./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label49.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 4dab15ca8d564215247ed99810908aedd9e5c3b287c9c31800ebdafb000d0f0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:12:37,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:12:37,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:12:38,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:12:38,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:12:38,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:12:38,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:12:38,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:12:38,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:12:38,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:12:38,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:12:38,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:12:38,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:12:38,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:12:38,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:12:38,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:12:38,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:12:38,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:12:38,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:12:38,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:12:38,065 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:12:38,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:12:38,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:12:38,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:12:38,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:12:38,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:12:38,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:12:38,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:12:38,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:12:38,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:12:38,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:12:38,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:12:38,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:12:38,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:12:38,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:12:38,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:12:38,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:12:38,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:12:38,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:12:38,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:12:38,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:12:38,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:12:38,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 13:12:38,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:12:38,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:12:38,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:12:38,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:12:38,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:12:38,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:12:38,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:12:38,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:12:38,121 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:12:38,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:12:38,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:12:38,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 13:12:38,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:12:38,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:12:38,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:12:38,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:12:38,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:12:38,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:12:38,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:12:38,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:12:38,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:12:38,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:12:38,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:12:38,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:12:38,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:12:38,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:12:38,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:12:38,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:12:38,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 13:12:38,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 13:12:38,126 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:12:38,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:12:38,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:12:38,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dab15ca8d564215247ed99810908aedd9e5c3b287c9c31800ebdafb000d0f0d [2022-07-22 13:12:38,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:12:38,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:12:38,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:12:38,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:12:38,339 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:12:38,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label49.c [2022-07-22 13:12:38,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2c4bec0/da203b032dfc47649ea67cb515d9b25c/FLAGff9778dca [2022-07-22 13:12:39,209 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:12:39,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label49.c [2022-07-22 13:12:39,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2c4bec0/da203b032dfc47649ea67cb515d9b25c/FLAGff9778dca [2022-07-22 13:12:39,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2c4bec0/da203b032dfc47649ea67cb515d9b25c [2022-07-22 13:12:39,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:12:39,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:12:39,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:12:39,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:12:39,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:12:39,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:12:39" (1/1) ... [2022-07-22 13:12:39,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646fc042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:39, skipping insertion in model container [2022-07-22 13:12:39,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:12:39" (1/1) ... [2022-07-22 13:12:39,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:12:39,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:12:39,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label49.c[5659,5672] [2022-07-22 13:12:40,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:12:40,954 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:12:40,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label49.c[5659,5672] [2022-07-22 13:12:41,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:12:41,654 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:12:41,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41 WrapperNode [2022-07-22 13:12:41,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:12:41,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:12:41,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:12:41,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:12:41,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:41,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:42,623 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-22 13:12:42,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:12:42,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:12:42,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:12:42,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:12:42,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:42,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:42,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:42,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:43,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:43,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:43,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:43,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:12:43,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:12:43,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:12:43,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:12:43,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (1/1) ... [2022-07-22 13:12:43,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:12:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:12:43,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 13:12:43,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 13:12:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:12:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 13:12:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:12:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:12:43,577 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:12:43,578 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:12:49,874 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:12:49,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:12:49,901 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 13:12:49,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:12:49 BoogieIcfgContainer [2022-07-22 13:12:49,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:12:49,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:12:49,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:12:49,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:12:49,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:12:39" (1/3) ... [2022-07-22 13:12:49,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29530a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:12:49, skipping insertion in model container [2022-07-22 13:12:49,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:12:41" (2/3) ... [2022-07-22 13:12:49,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29530a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:12:49, skipping insertion in model container [2022-07-22 13:12:49,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:12:49" (3/3) ... [2022-07-22 13:12:49,916 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label49.c [2022-07-22 13:12:49,928 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:12:49,928 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:12:50,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:12:50,017 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@473deb25, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72234f8 [2022-07-22 13:12:50,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:12:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:12:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 13:12:50,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:12:50,037 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] [2022-07-22 13:12:50,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:12:50,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:12:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1824112922, now seen corresponding path program 1 times [2022-07-22 13:12:50,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:12:50,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172933010] [2022-07-22 13:12:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:12:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:12:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:12:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:12:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:12:50,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172933010] [2022-07-22 13:12:50,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172933010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:12:50,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:12:50,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:12:50,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213512212] [2022-07-22 13:12:50,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:12:50,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:12:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:12:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:12:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:12:50,471 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:03,137 INFO L93 Difference]: Finished difference Result 6335 states and 12139 transitions. [2022-07-22 13:13:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:13:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-07-22 13:13:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:03,174 INFO L225 Difference]: With dead ends: 6335 [2022-07-22 13:13:03,175 INFO L226 Difference]: Without dead ends: 4520 [2022-07-22 13:13:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:13:03,186 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 4269 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11295 mSolverCounterSat, 2250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4269 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 13545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2250 IncrementalHoareTripleChecker+Valid, 11295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:03,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4269 Valid, 2185 Invalid, 13545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2250 Valid, 11295 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-07-22 13:13:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-07-22 13:13:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4469. [2022-07-22 13:13:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.5980304386750224) internal successors, (7140), 4468 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7140 transitions. [2022-07-22 13:13:03,351 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7140 transitions. Word has length 42 [2022-07-22 13:13:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:03,352 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7140 transitions. [2022-07-22 13:13:03,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7140 transitions. [2022-07-22 13:13:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-22 13:13:03,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:03,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:03,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 13:13:03,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash -350196237, now seen corresponding path program 1 times [2022-07-22 13:13:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:03,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226436722] [2022-07-22 13:13:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:13:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:03,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226436722] [2022-07-22 13:13:03,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226436722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:03,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:13:03,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:13:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130177394] [2022-07-22 13:13:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:03,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:13:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:13:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:13:03,742 INFO L87 Difference]: Start difference. First operand 4469 states and 7140 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:10,823 INFO L93 Difference]: Finished difference Result 7602 states and 12932 transitions. [2022-07-22 13:13:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:13:10,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2022-07-22 13:13:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:10,842 INFO L225 Difference]: With dead ends: 7602 [2022-07-22 13:13:10,842 INFO L226 Difference]: Without dead ends: 4469 [2022-07-22 13:13:10,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:13:10,847 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:10,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2113 Invalid, 7335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-22 13:13:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2022-07-22 13:13:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4469. [2022-07-22 13:13:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.596016114592659) internal successors, (7131), 4468 states have internal predecessors, (7131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7131 transitions. [2022-07-22 13:13:10,920 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7131 transitions. Word has length 277 [2022-07-22 13:13:10,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:10,923 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7131 transitions. [2022-07-22 13:13:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7131 transitions. [2022-07-22 13:13:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-07-22 13:13:10,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:10,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:10,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 13:13:10,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:10,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash -695176404, now seen corresponding path program 1 times [2022-07-22 13:13:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:10,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571094405] [2022-07-22 13:13:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:13:11,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:11,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571094405] [2022-07-22 13:13:11,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571094405] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:13:11,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508323627] [2022-07-22 13:13:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:11,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:13:11,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:13:11,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:13:11,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 13:13:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:11,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:13:11,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:13:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 13:13:12,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:13:12,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508323627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:12,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:13:12,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-22 13:13:12,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476941315] [2022-07-22 13:13:12,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:12,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:13:12,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:13:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:13:12,238 INFO L87 Difference]: Start difference. First operand 4469 states and 7131 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:17,561 INFO L93 Difference]: Finished difference Result 10339 states and 18164 transitions. [2022-07-22 13:13:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:13:17,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 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 529 [2022-07-22 13:13:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:17,597 INFO L225 Difference]: With dead ends: 10339 [2022-07-22 13:13:17,597 INFO L226 Difference]: Without dead ends: 7237 [2022-07-22 13:13:17,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:13:17,607 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 1058 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:17,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1387 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-22 13:13:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2022-07-22 13:13:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7236. [2022-07-22 13:13:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.520110573600553) internal successors, (10998), 7235 states have internal predecessors, (10998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10998 transitions. [2022-07-22 13:13:17,750 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10998 transitions. Word has length 529 [2022-07-22 13:13:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:17,751 INFO L495 AbstractCegarLoop]: Abstraction has 7236 states and 10998 transitions. [2022-07-22 13:13:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10998 transitions. [2022-07-22 13:13:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-07-22 13:13:17,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:17,763 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:17,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 13:13:17,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:13:17,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash -362360471, now seen corresponding path program 1 times [2022-07-22 13:13:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:17,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468688543] [2022-07-22 13:13:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 13:13:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468688543] [2022-07-22 13:13:18,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468688543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:18,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:13:18,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:13:18,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649608697] [2022-07-22 13:13:18,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:13:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:13:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:13:18,335 INFO L87 Difference]: Start difference. First operand 7236 states and 10998 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:23,417 INFO L93 Difference]: Finished difference Result 15842 states and 24470 transitions. [2022-07-22 13:13:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:13:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 594 [2022-07-22 13:13:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:23,447 INFO L225 Difference]: With dead ends: 15842 [2022-07-22 13:13:23,447 INFO L226 Difference]: Without dead ends: 9973 [2022-07-22 13:13:23,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:13:23,455 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:23,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 13:13:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2022-07-22 13:13:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2022-07-22 13:13:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.390048154093098) internal successors, (13856), 9968 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13856 transitions. [2022-07-22 13:13:23,615 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13856 transitions. Word has length 594 [2022-07-22 13:13:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:23,616 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 13856 transitions. [2022-07-22 13:13:23,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13856 transitions. [2022-07-22 13:13:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-07-22 13:13:23,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:23,630 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:23,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 13:13:23,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2047602111, now seen corresponding path program 1 times [2022-07-22 13:13:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:23,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875709600] [2022-07-22 13:13:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 13:13:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875709600] [2022-07-22 13:13:23,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875709600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:23,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:13:23,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:13:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310192792] [2022-07-22 13:13:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:23,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:13:23,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:13:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:13:23,920 INFO L87 Difference]: Start difference. First operand 9969 states and 13856 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:29,266 INFO L93 Difference]: Finished difference Result 26951 states and 38550 transitions. [2022-07-22 13:13:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:13:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 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 618 [2022-07-22 13:13:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:29,307 INFO L225 Difference]: With dead ends: 26951 [2022-07-22 13:13:29,307 INFO L226 Difference]: Without dead ends: 18349 [2022-07-22 13:13:29,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:13:29,323 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1361 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:29,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1600 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-22 13:13:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2022-07-22 13:13:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18334. [2022-07-22 13:13:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18334 states, 18333 states have (on average 1.2809687448862705) internal successors, (23484), 18333 states have internal predecessors, (23484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18334 states to 18334 states and 23484 transitions. [2022-07-22 13:13:29,582 INFO L78 Accepts]: Start accepts. Automaton has 18334 states and 23484 transitions. Word has length 618 [2022-07-22 13:13:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:29,583 INFO L495 AbstractCegarLoop]: Abstraction has 18334 states and 23484 transitions. [2022-07-22 13:13:29,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 18334 states and 23484 transitions. [2022-07-22 13:13:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-07-22 13:13:29,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:29,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:29,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 13:13:29,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash 108929792, now seen corresponding path program 1 times [2022-07-22 13:13:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:29,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618419799] [2022-07-22 13:13:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:29,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:13:29,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618419799] [2022-07-22 13:13:29,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618419799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:29,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:13:29,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 13:13:29,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203184505] [2022-07-22 13:13:29,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:29,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 13:13:29,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:29,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 13:13:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:13:29,956 INFO L87 Difference]: Start difference. First operand 18334 states and 23484 transitions. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:37,145 INFO L93 Difference]: Finished difference Result 42164 states and 53383 transitions. [2022-07-22 13:13:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 13:13:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 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 633 [2022-07-22 13:13:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:37,193 INFO L225 Difference]: With dead ends: 42164 [2022-07-22 13:13:37,193 INFO L226 Difference]: Without dead ends: 25171 [2022-07-22 13:13:37,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:13:37,211 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 2256 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 8682 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 9097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 8682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:37,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 1867 Invalid, 9097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 8682 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-22 13:13:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25171 states. [2022-07-22 13:13:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25171 to 25166. [2022-07-22 13:13:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25165 states have (on average 1.2144247963441288) internal successors, (30561), 25165 states have internal predecessors, (30561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 30561 transitions. [2022-07-22 13:13:37,522 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 30561 transitions. Word has length 633 [2022-07-22 13:13:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:37,523 INFO L495 AbstractCegarLoop]: Abstraction has 25166 states and 30561 transitions. [2022-07-22 13:13:37,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 30561 transitions. [2022-07-22 13:13:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2022-07-22 13:13:37,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:37,529 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:37,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 13:13:37,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash 699548916, now seen corresponding path program 1 times [2022-07-22 13:13:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:37,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802577591] [2022-07-22 13:13:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:37,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-22 13:13:37,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:37,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802577591] [2022-07-22 13:13:37,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802577591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:37,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:13:37,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:13:37,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171950495] [2022-07-22 13:13:37,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:37,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:13:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:13:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:13:37,911 INFO L87 Difference]: Start difference. First operand 25166 states and 30561 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:43,531 INFO L93 Difference]: Finished difference Result 47620 states and 60784 transitions. [2022-07-22 13:13:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:13:43,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 678 [2022-07-22 13:13:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:43,577 INFO L225 Difference]: With dead ends: 47620 [2022-07-22 13:13:43,577 INFO L226 Difference]: Without dead ends: 30653 [2022-07-22 13:13:43,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:13:43,600 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1817 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:43,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 772 Invalid, 6034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2017 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 13:13:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30653 states. [2022-07-22 13:13:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30653 to 29281. [2022-07-22 13:13:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29281 states, 29280 states have (on average 1.2540983606557377) internal successors, (36720), 29280 states have internal predecessors, (36720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 36720 transitions. [2022-07-22 13:13:43,950 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 36720 transitions. Word has length 678 [2022-07-22 13:13:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:43,951 INFO L495 AbstractCegarLoop]: Abstraction has 29281 states and 36720 transitions. [2022-07-22 13:13:43,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 36720 transitions. [2022-07-22 13:13:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2022-07-22 13:13:43,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:43,961 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:43,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 13:13:43,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1913122830, now seen corresponding path program 1 times [2022-07-22 13:13:43,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:43,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059652562] [2022-07-22 13:13:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:43,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-22 13:13:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059652562] [2022-07-22 13:13:44,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059652562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:44,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:13:44,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 13:13:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040413154] [2022-07-22 13:13:44,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:13:44,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:13:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:13:44,362 INFO L87 Difference]: Start difference. First operand 29281 states and 36720 transitions. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:13:54,295 INFO L93 Difference]: Finished difference Result 103746 states and 131352 transitions. [2022-07-22 13:13:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 13:13:54,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 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 893 [2022-07-22 13:13:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:13:54,407 INFO L225 Difference]: With dead ends: 103746 [2022-07-22 13:13:54,408 INFO L226 Difference]: Without dead ends: 75832 [2022-07-22 13:13:54,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:13:54,449 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3322 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 9232 mSolverCounterSat, 2672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 11904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2672 IncrementalHoareTripleChecker+Valid, 9232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-22 13:13:54,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3322 Valid, 1115 Invalid, 11904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2672 Valid, 9232 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-22 13:13:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75832 states. [2022-07-22 13:13:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75832 to 74393. [2022-07-22 13:13:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74393 states, 74392 states have (on average 1.1997929884933864) internal successors, (89255), 74392 states have internal predecessors, (89255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74393 states to 74393 states and 89255 transitions. [2022-07-22 13:13:55,287 INFO L78 Accepts]: Start accepts. Automaton has 74393 states and 89255 transitions. Word has length 893 [2022-07-22 13:13:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:13:55,288 INFO L495 AbstractCegarLoop]: Abstraction has 74393 states and 89255 transitions. [2022-07-22 13:13:55,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:13:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 74393 states and 89255 transitions. [2022-07-22 13:13:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-07-22 13:13:55,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:13:55,300 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:13:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 13:13:55,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:13:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:13:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1680144238, now seen corresponding path program 1 times [2022-07-22 13:13:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:13:55,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805474132] [2022-07-22 13:13:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:55,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:13:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 398 proven. 313 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 13:13:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:13:56,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805474132] [2022-07-22 13:13:56,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805474132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:13:56,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994359717] [2022-07-22 13:13:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:13:56,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:13:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:13:56,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:13:56,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 13:13:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:13:56,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:13:56,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:13:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-22 13:13:56,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:13:56,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994359717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:13:56,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:13:56,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 13:13:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673892388] [2022-07-22 13:13:56,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:13:56,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:13:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:13:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:13:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 13:13:56,892 INFO L87 Difference]: Start difference. First operand 74393 states and 89255 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:14:02,333 INFO L93 Difference]: Finished difference Result 152879 states and 186659 transitions. [2022-07-22 13:14:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:14:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 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 902 [2022-07-22 13:14:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:14:02,441 INFO L225 Difference]: With dead ends: 152879 [2022-07-22 13:14:02,442 INFO L226 Difference]: Without dead ends: 92145 [2022-07-22 13:14:02,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 13:14:02,472 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1663 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4657 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 4657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:14:02,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 764 Invalid, 5665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 4657 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 13:14:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92145 states. [2022-07-22 13:14:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92145 to 90775. [2022-07-22 13:14:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90775 states, 90774 states have (on average 1.1880824905810035) internal successors, (107847), 90774 states have internal predecessors, (107847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90775 states to 90775 states and 107847 transitions. [2022-07-22 13:14:03,417 INFO L78 Accepts]: Start accepts. Automaton has 90775 states and 107847 transitions. Word has length 902 [2022-07-22 13:14:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:14:03,418 INFO L495 AbstractCegarLoop]: Abstraction has 90775 states and 107847 transitions. [2022-07-22 13:14:03,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 90775 states and 107847 transitions. [2022-07-22 13:14:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-07-22 13:14:03,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:14:03,428 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:14:03,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 13:14:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 13:14:03,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:14:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:14:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2109439225, now seen corresponding path program 1 times [2022-07-22 13:14:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:14:03,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972061870] [2022-07-22 13:14:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:14:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 289 proven. 366 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 13:14:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:14:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972061870] [2022-07-22 13:14:04,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972061870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:14:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290635239] [2022-07-22 13:14:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:04,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:14:04,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:14:04,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:14:04,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 13:14:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:04,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:14:04,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:14:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-22 13:14:04,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:14:04,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290635239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:14:04,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:14:04,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 13:14:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000765365] [2022-07-22 13:14:04,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:14:04,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:14:04,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:14:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:14:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:14:04,871 INFO L87 Difference]: Start difference. First operand 90775 states and 107847 transitions. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:14:10,960 INFO L93 Difference]: Finished difference Result 219886 states and 262083 transitions. [2022-07-22 13:14:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:14:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 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 902 [2022-07-22 13:14:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:14:11,107 INFO L225 Difference]: With dead ends: 219886 [2022-07-22 13:14:11,107 INFO L226 Difference]: Without dead ends: 130478 [2022-07-22 13:14:11,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:14:11,142 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1560 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 5963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 13:14:11,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 1428 Invalid, 5963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 13:14:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130478 states. [2022-07-22 13:14:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130478 to 129006. [2022-07-22 13:14:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129006 states, 129005 states have (on average 1.1510561606139298) internal successors, (148492), 129005 states have internal predecessors, (148492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129006 states to 129006 states and 148492 transitions. [2022-07-22 13:14:12,848 INFO L78 Accepts]: Start accepts. Automaton has 129006 states and 148492 transitions. Word has length 902 [2022-07-22 13:14:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:14:12,849 INFO L495 AbstractCegarLoop]: Abstraction has 129006 states and 148492 transitions. [2022-07-22 13:14:12,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 129006 states and 148492 transitions. [2022-07-22 13:14:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2022-07-22 13:14:12,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:14:12,879 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:14:12,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 13:14:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:14:13,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:14:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:14:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash -883627158, now seen corresponding path program 1 times [2022-07-22 13:14:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:14:13,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617429018] [2022-07-22 13:14:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:14:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 646 proven. 129 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-07-22 13:14:13,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:14:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617429018] [2022-07-22 13:14:13,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617429018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:14:13,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599655561] [2022-07-22 13:14:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:13,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:14:13,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:14:13,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:14:13,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 13:14:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:13,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 13:14:13,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:14:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-22 13:14:14,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:14:14,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599655561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:14:14,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:14:14,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-22 13:14:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743936867] [2022-07-22 13:14:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:14:14,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:14:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:14:14,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:14:14,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:14:14,377 INFO L87 Difference]: Start difference. First operand 129006 states and 148492 transitions. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:14:20,728 INFO L93 Difference]: Finished difference Result 337165 states and 393118 transitions. [2022-07-22 13:14:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:14:20,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 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 1018 [2022-07-22 13:14:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:14:21,192 INFO L225 Difference]: With dead ends: 337165 [2022-07-22 13:14:21,192 INFO L226 Difference]: Without dead ends: 225912 [2022-07-22 13:14:21,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:14:21,252 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2378 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 5505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 13:14:21,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 795 Invalid, 5505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 13:14:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225912 states. [2022-07-22 13:14:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225912 to 199975. [2022-07-22 13:14:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199975 states, 199974 states have (on average 1.1530548971366277) internal successors, (230581), 199974 states have internal predecessors, (230581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199975 states to 199975 states and 230581 transitions. [2022-07-22 13:14:23,841 INFO L78 Accepts]: Start accepts. Automaton has 199975 states and 230581 transitions. Word has length 1018 [2022-07-22 13:14:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:14:23,842 INFO L495 AbstractCegarLoop]: Abstraction has 199975 states and 230581 transitions. [2022-07-22 13:14:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 199975 states and 230581 transitions. [2022-07-22 13:14:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2022-07-22 13:14:23,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:14:23,854 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:14:23,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 13:14:24,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:14:24,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:14:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:14:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash 981094297, now seen corresponding path program 1 times [2022-07-22 13:14:24,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:14:24,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063784503] [2022-07-22 13:14:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:24,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:14:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 863 proven. 66 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-22 13:14:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:14:24,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063784503] [2022-07-22 13:14:24,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063784503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 13:14:24,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126112883] [2022-07-22 13:14:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:24,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 13:14:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:14:24,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 13:14:24,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 13:14:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:24,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 13:14:24,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:14:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-07-22 13:14:25,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:14:25,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126112883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:14:25,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 13:14:25,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 13:14:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786505001] [2022-07-22 13:14:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:14:25,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:14:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:14:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:14:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:14:25,123 INFO L87 Difference]: Start difference. First operand 199975 states and 230581 transitions. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:14:32,017 INFO L93 Difference]: Finished difference Result 398664 states and 459936 transitions. [2022-07-22 13:14:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:14:32,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 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 1057 [2022-07-22 13:14:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:14:32,313 INFO L225 Difference]: With dead ends: 398664 [2022-07-22 13:14:32,313 INFO L226 Difference]: Without dead ends: 201421 [2022-07-22 13:14:32,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 13:14:32,419 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1382 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-22 13:14:32,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1841 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-22 13:14:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201421 states. [2022-07-22 13:14:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201421 to 201343. [2022-07-22 13:14:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201343 states, 201342 states have (on average 1.138306960296411) internal successors, (229189), 201342 states have internal predecessors, (229189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201343 states to 201343 states and 229189 transitions. [2022-07-22 13:14:34,794 INFO L78 Accepts]: Start accepts. Automaton has 201343 states and 229189 transitions. Word has length 1057 [2022-07-22 13:14:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:14:34,794 INFO L495 AbstractCegarLoop]: Abstraction has 201343 states and 229189 transitions. [2022-07-22 13:14:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 201343 states and 229189 transitions. [2022-07-22 13:14:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2022-07-22 13:14:34,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:14:34,807 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:14:34,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 13:14:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 13:14:35,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:14:35,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:14:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 735657204, now seen corresponding path program 1 times [2022-07-22 13:14:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:14:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094350561] [2022-07-22 13:14:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:14:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-07-22 13:14:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:14:35,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094350561] [2022-07-22 13:14:35,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094350561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:14:35,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:14:35,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:14:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120927287] [2022-07-22 13:14:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:14:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:14:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:14:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:14:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:14:35,826 INFO L87 Difference]: Start difference. First operand 201343 states and 229189 transitions. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:14:41,834 INFO L93 Difference]: Finished difference Result 408144 states and 463983 transitions. [2022-07-22 13:14:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:14:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 1069 [2022-07-22 13:14:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:14:42,141 INFO L225 Difference]: With dead ends: 408144 [2022-07-22 13:14:42,142 INFO L226 Difference]: Without dead ends: 204071 [2022-07-22 13:14:42,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:14:42,250 INFO L413 NwaCegarLoop]: 2867 mSDtfsCounter, 1471 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-22 13:14:42,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 3046 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1255 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-22 13:14:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204071 states. [2022-07-22 13:14:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204071 to 199971. [2022-07-22 13:14:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199971 states, 199970 states have (on average 1.1108316247437116) internal successors, (222133), 199970 states have internal predecessors, (222133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199971 states to 199971 states and 222133 transitions. [2022-07-22 13:14:45,049 INFO L78 Accepts]: Start accepts. Automaton has 199971 states and 222133 transitions. Word has length 1069 [2022-07-22 13:14:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:14:45,050 INFO L495 AbstractCegarLoop]: Abstraction has 199971 states and 222133 transitions. [2022-07-22 13:14:45,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:45,050 INFO L276 IsEmpty]: Start isEmpty. Operand 199971 states and 222133 transitions. [2022-07-22 13:14:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2022-07-22 13:14:45,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:14:45,067 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:14:45,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 13:14:45,070 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:14:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:14:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1799774254, now seen corresponding path program 1 times [2022-07-22 13:14:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:14:45,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278510262] [2022-07-22 13:14:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:14:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 1033 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-22 13:14:45,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:14:45,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278510262] [2022-07-22 13:14:45,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278510262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:14:45,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:14:45,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 13:14:45,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351173670] [2022-07-22 13:14:45,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:14:45,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 13:14:45,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:14:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 13:14:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:14:45,620 INFO L87 Difference]: Start difference. First operand 199971 states and 222133 transitions. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:14:52,619 INFO L93 Difference]: Finished difference Result 438233 states and 491363 transitions. [2022-07-22 13:14:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 13:14:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 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 1100 [2022-07-22 13:14:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:14:52,931 INFO L225 Difference]: With dead ends: 438233 [2022-07-22 13:14:52,931 INFO L226 Difference]: Without dead ends: 254650 [2022-07-22 13:14:52,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 13:14:53,000 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1582 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4244 mSolverCounterSat, 2078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 6322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2078 IncrementalHoareTripleChecker+Valid, 4244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-22 13:14:53,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 804 Invalid, 6322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2078 Valid, 4244 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-22 13:14:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254650 states. [2022-07-22 13:14:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254650 to 242279. [2022-07-22 13:14:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242279 states, 242278 states have (on average 1.1248895896449533) internal successors, (272536), 242278 states have internal predecessors, (272536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242279 states to 242279 states and 272536 transitions. [2022-07-22 13:14:56,336 INFO L78 Accepts]: Start accepts. Automaton has 242279 states and 272536 transitions. Word has length 1100 [2022-07-22 13:14:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:14:56,336 INFO L495 AbstractCegarLoop]: Abstraction has 242279 states and 272536 transitions. [2022-07-22 13:14:56,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:14:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 242279 states and 272536 transitions. [2022-07-22 13:14:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2022-07-22 13:14:56,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:14:56,351 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:14:56,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 13:14:56,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:14:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:14:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash -179232052, now seen corresponding path program 1 times [2022-07-22 13:14:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:14:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448500396] [2022-07-22 13:14:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:14:56,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:14:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:14:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 1079 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2022-07-22 13:14:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:14:56,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448500396] [2022-07-22 13:14:56,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448500396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:14:56,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:14:56,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 13:14:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045567800] [2022-07-22 13:14:56,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:14:56,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 13:14:56,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:14:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 13:14:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 13:14:56,708 INFO L87 Difference]: Start difference. First operand 242279 states and 272536 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)