:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100446 to 100436. [2022-07-20 23:58:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100436 states, 100435 states have (on average 1.169562403544581) internal successors, (117465), 100435 states have internal predecessors, (117465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100436 states to 100436 states and 117465 transitions. [2022-07-20 23:58:21,835 INFO L78 Accepts]: Start accepts. Automaton has 100436 states and 117465 transitions. Word has length 358 [2022-07-20 23:58:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:21,836 INFO L495 AbstractCegarLoop]: Abstraction has 100436 states and 117465 transitions. [2022-07-20 23:58:21,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 100436 states and 117465 transitions. [2022-07-20 23:58:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-07-20 23:58:21,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:21,860 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, 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, 2, 2, 2, 2, 2, 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] [2022-07-20 23:58:21,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 23:58:21,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash -650269085, now seen corresponding path program 1 times [2022-07-20 23:58:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:21,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763181225] [2022-07-20 23:58:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 286 proven. 113 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-20 23:58:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763181225] [2022-07-20 23:58:22,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763181225] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565964193] [2022-07-20 23:58:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:22,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:22,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:22,412 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) [2022-07-20 23:58:22,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 23:58:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:22,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:22,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-20 23:58:22,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:22,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565964193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:22,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:22,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-20 23:58:22,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388838866] [2022-07-20 23:58:22,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:22,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:22,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:22,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:22,874 INFO L87 Difference]: Start difference. First operand 100436 states and 117465 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:26,086 INFO L93 Difference]: Finished difference Result 200082 states and 234136 transitions. [2022-07-20 23:58:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 387 [2022-07-20 23:58:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:26,289 INFO L225 Difference]: With dead ends: 200082 [2022-07-20 23:58:26,289 INFO L226 Difference]: Without dead ends: 100435 [2022-07-20 23:58:26,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:26,357 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:26,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1446 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 23:58:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100435 states. [2022-07-20 23:58:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100435 to 99646. [2022-07-20 23:58:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99646 states, 99645 states have (on average 1.1240303075919513) internal successors, (112004), 99645 states have internal predecessors, (112004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99646 states to 99646 states and 112004 transitions. [2022-07-20 23:58:27,851 INFO L78 Accepts]: Start accepts. Automaton has 99646 states and 112004 transitions. Word has length 387 [2022-07-20 23:58:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:27,852 INFO L495 AbstractCegarLoop]: Abstraction has 99646 states and 112004 transitions. [2022-07-20 23:58:27,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 99646 states and 112004 transitions. [2022-07-20 23:58:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-07-20 23:58:27,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:27,858 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:27,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:28,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 472745314, now seen corresponding path program 1 times [2022-07-20 23:58:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374635366] [2022-07-20 23:58:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-20 23:58:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:28,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374635366] [2022-07-20 23:58:28,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374635366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:28,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148339230] [2022-07-20 23:58:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:28,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:28,225 INFO L87 Difference]: Start difference. First operand 99646 states and 112004 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:31,933 INFO L93 Difference]: Finished difference Result 226845 states and 257627 transitions. [2022-07-20 23:58:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 417 [2022-07-20 23:58:31,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:32,105 INFO L225 Difference]: With dead ends: 226845 [2022-07-20 23:58:32,105 INFO L226 Difference]: Without dead ends: 127988 [2022-07-20 23:58:32,140 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 [2022-07-20 23:58:32,140 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 888 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:32,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 953 Invalid, 3361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-20 23:58:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127988 states. [2022-07-20 23:58:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127988 to 126394. [2022-07-20 23:58:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126394 states, 126393 states have (on average 1.127467502155974) internal successors, (142504), 126393 states have internal predecessors, (142504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126394 states to 126394 states and 142504 transitions. [2022-07-20 23:58:33,623 INFO L78 Accepts]: Start accepts. Automaton has 126394 states and 142504 transitions. Word has length 417 [2022-07-20 23:58:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:33,624 INFO L495 AbstractCegarLoop]: Abstraction has 126394 states and 142504 transitions. [2022-07-20 23:58:33,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 126394 states and 142504 transitions. [2022-07-20 23:58:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-07-20 23:58:33,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:33,632 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, 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, 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] [2022-07-20 23:58:33,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 23:58:33,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:33,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1828462211, now seen corresponding path program 1 times [2022-07-20 23:58:33,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:33,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726551795] [2022-07-20 23:58:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:33,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-20 23:58:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:33,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726551795] [2022-07-20 23:58:33,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726551795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:33,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:33,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:33,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060755218] [2022-07-20 23:58:33,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:33,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:33,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:33,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:33,971 INFO L87 Difference]: Start difference. First operand 126394 states and 142504 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:37,908 INFO L93 Difference]: Finished difference Result 281133 states and 319664 transitions. [2022-07-20 23:58:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:37,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 455 [2022-07-20 23:58:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:38,118 INFO L225 Difference]: With dead ends: 281133 [2022-07-20 23:58:38,118 INFO L226 Difference]: Without dead ends: 155528 [2022-07-20 23:58:38,173 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 [2022-07-20 23:58:38,173 INFO L413 NwaCegarLoop]: 1787 mSDtfsCounter, 779 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:38,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-20 23:58:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155528 states. [2022-07-20 23:58:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155528 to 153937. [2022-07-20 23:58:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153937 states, 153936 states have (on average 1.1109227211308597) internal successors, (171011), 153936 states have internal predecessors, (171011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153937 states to 153937 states and 171011 transitions. [2022-07-20 23:58:40,282 INFO L78 Accepts]: Start accepts. Automaton has 153937 states and 171011 transitions. Word has length 455 [2022-07-20 23:58:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:40,283 INFO L495 AbstractCegarLoop]: Abstraction has 153937 states and 171011 transitions. [2022-07-20 23:58:40,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 153937 states and 171011 transitions. [2022-07-20 23:58:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-07-20 23:58:40,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:40,309 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, 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, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-20 23:58:40,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 23:58:40,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1773125861, now seen corresponding path program 1 times [2022-07-20 23:58:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:40,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090475202] [2022-07-20 23:58:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:40,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-20 23:58:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:40,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090475202] [2022-07-20 23:58:40,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090475202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:40,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:40,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648919211] [2022-07-20 23:58:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:40,459 INFO L87 Difference]: Start difference. First operand 153937 states and 171011 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:43,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:43,969 INFO L93 Difference]: Finished difference Result 307095 states and 341248 transitions. [2022-07-20 23:58:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:43,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 574 [2022-07-20 23:58:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:44,181 INFO L225 Difference]: With dead ends: 307095 [2022-07-20 23:58:44,181 INFO L226 Difference]: Without dead ends: 153947 [2022-07-20 23:58:44,517 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 [2022-07-20 23:58:44,518 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 936 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:44,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1508 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-20 23:58:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153947 states. [2022-07-20 23:58:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153947 to 153930. [2022-07-20 23:58:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153930 states, 153929 states have (on average 1.0836944305491494) internal successors, (166812), 153929 states have internal predecessors, (166812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153930 states to 153930 states and 166812 transitions. [2022-07-20 23:58:46,511 INFO L78 Accepts]: Start accepts. Automaton has 153930 states and 166812 transitions. Word has length 574 [2022-07-20 23:58:46,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:46,511 INFO L495 AbstractCegarLoop]: Abstraction has 153930 states and 166812 transitions. [2022-07-20 23:58:46,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:46,512 INFO L276 IsEmpty]: Start isEmpty. Operand 153930 states and 166812 transitions. [2022-07-20 23:58:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2022-07-20 23:58:46,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:46,542 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:46,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 23:58:46,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:46,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1574321022, now seen corresponding path program 1 times [2022-07-20 23:58:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:46,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299459945] [2022-07-20 23:58:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-07-20 23:58:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299459945] [2022-07-20 23:58:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299459945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:46,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:46,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959458597] [2022-07-20 23:58:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:46,746 INFO L87 Difference]: Start difference. First operand 153930 states and 166812 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:50,309 INFO L93 Difference]: Finished difference Result 314917 states and 340712 transitions. [2022-07-20 23:58:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:50,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 610 [2022-07-20 23:58:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:50,524 INFO L225 Difference]: With dead ends: 314917 [2022-07-20 23:58:50,524 INFO L226 Difference]: Without dead ends: 158628 [2022-07-20 23:58:50,602 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 [2022-07-20 23:58:50,603 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 1018 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:50,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1625 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-20 23:58:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158628 states. [2022-07-20 23:58:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158628 to 148386. [2022-07-20 23:58:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148386 states, 148385 states have (on average 1.0593523604137884) internal successors, (157192), 148385 states have internal predecessors, (157192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148386 states to 148386 states and 157192 transitions. [2022-07-20 23:58:52,557 INFO L78 Accepts]: Start accepts. Automaton has 148386 states and 157192 transitions. Word has length 610 [2022-07-20 23:58:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:52,558 INFO L495 AbstractCegarLoop]: Abstraction has 148386 states and 157192 transitions. [2022-07-20 23:58:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 148386 states and 157192 transitions. [2022-07-20 23:58:52,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2022-07-20 23:58:52,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:52,577 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:52,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 23:58:52,578 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:52,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash -314230058, now seen corresponding path program 1 times [2022-07-20 23:58:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:52,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266029720] [2022-07-20 23:58:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:52,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-07-20 23:58:53,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:53,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266029720] [2022-07-20 23:58:53,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266029720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:53,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:53,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 23:58:53,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138971375] [2022-07-20 23:58:53,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:53,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 23:58:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:53,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 23:58:53,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:58:53,104 INFO L87 Difference]: Start difference. First operand 148386 states and 157192 transitions. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:58,022 INFO L93 Difference]: Finished difference Result 290455 states and 308527 transitions. [2022-07-20 23:58:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 23:58:58,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 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 615 [2022-07-20 23:58:58,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:58,260 INFO L225 Difference]: With dead ends: 290455 [2022-07-20 23:58:58,260 INFO L226 Difference]: Without dead ends: 157817 [2022-07-20 23:58:58,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:58:58,348 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 3814 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3074 mSolverCounterSat, 2104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3814 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2104 IncrementalHoareTripleChecker+Valid, 3074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:58,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3814 Valid, 371 Invalid, 5178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2104 Valid, 3074 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-20 23:58:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157817 states. [2022-07-20 23:59:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157817 to 157802. [2022-07-20 23:59:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157802 states, 157801 states have (on average 1.0568057236646156) internal successors, (166765), 157801 states have internal predecessors, (166765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157802 states to 157802 states and 166765 transitions. [2022-07-20 23:59:00,515 INFO L78 Accepts]: Start accepts. Automaton has 157802 states and 166765 transitions. Word has length 615 [2022-07-20 23:59:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:00,516 INFO L495 AbstractCegarLoop]: Abstraction has 157802 states and 166765 transitions. [2022-07-20 23:59:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 157802 states and 166765 transitions. [2022-07-20 23:59:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-07-20 23:59:00,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:00,538 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:59:00,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 23:59:00,538 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash -689863392, now seen corresponding path program 1 times [2022-07-20 23:59:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:00,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845001996] [2022-07-20 23:59:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 673 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-20 23:59:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845001996] [2022-07-20 23:59:00,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845001996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:00,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:00,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 23:59:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035686564] [2022-07-20 23:59:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:00,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:59:00,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:59:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:59:00,682 INFO L87 Difference]: Start difference. First operand 157802 states and 166765 transitions. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:07,700 INFO L93 Difference]: Finished difference Result 437004 states and 462392 transitions. [2022-07-20 23:59:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:59:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 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 665 [2022-07-20 23:59:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:08,063 INFO L225 Difference]: With dead ends: 437004 [2022-07-20 23:59:08,063 INFO L226 Difference]: Without dead ends: 279991 [2022-07-20 23:59:08,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:59:08,123 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1707 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 6316 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 7418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 6316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:08,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 911 Invalid, 7418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 6316 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-20 23:59:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279991 states. [2022-07-20 23:59:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279991 to 261736. [2022-07-20 23:59:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261736 states, 261735 states have (on average 1.0524232525264103) internal successors, (275456), 261735 states have internal predecessors, (275456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)