./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label50.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 c0a29c0650858169a7f06788e2d55d3441e7b25ce879ddd70ee1db162c004af4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:57:40,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:57:40,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:57:40,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:57:40,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:57:40,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:57:40,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:57:40,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:57:40,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:57:40,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:57:40,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:57:40,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:57:40,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:57:40,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:57:40,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:57:40,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:57:40,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:57:40,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:57:40,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:57:40,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:57:40,064 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:57:40,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:57:40,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:57:40,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:57:40,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:57:40,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:57:40,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:57:40,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:57:40,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:57:40,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:57:40,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:57:40,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:57:40,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:57:40,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:57:40,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:57:40,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:57:40,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:57:40,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:57:40,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:57:40,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:57:40,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:57:40,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:57:40,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:57:40,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:57:40,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:57:40,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:57:40,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:57:40,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:57:40,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:57:40,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:57:40,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:57:40,108 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:57:40,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:57:40,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:57:40,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:57:40,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:57:40,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:57:40,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:57:40,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:57:40,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:57:40,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:57:40,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:57:40,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:57:40,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:57:40,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:57:40,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:57:40,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:57:40,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:57:40,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:57:40,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:57:40,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:57:40,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:57:40,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:57:40,112 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:57:40,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:57:40,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:57:40,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0a29c0650858169a7f06788e2d55d3441e7b25ce879ddd70ee1db162c004af4 [2022-07-13 12:57:40,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:57:40,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:57:40,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:57:40,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:57:40,313 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:57:40,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label50.c [2022-07-13 12:57:40,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba9e55d0/1915c796610a454daad840f8ef479c7a/FLAG3c1d9a78e [2022-07-13 12:57:40,960 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:57:40,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label50.c [2022-07-13 12:57:40,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba9e55d0/1915c796610a454daad840f8ef479c7a/FLAG3c1d9a78e [2022-07-13 12:57:41,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba9e55d0/1915c796610a454daad840f8ef479c7a [2022-07-13 12:57:41,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:57:41,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:57:41,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:57:41,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:57:41,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:57:41,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:57:41" (1/1) ... [2022-07-13 12:57:41,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ec7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:41, skipping insertion in model container [2022-07-13 12:57:41,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:57:41" (1/1) ... [2022-07-13 12:57:41,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:57:41,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:57:41,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label50.c[8814,8827] [2022-07-13 12:57:42,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:57:42,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:57:42,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label50.c[8814,8827] [2022-07-13 12:57:42,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:57:42,659 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:57:42,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42 WrapperNode [2022-07-13 12:57:42,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:57:42,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:57:42,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:57:42,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:57:42,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:42,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,183 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-13 12:57:43,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:57:43,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:57:43,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:57:43,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:57:43,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:57:43,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:57:43,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:57:43,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:57:43,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (1/1) ... [2022-07-13 12:57:43,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:57:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:57:43,582 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) [2022-07-13 12:57:43,650 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 [2022-07-13 12:57:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:57:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:57:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:57:43,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:57:43,771 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:57:43,772 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:57:47,161 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:57:47,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:57:47,171 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:57:47,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:57:47 BoogieIcfgContainer [2022-07-13 12:57:47,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:57:47,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:57:47,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:57:47,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:57:47,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:57:41" (1/3) ... [2022-07-13 12:57:47,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf1cc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:57:47, skipping insertion in model container [2022-07-13 12:57:47,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:57:42" (2/3) ... [2022-07-13 12:57:47,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf1cc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:57:47, skipping insertion in model container [2022-07-13 12:57:47,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:57:47" (3/3) ... [2022-07-13 12:57:47,178 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label50.c [2022-07-13 12:57:47,188 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:57:47,188 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:57:47,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:57:47,231 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@1c1b3848, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@327719c2 [2022-07-13 12:57:47,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:57:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 12:57:47,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:47,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:47,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2022-07-13 12:57:47,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:47,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463674559] [2022-07-13 12:57:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:57:47,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:47,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463674559] [2022-07-13 12:57:47,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463674559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:47,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:47,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006981159] [2022-07-13 12:57:47,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:47,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:57:47,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:47,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:57:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:57:47,545 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:52,840 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-07-13 12:57:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:57:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-13 12:57:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:52,860 INFO L225 Difference]: With dead ends: 3829 [2022-07-13 12:57:52,861 INFO L226 Difference]: Without dead ends: 2664 [2022-07-13 12:57:52,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:57:52,868 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2666 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:52,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 12:57:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-07-13 12:57:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-07-13 12:57:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-07-13 12:57:52,977 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 62 [2022-07-13 12:57:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:52,978 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-07-13 12:57:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-07-13 12:57:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-13 12:57:52,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:52,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 12:57:52,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:57:52,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash 354009653, now seen corresponding path program 1 times [2022-07-13 12:57:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:52,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672230035] [2022-07-13 12:57:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:57:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:53,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672230035] [2022-07-13 12:57:53,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672230035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:53,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:53,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764681172] [2022-07-13 12:57:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:53,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:57:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:57:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:57:53,161 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:58,540 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-07-13 12:57:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:57:58,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2022-07-13 12:57:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:58,560 INFO L225 Difference]: With dead ends: 7864 [2022-07-13 12:57:58,561 INFO L226 Difference]: Without dead ends: 5990 [2022-07-13 12:57:58,567 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 [2022-07-13 12:57:58,568 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1617 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:58,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-13 12:57:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-07-13 12:57:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-07-13 12:57:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-07-13 12:57:58,672 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 187 [2022-07-13 12:57:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:58,673 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-07-13 12:57:58,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-07-13 12:57:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-13 12:57:58,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:58,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:58,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 12:57:58,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash 747152322, now seen corresponding path program 1 times [2022-07-13 12:57:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:58,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024871986] [2022-07-13 12:57:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-13 12:57:58,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:58,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024871986] [2022-07-13 12:57:58,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024871986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:58,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:58,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:57:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686644664] [2022-07-13 12:57:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:58,834 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:01,678 INFO L93 Difference]: Finished difference Result 15687 states and 23390 transitions. [2022-07-13 12:58:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 229 [2022-07-13 12:58:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:01,704 INFO L225 Difference]: With dead ends: 15687 [2022-07-13 12:58:01,705 INFO L226 Difference]: Without dead ends: 10617 [2022-07-13 12:58:01,710 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 [2022-07-13 12:58:01,710 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:01,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:58:01,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-07-13 12:58:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-07-13 12:58:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-07-13 12:58:01,843 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 229 [2022-07-13 12:58:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:01,844 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-07-13 12:58:01,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-07-13 12:58:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-13 12:58:01,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:01,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:01,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:58:01,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1134775617, now seen corresponding path program 1 times [2022-07-13 12:58:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:01,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280104266] [2022-07-13 12:58:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 12:58:01,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:01,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280104266] [2022-07-13 12:58:01,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280104266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:01,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:01,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:58:01,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204248498] [2022-07-13 12:58:01,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:01,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:01,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:01,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:02,000 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:04,895 INFO L93 Difference]: Finished difference Result 28351 states and 39240 transitions. [2022-07-13 12:58:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:04,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 243 [2022-07-13 12:58:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:04,948 INFO L225 Difference]: With dead ends: 28351 [2022-07-13 12:58:04,948 INFO L226 Difference]: Without dead ends: 18532 [2022-07-13 12:58:04,961 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 [2022-07-13 12:58:04,962 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:04,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:58:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2022-07-13 12:58:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2022-07-13 12:58:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3251268761472843) internal successors, (24544), 18522 states have internal predecessors, (24544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24544 transitions. [2022-07-13 12:58:05,210 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24544 transitions. Word has length 243 [2022-07-13 12:58:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:05,210 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24544 transitions. [2022-07-13 12:58:05,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24544 transitions. [2022-07-13 12:58:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-13 12:58:05,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:05,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:05,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 12:58:05,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:05,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash -251504526, now seen corresponding path program 1 times [2022-07-13 12:58:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:05,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583498633] [2022-07-13 12:58:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:58:05,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:05,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583498633] [2022-07-13 12:58:05,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583498633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:05,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:05,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:58:05,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198809881] [2022-07-13 12:58:05,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:05,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:05,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:05,308 INFO L87 Difference]: Start difference. First operand 18523 states and 24544 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:08,225 INFO L93 Difference]: Finished difference Result 52015 states and 69799 transitions. [2022-07-13 12:58:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2022-07-13 12:58:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:08,277 INFO L225 Difference]: With dead ends: 52015 [2022-07-13 12:58:08,278 INFO L226 Difference]: Without dead ends: 34281 [2022-07-13 12:58:08,296 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 [2022-07-13 12:58:08,298 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 851 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:08,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 952 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:58:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2022-07-13 12:58:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2022-07-13 12:58:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.2549168368835717) internal successors, (43006), 34270 states have internal predecessors, (43006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43006 transitions. [2022-07-13 12:58:08,717 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43006 transitions. Word has length 261 [2022-07-13 12:58:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:08,718 INFO L495 AbstractCegarLoop]: Abstraction has 34271 states and 43006 transitions. [2022-07-13 12:58:08,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43006 transitions. [2022-07-13 12:58:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-13 12:58:08,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:08,724 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 12:58:08,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash -341439997, now seen corresponding path program 1 times [2022-07-13 12:58:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:08,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506461211] [2022-07-13 12:58:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 12:58:08,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:08,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506461211] [2022-07-13 12:58:08,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506461211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:08,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:08,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:58:08,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591101633] [2022-07-13 12:58:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:08,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:08,833 INFO L87 Difference]: Start difference. First operand 34271 states and 43006 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:11,719 INFO L93 Difference]: Finished difference Result 92929 states and 117608 transitions. [2022-07-13 12:58:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 292 [2022-07-13 12:58:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:11,807 INFO L225 Difference]: With dead ends: 92929 [2022-07-13 12:58:11,807 INFO L226 Difference]: Without dead ends: 59447 [2022-07-13 12:58:11,839 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 [2022-07-13 12:58:11,841 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:11,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:58:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2022-07-13 12:58:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 56294. [2022-07-13 12:58:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56294 states, 56293 states have (on average 1.2005045032242019) internal successors, (67580), 56293 states have internal predecessors, (67580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56294 states to 56294 states and 67580 transitions. [2022-07-13 12:58:12,399 INFO L78 Accepts]: Start accepts. Automaton has 56294 states and 67580 transitions. Word has length 292 [2022-07-13 12:58:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:12,399 INFO L495 AbstractCegarLoop]: Abstraction has 56294 states and 67580 transitions. [2022-07-13 12:58:12,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 56294 states and 67580 transitions. [2022-07-13 12:58:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-07-13 12:58:12,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:12,405 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:58:12,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1187004232, now seen corresponding path program 1 times [2022-07-13 12:58:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030111987] [2022-07-13 12:58:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-13 12:58:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:12,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030111987] [2022-07-13 12:58:12,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030111987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:12,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:12,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:58:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396984471] [2022-07-13 12:58:12,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:12,596 INFO L87 Difference]: Start difference. First operand 56294 states and 67580 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:15,850 INFO L93 Difference]: Finished difference Result 133057 states and 162012 transitions. [2022-07-13 12:58:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 350 [2022-07-13 12:58:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:15,965 INFO L225 Difference]: With dead ends: 133057 [2022-07-13 12:58:15,966 INFO L226 Difference]: Without dead ends: 77552 [2022-07-13 12:58:16,011 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 [2022-07-13 12:58:16,012 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 808 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:16,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1947 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:58:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77552 states. [2022-07-13 12:58:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77552 to 76759. [2022-07-13 12:58:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76759 states, 76758 states have (on average 1.1668099742046432) internal successors, (89562), 76758 states have internal predecessors, (89562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76759 states to 76759 states and 89562 transitions. [2022-07-13 12:58:16,902 INFO L78 Accepts]: Start accepts. Automaton has 76759 states and 89562 transitions. Word has length 350 [2022-07-13 12:58:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:16,902 INFO L495 AbstractCegarLoop]: Abstraction has 76759 states and 89562 transitions. [2022-07-13 12:58:16,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 76759 states and 89562 transitions. [2022-07-13 12:58:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-07-13 12:58:16,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:16,909 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:16,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:58:16,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1602599278, now seen corresponding path program 1 times [2022-07-13 12:58:16,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:16,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051638220] [2022-07-13 12:58:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:16,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 12:58:17,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:17,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051638220] [2022-07-13 12:58:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051638220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:17,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:17,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:58:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755029274] [2022-07-13 12:58:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:17,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:58:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:58:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:58:17,197 INFO L87 Difference]: Start difference. First operand 76759 states and 89562 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:23,387 INFO L93 Difference]: Finished difference Result 205688 states and 241921 transitions. [2022-07-13 12:58:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:58:23,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 359 [2022-07-13 12:58:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:23,563 INFO L225 Difference]: With dead ends: 205688 [2022-07-13 12:58:23,563 INFO L226 Difference]: Without dead ends: 129718 [2022-07-13 12:58:23,601 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 [2022-07-13 12:58:23,602 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1736 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6653 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 7786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 6653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:23,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 707 Invalid, 7786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 6653 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-13 12:58:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129718 states. [2022-07-13 12:58:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129718 to 128793. [2022-07-13 12:58:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128793 states, 128792 states have (on average 1.162339275731412) internal successors, (149700), 128792 states have internal predecessors, (149700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128793 states to 128793 states and 149700 transitions. [2022-07-13 12:58:25,286 INFO L78 Accepts]: Start accepts. Automaton has 128793 states and 149700 transitions. Word has length 359 [2022-07-13 12:58:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:25,287 INFO L495 AbstractCegarLoop]: Abstraction has 128793 states and 149700 transitions. [2022-07-13 12:58:25,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 128793 states and 149700 transitions. [2022-07-13 12:58:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-07-13 12:58:25,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:25,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:25,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:58:25,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1513951045, now seen corresponding path program 1 times [2022-07-13 12:58:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:25,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897592036] [2022-07-13 12:58:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-13 12:58:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:25,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897592036] [2022-07-13 12:58:25,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897592036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:25,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:25,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:58:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238513901] [2022-07-13 12:58:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:25,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:25,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:25,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:25,445 INFO L87 Difference]: Start difference. First operand 128793 states and 149700 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:28,675 INFO L93 Difference]: Finished difference Result 240271 states and 281024 transitions. [2022-07-13 12:58:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:28,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2022-07-13 12:58:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:29,005 INFO L225 Difference]: With dead ends: 240271 [2022-07-13 12:58:29,005 INFO L226 Difference]: Without dead ends: 128806 [2022-07-13 12:58:29,039 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 [2022-07-13 12:58:29,041 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:29,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1199 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:58:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128806 states. [2022-07-13 12:58:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128806 to 128006. [2022-07-13 12:58:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128006 states, 128005 states have (on average 1.1624389672278426) internal successors, (148798), 128005 states have internal predecessors, (148798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128006 states to 128006 states and 148798 transitions. [2022-07-13 12:58:30,339 INFO L78 Accepts]: Start accepts. Automaton has 128006 states and 148798 transitions. Word has length 359 [2022-07-13 12:58:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:30,340 INFO L495 AbstractCegarLoop]: Abstraction has 128006 states and 148798 transitions. [2022-07-13 12:58:30,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 128006 states and 148798 transitions. [2022-07-13 12:58:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-13 12:58:30,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:30,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:30,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 12:58:30,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash 558961745, now seen corresponding path program 1 times [2022-07-13 12:58:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:30,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073583751] [2022-07-13 12:58:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 288 proven. 113 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 12:58:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073583751] [2022-07-13 12:58:30,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073583751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:58:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906751828] [2022-07-13 12:58:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:30,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:58:30,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:58:30,858 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) [2022-07-13 12:58:30,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 12:58:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:30,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:58:31,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:58:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-13 12:58:31,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:58:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906751828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:31,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:58:31,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:58:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594153870] [2022-07-13 12:58:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:58:31,179 INFO L87 Difference]: Start difference. First operand 128006 states and 148798 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:34,312 INFO L93 Difference]: Finished difference Result 254434 states and 295649 transitions. [2022-07-13 12:58:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2022-07-13 12:58:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:34,458 INFO L225 Difference]: With dead ends: 254434 [2022-07-13 12:58:34,458 INFO L226 Difference]: Without dead ends: 127217 [2022-07-13 12:58:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:58:34,508 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:34,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1444 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:58:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127217 states. [2022-07-13 12:58:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127217 to 127216. [2022-07-13 12:58:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127216 states, 127215 states have (on average 1.1196792831034077) internal successors, (142440), 127215 states have internal predecessors, (142440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127216 states to 127216 states and 142440 transitions. [2022-07-13 12:58:36,076 INFO L78 Accepts]: Start accepts. Automaton has 127216 states and 142440 transitions. Word has length 388 [2022-07-13 12:58:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:36,076 INFO L495 AbstractCegarLoop]: Abstraction has 127216 states and 142440 transitions. [2022-07-13 12:58:36,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 127216 states and 142440 transitions. [2022-07-13 12:58:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-07-13 12:58:36,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:36,086 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:36,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 12:58:36,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 12:58:36,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash -684842412, now seen corresponding path program 1 times [2022-07-13 12:58:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:36,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564048680] [2022-07-13 12:58:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-13 12:58:36,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:36,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564048680] [2022-07-13 12:58:36,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564048680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:36,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:36,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:58:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213433109] [2022-07-13 12:58:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:36,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:36,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:36,405 INFO L87 Difference]: Start difference. First operand 127216 states and 142440 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:39,973 INFO L93 Difference]: Finished difference Result 279629 states and 316499 transitions. [2022-07-13 12:58:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 456 [2022-07-13 12:58:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:40,302 INFO L225 Difference]: With dead ends: 279629 [2022-07-13 12:58:40,302 INFO L226 Difference]: Without dead ends: 153202 [2022-07-13 12:58:40,333 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 [2022-07-13 12:58:40,334 INFO L413 NwaCegarLoop]: 1759 mSDtfsCounter, 787 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:40,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1913 Invalid, 3248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:58:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153202 states. [2022-07-13 12:58:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153202 to 150820. [2022-07-13 12:58:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150820 states, 150819 states have (on average 1.1036474184287126) internal successors, (166451), 150819 states have internal predecessors, (166451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150820 states to 150820 states and 166451 transitions. [2022-07-13 12:58:41,874 INFO L78 Accepts]: Start accepts. Automaton has 150820 states and 166451 transitions. Word has length 456 [2022-07-13 12:58:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:41,874 INFO L495 AbstractCegarLoop]: Abstraction has 150820 states and 166451 transitions. [2022-07-13 12:58:41,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 150820 states and 166451 transitions. [2022-07-13 12:58:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-07-13 12:58:41,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:41,884 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:41,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 12:58:41,885 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1115352886, now seen corresponding path program 1 times [2022-07-13 12:58:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:41,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259085379] [2022-07-13 12:58:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-13 12:58:42,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:42,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259085379] [2022-07-13 12:58:42,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259085379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:42,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:42,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:58:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556570070] [2022-07-13 12:58:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:42,283 INFO L87 Difference]: Start difference. First operand 150820 states and 166451 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:46,455 INFO L93 Difference]: Finished difference Result 365544 states and 404234 transitions. [2022-07-13 12:58:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 466 [2022-07-13 12:58:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:46,985 INFO L225 Difference]: With dead ends: 365544 [2022-07-13 12:58:46,986 INFO L226 Difference]: Without dead ends: 215513 [2022-07-13 12:58:47,011 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 [2022-07-13 12:58:47,011 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 962 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:47,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 580 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 12:58:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215513 states. [2022-07-13 12:58:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215513 to 214616. [2022-07-13 12:58:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214616 states, 214615 states have (on average 1.1051184679542436) internal successors, (237175), 214615 states have internal predecessors, (237175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214616 states to 214616 states and 237175 transitions. [2022-07-13 12:58:49,621 INFO L78 Accepts]: Start accepts. Automaton has 214616 states and 237175 transitions. Word has length 466 [2022-07-13 12:58:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:49,621 INFO L495 AbstractCegarLoop]: Abstraction has 214616 states and 237175 transitions. [2022-07-13 12:58:49,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 214616 states and 237175 transitions. [2022-07-13 12:58:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-07-13 12:58:49,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:49,633 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 12:58:49,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -339615217, now seen corresponding path program 1 times [2022-07-13 12:58:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65499730] [2022-07-13 12:58:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 360 proven. 110 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 12:58:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:49,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65499730] [2022-07-13 12:58:49,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65499730] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:58:49,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618510697] [2022-07-13 12:58:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:49,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:58:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:58:49,852 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) [2022-07-13 12:58:49,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 12:58:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:49,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 12:58:49,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:58:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-13 12:58:50,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:58:50,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618510697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:50,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:58:50,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-13 12:58:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572442554] [2022-07-13 12:58:50,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:50,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:50,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 12:58:50,031 INFO L87 Difference]: Start difference. First operand 214616 states and 237175 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:58:54,462 INFO L93 Difference]: Finished difference Result 463052 states and 513272 transitions. [2022-07-13 12:58:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:58:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 478 [2022-07-13 12:58:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:58:54,814 INFO L225 Difference]: With dead ends: 463052 [2022-07-13 12:58:54,814 INFO L226 Difference]: Without dead ends: 267336 [2022-07-13 12:58:54,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 12:58:54,922 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 937 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:58:54,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1762 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 12:58:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267336 states. [2022-07-13 12:58:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267336 to 246068. [2022-07-13 12:58:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246068 states, 246067 states have (on average 1.0949660051937073) internal successors, (269435), 246067 states have internal predecessors, (269435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246068 states to 246068 states and 269435 transitions. [2022-07-13 12:58:58,387 INFO L78 Accepts]: Start accepts. Automaton has 246068 states and 269435 transitions. Word has length 478 [2022-07-13 12:58:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:58:58,388 INFO L495 AbstractCegarLoop]: Abstraction has 246068 states and 269435 transitions. [2022-07-13 12:58:58,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:58:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 246068 states and 269435 transitions. [2022-07-13 12:58:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-07-13 12:58:58,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:58:58,402 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:58:58,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 12:58:58,615 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,SelfDestructingSolverStorable12 [2022-07-13 12:58:58,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:58:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:58:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1020324039, now seen corresponding path program 1 times [2022-07-13 12:58:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:58:58,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407547054] [2022-07-13 12:58:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:58:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:58:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:58:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-13 12:58:58,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:58:58,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407547054] [2022-07-13 12:58:58,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407547054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:58:58,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:58:58,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:58:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633985103] [2022-07-13 12:58:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:58:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:58:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:58:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:58:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:58:58,753 INFO L87 Difference]: Start difference. First operand 246068 states and 269435 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:59:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:59:02,550 INFO L93 Difference]: Finished difference Result 490563 states and 537091 transitions. [2022-07-13 12:59:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:59:02,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 519 [2022-07-13 12:59:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:59:03,206 INFO L225 Difference]: With dead ends: 490563 [2022-07-13 12:59:03,207 INFO L226 Difference]: Without dead ends: 245284 [2022-07-13 12:59:03,311 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 [2022-07-13 12:59:03,322 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 926 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:59:03,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 702 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 12:59:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245284 states. [2022-07-13 12:59:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245284 to 243687. [2022-07-13 12:59:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243687 states, 243686 states have (on average 1.0802713327807096) internal successors, (263247), 243686 states have internal predecessors, (263247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:59:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243687 states to 243687 states and 263247 transitions. [2022-07-13 12:59:06,588 INFO L78 Accepts]: Start accepts. Automaton has 243687 states and 263247 transitions. Word has length 519 [2022-07-13 12:59:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:59:06,611 INFO L495 AbstractCegarLoop]: Abstraction has 243687 states and 263247 transitions. [2022-07-13 12:59:06,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:59:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 243687 states and 263247 transitions. [2022-07-13 12:59:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-07-13 12:59:06,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:59:06,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:59:06,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 12:59:06,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:59:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:59:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1949809512, now seen corresponding path program 1 times [2022-07-13 12:59:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:59:06,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139582641] [2022-07-13 12:59:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:59:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:59:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:59:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 357 proven. 113 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 12:59:06,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:59:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139582641] [2022-07-13 12:59:06,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139582641] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:59:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073432908] [2022-07-13 12:59:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:59:06,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:59:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:59:06,955 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) [2022-07-13 12:59:06,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 12:59:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:59:07,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:59:07,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:59:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-07-13 12:59:07,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:59:07,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073432908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:59:07,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:59:07,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:59:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558125667] [2022-07-13 12:59:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:59:07,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:59:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:59:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:59:07,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:59:07,102 INFO L87 Difference]: Start difference. First operand 243687 states and 263247 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:59:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:59:10,532 INFO L93 Difference]: Finished difference Result 465323 states and 503847 transitions. [2022-07-13 12:59:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:59:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 534 [2022-07-13 12:59:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:59:10,812 INFO L225 Difference]: With dead ends: 465323 [2022-07-13 12:59:10,813 INFO L226 Difference]: Without dead ends: 243682 [2022-07-13 12:59:10,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:59:10,925 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 915 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:59:10,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1835 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]