./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.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 2bcf8e94e45f6297ffcab2cc85820f358b499c9f0c3c1268c03065e80498ea32 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:57:14,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:57:14,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:57:15,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:57:15,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:57:15,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:57:15,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:57:15,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:57:15,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:57:15,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:57:15,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:57:15,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:57:15,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:57:15,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:57:15,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:57:15,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:57:15,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:57:15,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:57:15,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:57:15,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:57:15,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:57:15,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:57:15,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:57:15,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:57:15,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:57:15,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:57:15,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:57:15,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:57:15,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:57:15,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:57:15,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:57:15,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:57:15,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:57:15,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:57:15,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:57:15,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:57:15,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:57:15,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:57:15,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:57:15,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:57:15,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:57:15,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:57:15,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:57:15,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:57:15,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:57:15,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:57:15,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:57:15,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:57:15,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:57:15,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:57:15,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:57:15,088 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:57:15,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:57:15,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:57:15,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:57:15,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:57:15,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:57:15,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:57:15,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:57:15,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:57:15,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:57:15,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bcf8e94e45f6297ffcab2cc85820f358b499c9f0c3c1268c03065e80498ea32 [2022-07-21 07:57:15,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:57:15,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:57:15,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:57:15,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:57:15,366 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:57:15,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2022-07-21 07:57:15,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a19db34f/248832c838124651af10a5abdf3f25db/FLAG63e3521a5 [2022-07-21 07:57:15,968 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:57:15,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2022-07-21 07:57:15,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a19db34f/248832c838124651af10a5abdf3f25db/FLAG63e3521a5 [2022-07-21 07:57:16,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a19db34f/248832c838124651af10a5abdf3f25db [2022-07-21 07:57:16,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:57:16,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:57:16,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:57:16,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:57:16,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:57:16,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:57:16" (1/1) ... [2022-07-21 07:57:16,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597ac5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:16, skipping insertion in model container [2022-07-21 07:57:16,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:57:16" (1/1) ... [2022-07-21 07:57:16,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:57:16,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:57:16,594 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[20454,20467] [2022-07-21 07:57:16,632 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[22791,22804] [2022-07-21 07:57:17,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:57:17,177 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:57:17,217 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[20454,20467] [2022-07-21 07:57:17,224 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[22791,22804] [2022-07-21 07:57:17,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:57:17,524 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:57:17,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17 WrapperNode [2022-07-21 07:57:17,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:57:17,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:57:17,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:57:17,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:57:17,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:17,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:17,960 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2022-07-21 07:57:17,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:57:17,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:57:17,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:57:17,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:57:17,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:17,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:57:18,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:57:18,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:57:18,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:57:18,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (1/1) ... [2022-07-21 07:57:18,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:57:18,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:57:18,364 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) [2022-07-21 07:57:18,399 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 [2022-07-21 07:57:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:57:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:57:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:57:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:57:18,529 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:57:18,531 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:57:21,372 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:57:21,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:57:21,387 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:57:21,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:57:21 BoogieIcfgContainer [2022-07-21 07:57:21,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:57:21,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:57:21,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:57:21,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:57:21,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:57:16" (1/3) ... [2022-07-21 07:57:21,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d75b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:57:21, skipping insertion in model container [2022-07-21 07:57:21,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:57:17" (2/3) ... [2022-07-21 07:57:21,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d75b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:57:21, skipping insertion in model container [2022-07-21 07:57:21,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:57:21" (3/3) ... [2022-07-21 07:57:21,397 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2022-07-21 07:57:21,407 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:57:21,407 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:57:21,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:57:21,469 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@6e1ab2b1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43dabf44 [2022-07-21 07:57:21,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:57:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 07:57:21,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:21,481 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] [2022-07-21 07:57:21,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash -653213147, now seen corresponding path program 1 times [2022-07-21 07:57:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565122939] [2022-07-21 07:57:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:21,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:21,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565122939] [2022-07-21 07:57:21,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565122939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:21,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:21,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:57:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211272861] [2022-07-21 07:57:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:21,699 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:24,579 INFO L93 Difference]: Finished difference Result 2589 states and 4970 transitions. [2022-07-21 07:57:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:24,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-07-21 07:57:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:24,598 INFO L225 Difference]: With dead ends: 2589 [2022-07-21 07:57:24,599 INFO L226 Difference]: Without dead ends: 1631 [2022-07-21 07:57:24,604 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 [2022-07-21 07:57:24,610 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1095 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:24,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 375 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 07:57:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-07-21 07:57:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-07-21 07:57:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8385512584407613) internal successors, (2995), 1630 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2995 transitions. [2022-07-21 07:57:24,710 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2995 transitions. Word has length 20 [2022-07-21 07:57:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:24,711 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2995 transitions. [2022-07-21 07:57:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2995 transitions. [2022-07-21 07:57:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 07:57:24,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:24,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:24,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:57:24,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2022-07-21 07:57:24,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:24,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13509746] [2022-07-21 07:57:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:24,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:24,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:24,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13509746] [2022-07-21 07:57:24,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13509746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:24,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:24,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:57:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847173941] [2022-07-21 07:57:24,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:24,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:57:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:57:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:57:24,780 INFO L87 Difference]: Start difference. First operand 1631 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:24,844 INFO L93 Difference]: Finished difference Result 1705 states and 3110 transitions. [2022-07-21 07:57:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:57:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-21 07:57:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:24,850 INFO L225 Difference]: With dead ends: 1705 [2022-07-21 07:57:24,850 INFO L226 Difference]: Without dead ends: 1631 [2022-07-21 07:57:24,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:57:24,853 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:24,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-07-21 07:57:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-07-21 07:57:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8078575813382443) internal successors, (2945), 1630 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2945 transitions. [2022-07-21 07:57:24,888 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2945 transitions. Word has length 42 [2022-07-21 07:57:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:24,888 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2945 transitions. [2022-07-21 07:57:24,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2945 transitions. [2022-07-21 07:57:24,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 07:57:24,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:24,897 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:57:24,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:57:24,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:24,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 472434540, now seen corresponding path program 1 times [2022-07-21 07:57:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:24,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551268580] [2022-07-21 07:57:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551268580] [2022-07-21 07:57:25,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551268580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:25,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:25,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:25,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006721473] [2022-07-21 07:57:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:25,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 07:57:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:25,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 07:57:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 07:57:25,014 INFO L87 Difference]: Start difference. First operand 1631 states and 2945 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:29,788 INFO L93 Difference]: Finished difference Result 5388 states and 9835 transitions. [2022-07-21 07:57:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 07:57:29,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-07-21 07:57:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:29,801 INFO L225 Difference]: With dead ends: 5388 [2022-07-21 07:57:29,801 INFO L226 Difference]: Without dead ends: 3884 [2022-07-21 07:57:29,803 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 [2022-07-21 07:57:29,804 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 2504 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:29,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 878 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-21 07:57:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-07-21 07:57:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2022-07-21 07:57:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.564657393096342) internal successors, (6074), 3883 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6074 transitions. [2022-07-21 07:57:29,866 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6074 transitions. Word has length 89 [2022-07-21 07:57:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:29,866 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 6074 transitions. [2022-07-21 07:57:29,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6074 transitions. [2022-07-21 07:57:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:29,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:29,868 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:57:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:57:29,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1875829137, now seen corresponding path program 1 times [2022-07-21 07:57:29,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:29,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062601283] [2022-07-21 07:57:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 07:57:29,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:29,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062601283] [2022-07-21 07:57:29,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062601283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:29,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:29,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:57:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087447282] [2022-07-21 07:57:29,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:29,936 INFO L87 Difference]: Start difference. First operand 3884 states and 6074 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:32,393 INFO L93 Difference]: Finished difference Result 10645 states and 17126 transitions. [2022-07-21 07:57:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:32,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:32,412 INFO L225 Difference]: With dead ends: 10645 [2022-07-21 07:57:32,412 INFO L226 Difference]: Without dead ends: 6888 [2022-07-21 07:57:32,418 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 [2022-07-21 07:57:32,418 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 892 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:32,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 641 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 07:57:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2022-07-21 07:57:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6888. [2022-07-21 07:57:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.4228870171362185) internal successors, (9798), 6887 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 9798 transitions. [2022-07-21 07:57:32,520 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 9798 transitions. Word has length 91 [2022-07-21 07:57:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:32,521 INFO L495 AbstractCegarLoop]: Abstraction has 6888 states and 9798 transitions. [2022-07-21 07:57:32,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 9798 transitions. [2022-07-21 07:57:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:32,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:32,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:32,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:57:32,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:32,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:32,523 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2022-07-21 07:57:32,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:32,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519837604] [2022-07-21 07:57:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:32,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:32,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519837604] [2022-07-21 07:57:32,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519837604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:32,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:32,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364894220] [2022-07-21 07:57:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:32,597 INFO L87 Difference]: Start difference. First operand 6888 states and 9798 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:32,633 INFO L93 Difference]: Finished difference Result 7022 states and 10010 transitions. [2022-07-21 07:57:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:32,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:32,652 INFO L225 Difference]: With dead ends: 7022 [2022-07-21 07:57:32,652 INFO L226 Difference]: Without dead ends: 6952 [2022-07-21 07:57:32,655 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 [2022-07-21 07:57:32,659 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:32,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2022-07-21 07:57:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 6950. [2022-07-21 07:57:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6948 states have (on average 1.4244386873920554) internal successors, (9897), 6949 states have internal predecessors, (9897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 9897 transitions. [2022-07-21 07:57:32,799 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 9897 transitions. Word has length 91 [2022-07-21 07:57:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:32,799 INFO L495 AbstractCegarLoop]: Abstraction has 6950 states and 9897 transitions. [2022-07-21 07:57:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 9897 transitions. [2022-07-21 07:57:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:32,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:32,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:57:32,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2022-07-21 07:57:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:32,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003211288] [2022-07-21 07:57:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003211288] [2022-07-21 07:57:32,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003211288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:32,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:32,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773265419] [2022-07-21 07:57:32,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:32,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:32,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:32,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:32,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:32,852 INFO L87 Difference]: Start difference. First operand 6950 states and 9897 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:32,887 INFO L93 Difference]: Finished difference Result 7202 states and 10297 transitions. [2022-07-21 07:57:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:32,909 INFO L225 Difference]: With dead ends: 7202 [2022-07-21 07:57:32,909 INFO L226 Difference]: Without dead ends: 7070 [2022-07-21 07:57:32,911 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 [2022-07-21 07:57:32,911 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:32,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2022-07-21 07:57:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 7068. [2022-07-21 07:57:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7066 states have (on average 1.4271157656382678) internal successors, (10084), 7067 states have internal predecessors, (10084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 10084 transitions. [2022-07-21 07:57:33,003 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 10084 transitions. Word has length 91 [2022-07-21 07:57:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:33,004 INFO L495 AbstractCegarLoop]: Abstraction has 7068 states and 10084 transitions. [2022-07-21 07:57:33,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 10084 transitions. [2022-07-21 07:57:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:33,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:33,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:33,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:57:33,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2022-07-21 07:57:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:33,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062322108] [2022-07-21 07:57:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:33,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:33,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:33,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062322108] [2022-07-21 07:57:33,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062322108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:33,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:33,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120366273] [2022-07-21 07:57:33,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:33,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:33,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:33,049 INFO L87 Difference]: Start difference. First operand 7068 states and 10084 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:33,084 INFO L93 Difference]: Finished difference Result 7544 states and 10838 transitions. [2022-07-21 07:57:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:33,099 INFO L225 Difference]: With dead ends: 7544 [2022-07-21 07:57:33,100 INFO L226 Difference]: Without dead ends: 7294 [2022-07-21 07:57:33,102 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 [2022-07-21 07:57:33,102 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:33,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2022-07-21 07:57:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7292. [2022-07-21 07:57:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7292 states, 7290 states have (on average 1.4315500685871057) internal successors, (10436), 7291 states have internal predecessors, (10436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 10436 transitions. [2022-07-21 07:57:33,191 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 10436 transitions. Word has length 91 [2022-07-21 07:57:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:33,192 INFO L495 AbstractCegarLoop]: Abstraction has 7292 states and 10436 transitions. [2022-07-21 07:57:33,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 10436 transitions. [2022-07-21 07:57:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:33,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:33,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:57:33,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:33,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2022-07-21 07:57:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:33,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775501773] [2022-07-21 07:57:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:33,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:33,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775501773] [2022-07-21 07:57:33,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775501773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:33,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:33,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712246465] [2022-07-21 07:57:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:33,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:33,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:33,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:33,246 INFO L87 Difference]: Start difference. First operand 7292 states and 10436 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:33,290 INFO L93 Difference]: Finished difference Result 8192 states and 11854 transitions. [2022-07-21 07:57:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:33,300 INFO L225 Difference]: With dead ends: 8192 [2022-07-21 07:57:33,300 INFO L226 Difference]: Without dead ends: 7718 [2022-07-21 07:57:33,303 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 [2022-07-21 07:57:33,304 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:33,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2022-07-21 07:57:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7716. [2022-07-21 07:57:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7714 states have (on average 1.438423645320197) internal successors, (11096), 7715 states have internal predecessors, (11096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 11096 transitions. [2022-07-21 07:57:33,392 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 11096 transitions. Word has length 91 [2022-07-21 07:57:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:33,393 INFO L495 AbstractCegarLoop]: Abstraction has 7716 states and 11096 transitions. [2022-07-21 07:57:33,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 11096 transitions. [2022-07-21 07:57:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:33,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:33,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:57:33,396 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2022-07-21 07:57:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140887327] [2022-07-21 07:57:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:33,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:33,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140887327] [2022-07-21 07:57:33,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140887327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:33,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:33,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:33,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344625856] [2022-07-21 07:57:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:33,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:33,440 INFO L87 Difference]: Start difference. First operand 7716 states and 11096 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:33,504 INFO L93 Difference]: Finished difference Result 9416 states and 13754 transitions. [2022-07-21 07:57:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:33,516 INFO L225 Difference]: With dead ends: 9416 [2022-07-21 07:57:33,516 INFO L226 Difference]: Without dead ends: 8518 [2022-07-21 07:57:33,519 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 [2022-07-21 07:57:33,520 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:33,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2022-07-21 07:57:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8516. [2022-07-21 07:57:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 8514 states have (on average 1.4479680526192154) internal successors, (12328), 8515 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 12328 transitions. [2022-07-21 07:57:33,631 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 12328 transitions. Word has length 91 [2022-07-21 07:57:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:33,631 INFO L495 AbstractCegarLoop]: Abstraction has 8516 states and 12328 transitions. [2022-07-21 07:57:33,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 12328 transitions. [2022-07-21 07:57:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 07:57:33,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:33,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:57:33,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2022-07-21 07:57:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:33,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040418814] [2022-07-21 07:57:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:33,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:33,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040418814] [2022-07-21 07:57:33,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040418814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:33,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:33,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 07:57:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463603003] [2022-07-21 07:57:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 07:57:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 07:57:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:57:33,717 INFO L87 Difference]: Start difference. First operand 8516 states and 12328 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:34,629 INFO L93 Difference]: Finished difference Result 32288 states and 49302 transitions. [2022-07-21 07:57:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:57:34,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-21 07:57:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:34,685 INFO L225 Difference]: With dead ends: 32288 [2022-07-21 07:57:34,686 INFO L226 Difference]: Without dead ends: 30590 [2022-07-21 07:57:34,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-21 07:57:34,701 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:34,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:57:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30590 states. [2022-07-21 07:57:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30590 to 10212. [2022-07-21 07:57:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10212 states, 10210 states have (on average 1.4597453476983349) internal successors, (14904), 10211 states have internal predecessors, (14904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 14904 transitions. [2022-07-21 07:57:35,144 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 14904 transitions. Word has length 91 [2022-07-21 07:57:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:35,144 INFO L495 AbstractCegarLoop]: Abstraction has 10212 states and 14904 transitions. [2022-07-21 07:57:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 14904 transitions. [2022-07-21 07:57:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 07:57:35,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:35,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:57:35,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2022-07-21 07:57:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740391518] [2022-07-21 07:57:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:35,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:35,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:35,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740391518] [2022-07-21 07:57:35,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740391518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:35,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:35,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136722186] [2022-07-21 07:57:35,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:35,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:35,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:35,184 INFO L87 Difference]: Start difference. First operand 10212 states and 14904 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:35,604 INFO L93 Difference]: Finished difference Result 16648 states and 24730 transitions. [2022-07-21 07:57:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:35,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-21 07:57:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:35,626 INFO L225 Difference]: With dead ends: 16648 [2022-07-21 07:57:35,626 INFO L226 Difference]: Without dead ends: 13254 [2022-07-21 07:57:35,633 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 [2022-07-21 07:57:35,633 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:35,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2022-07-21 07:57:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13188. [2022-07-21 07:57:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.462763537084787) internal successors, (19288), 13187 states have internal predecessors, (19288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 19288 transitions. [2022-07-21 07:57:36,214 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 19288 transitions. Word has length 93 [2022-07-21 07:57:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:36,215 INFO L495 AbstractCegarLoop]: Abstraction has 13188 states and 19288 transitions. [2022-07-21 07:57:36,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 19288 transitions. [2022-07-21 07:57:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 07:57:36,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:36,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:36,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:57:36,217 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2022-07-21 07:57:36,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:36,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692780080] [2022-07-21 07:57:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:36,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:36,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692780080] [2022-07-21 07:57:36,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692780080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:36,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:36,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 07:57:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926114514] [2022-07-21 07:57:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:36,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 07:57:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 07:57:36,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:57:36,374 INFO L87 Difference]: Start difference. First operand 13188 states and 19288 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:36,993 INFO L93 Difference]: Finished difference Result 19560 states and 28890 transitions. [2022-07-21 07:57:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 07:57:36,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-21 07:57:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:37,017 INFO L225 Difference]: With dead ends: 19560 [2022-07-21 07:57:37,017 INFO L226 Difference]: Without dead ends: 13190 [2022-07-21 07:57:37,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-21 07:57:37,028 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:37,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4941 Valid, 2301 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:57:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13190 states. [2022-07-21 07:57:37,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13190 to 13188. [2022-07-21 07:57:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.4579099044441073) internal successors, (19224), 13187 states have internal predecessors, (19224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 19224 transitions. [2022-07-21 07:57:37,468 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 19224 transitions. Word has length 93 [2022-07-21 07:57:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:37,468 INFO L495 AbstractCegarLoop]: Abstraction has 13188 states and 19224 transitions. [2022-07-21 07:57:37,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 19224 transitions. [2022-07-21 07:57:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 07:57:37,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:37,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:37,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:57:37,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2022-07-21 07:57:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:37,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179360869] [2022-07-21 07:57:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:37,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179360869] [2022-07-21 07:57:37,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179360869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:37,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:37,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226034139] [2022-07-21 07:57:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:37,495 INFO L87 Difference]: Start difference. First operand 13188 states and 19224 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:38,194 INFO L93 Difference]: Finished difference Result 25160 states and 37018 transitions. [2022-07-21 07:57:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-21 07:57:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:38,224 INFO L225 Difference]: With dead ends: 25160 [2022-07-21 07:57:38,225 INFO L226 Difference]: Without dead ends: 18790 [2022-07-21 07:57:38,237 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 [2022-07-21 07:57:38,238 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:38,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18790 states. [2022-07-21 07:57:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18790 to 18788. [2022-07-21 07:57:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 18786 states have (on average 1.455977855850101) internal successors, (27352), 18787 states have internal predecessors, (27352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 27352 transitions. [2022-07-21 07:57:39,081 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 27352 transitions. Word has length 93 [2022-07-21 07:57:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:39,081 INFO L495 AbstractCegarLoop]: Abstraction has 18788 states and 27352 transitions. [2022-07-21 07:57:39,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 27352 transitions. [2022-07-21 07:57:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-21 07:57:39,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:39,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 07:57:39,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2022-07-21 07:57:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:39,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097574957] [2022-07-21 07:57:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:39,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097574957] [2022-07-21 07:57:39,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097574957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:39,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:39,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:57:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858654013] [2022-07-21 07:57:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:39,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:57:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:57:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:57:39,154 INFO L87 Difference]: Start difference. First operand 18788 states and 27352 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:40,677 INFO L93 Difference]: Finished difference Result 27658 states and 40264 transitions. [2022-07-21 07:57:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:57:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-21 07:57:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:40,719 INFO L225 Difference]: With dead ends: 27658 [2022-07-21 07:57:40,719 INFO L226 Difference]: Without dead ends: 27656 [2022-07-21 07:57:40,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-21 07:57:40,727 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:40,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27656 states. [2022-07-21 07:57:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27656 to 19172. [2022-07-21 07:57:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19172 states, 19170 states have (on average 1.4435054773082943) internal successors, (27672), 19171 states have internal predecessors, (27672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19172 states to 19172 states and 27672 transitions. [2022-07-21 07:57:41,789 INFO L78 Accepts]: Start accepts. Automaton has 19172 states and 27672 transitions. Word has length 94 [2022-07-21 07:57:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:41,790 INFO L495 AbstractCegarLoop]: Abstraction has 19172 states and 27672 transitions. [2022-07-21 07:57:41,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19172 states and 27672 transitions. [2022-07-21 07:57:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 07:57:41,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:41,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:57:41,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 07:57:41,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:41,791 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2022-07-21 07:57:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:41,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183964726] [2022-07-21 07:57:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:57:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183964726] [2022-07-21 07:57:41,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183964726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:41,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:41,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:57:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048747975] [2022-07-21 07:57:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:57:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:57:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:57:41,820 INFO L87 Difference]: Start difference. First operand 19172 states and 27672 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:43,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:43,054 INFO L93 Difference]: Finished difference Result 31723 states and 46110 transitions. [2022-07-21 07:57:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:57:43,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-07-21 07:57:43,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:43,087 INFO L225 Difference]: With dead ends: 31723 [2022-07-21 07:57:43,087 INFO L226 Difference]: Without dead ends: 24936 [2022-07-21 07:57:43,096 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 [2022-07-21 07:57:43,097 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:43,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:57:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24936 states. [2022-07-21 07:57:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24936 to 24934. [2022-07-21 07:57:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24934 states, 24932 states have (on average 1.4411198459810686) internal successors, (35930), 24933 states have internal predecessors, (35930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 35930 transitions. [2022-07-21 07:57:44,716 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 35930 transitions. Word has length 95 [2022-07-21 07:57:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:44,716 INFO L495 AbstractCegarLoop]: Abstraction has 24934 states and 35930 transitions. [2022-07-21 07:57:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 35930 transitions. [2022-07-21 07:57:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 07:57:44,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:44,724 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:57:44,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 07:57:44,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2022-07-21 07:57:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:44,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685734117] [2022-07-21 07:57:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 07:57:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:44,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685734117] [2022-07-21 07:57:44,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685734117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:44,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:44,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 07:57:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81035674] [2022-07-21 07:57:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 07:57:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 07:57:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:57:44,807 INFO L87 Difference]: Start difference. First operand 24934 states and 35930 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:57:54,429 INFO L93 Difference]: Finished difference Result 155254 states and 224546 transitions. [2022-07-21 07:57:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 07:57:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 130 [2022-07-21 07:57:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:57:54,629 INFO L225 Difference]: With dead ends: 155254 [2022-07-21 07:57:54,629 INFO L226 Difference]: Without dead ends: 137140 [2022-07-21 07:57:54,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-21 07:57:54,661 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:57:54,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:57:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137140 states. [2022-07-21 07:57:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137140 to 43046. [2022-07-21 07:57:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43044 states have (on average 1.4398754762568535) internal successors, (61978), 43045 states have internal predecessors, (61978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 61978 transitions. [2022-07-21 07:57:58,823 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 61978 transitions. Word has length 130 [2022-07-21 07:57:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:57:58,824 INFO L495 AbstractCegarLoop]: Abstraction has 43046 states and 61978 transitions. [2022-07-21 07:57:58,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:57:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 61978 transitions. [2022-07-21 07:57:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 07:57:58,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:57:58,833 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:57:58,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 07:57:58,833 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:57:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:57:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2022-07-21 07:57:58,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:57:58,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122587698] [2022-07-21 07:57:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:57:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:57:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:57:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 07:57:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:57:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122587698] [2022-07-21 07:57:58,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122587698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:57:58,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:57:58,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 07:57:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921908906] [2022-07-21 07:57:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:57:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 07:57:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:57:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 07:57:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:57:58,936 INFO L87 Difference]: Start difference. First operand 43046 states and 61978 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:58:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:58:11,375 INFO L93 Difference]: Finished difference Result 173366 states and 250594 transitions. [2022-07-21 07:58:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 07:58:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 130 [2022-07-21 07:58:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:58:11,607 INFO L225 Difference]: With dead ends: 173366 [2022-07-21 07:58:11,608 INFO L226 Difference]: Without dead ends: 155252 [2022-07-21 07:58:11,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-21 07:58:11,648 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 10608 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10608 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:58:11,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10608 Valid, 4240 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:58:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155252 states. [2022-07-21 07:58:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155252 to 70246. [2022-07-21 07:58:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70246 states, 70244 states have (on average 1.436279255167701) internal successors, (100890), 70245 states have internal predecessors, (100890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:58:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70246 states to 70246 states and 100890 transitions. [2022-07-21 07:58:18,460 INFO L78 Accepts]: Start accepts. Automaton has 70246 states and 100890 transitions. Word has length 130 [2022-07-21 07:58:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:58:18,460 INFO L495 AbstractCegarLoop]: Abstraction has 70246 states and 100890 transitions. [2022-07-21 07:58:18,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:58:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 70246 states and 100890 transitions. [2022-07-21 07:58:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 07:58:18,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:58:18,472 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:58:18,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 07:58:18,472 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:58:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:58:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash 565410506, now seen corresponding path program 1 times [2022-07-21 07:58:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:58:18,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707709740] [2022-07-21 07:58:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:58:18,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:58:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:58:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 07:58:18,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:58:18,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707709740] [2022-07-21 07:58:18,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707709740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:58:18,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:58:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 07:58:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048652725] [2022-07-21 07:58:18,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:58:18,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 07:58:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:58:18,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 07:58:18,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:58:18,573 INFO L87 Difference]: Start difference. First operand 70246 states and 100890 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:58:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:58:33,120 INFO L93 Difference]: Finished difference Result 191478 states and 276642 transitions. [2022-07-21 07:58:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 07:58:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 130 [2022-07-21 07:58:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:58:33,388 INFO L225 Difference]: With dead ends: 191478 [2022-07-21 07:58:33,388 INFO L226 Difference]: Without dead ends: 173364 [2022-07-21 07:58:33,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-21 07:58:33,428 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 10515 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10515 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:58:33,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10515 Valid, 4296 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:58:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173364 states.