./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.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 fe9d78f75108492828570ec5eb222efdf0cf36e1ec4bcab23f2d45d29dbfe193 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:29:03,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:29:03,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:29:03,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:29:03,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:29:03,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:29:03,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:29:03,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:29:03,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:29:03,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:29:03,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:29:03,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:29:03,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:29:03,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:29:03,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:29:03,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:29:03,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:29:03,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:29:03,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:29:03,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:29:03,976 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:29:03,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:29:03,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:29:03,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:29:03,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:29:03,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:29:03,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:29:03,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:29:03,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:29:03,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:29:03,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:29:03,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:29:04,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:29:04,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:29:04,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:29:04,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:29:04,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:29:04,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:29:04,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:29:04,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:29:04,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:29:04,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:29:04,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:29:04,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:29:04,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:29:04,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:29:04,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:29:04,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:29:04,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:29:04,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:29:04,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:29:04,046 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:29:04,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:29:04,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:29:04,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:29:04,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:29:04,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:29:04,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:29:04,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:29:04,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:29:04,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:29:04,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:29:04,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:29:04,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:29:04,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:29:04,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:29:04,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:29:04,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:29:04,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:29:04,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:29:04,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:29:04,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:29:04,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:29:04,051 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:29:04,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:29:04,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:29:04,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe9d78f75108492828570ec5eb222efdf0cf36e1ec4bcab23f2d45d29dbfe193 [2022-07-13 18:29:04,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:29:04,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:29:04,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:29:04,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:29:04,311 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:29:04,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2022-07-13 18:29:04,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cfdadf6/e12f414f7cf047509f0e6f7d9e2a5f9d/FLAG2f9afdce8 [2022-07-13 18:29:04,880 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:29:04,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2022-07-13 18:29:04,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cfdadf6/e12f414f7cf047509f0e6f7d9e2a5f9d/FLAG2f9afdce8 [2022-07-13 18:29:05,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cfdadf6/e12f414f7cf047509f0e6f7d9e2a5f9d [2022-07-13 18:29:05,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:29:05,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:29:05,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:29:05,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:29:05,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:29:05,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632906d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05, skipping insertion in model container [2022-07-13 18:29:05,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:29:05,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:29:05,565 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/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2022-07-13 18:29:05,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:29:05,575 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:29:05,642 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/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2022-07-13 18:29:05,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:29:05,657 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:29:05,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05 WrapperNode [2022-07-13 18:29:05,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:29:05,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:29:05,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:29:05,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:29:05,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,745 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1007 [2022-07-13 18:29:05,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:29:05,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:29:05,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:29:05,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:29:05,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:29:05,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:29:05,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:29:05,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:29:05,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (1/1) ... [2022-07-13 18:29:05,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:29:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:29:05,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:29:05,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:29:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:29:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:29:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:29:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:29:06,103 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:29:06,105 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:29:06,950 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:29:06,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:29:06,965 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:29:06,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:29:06 BoogieIcfgContainer [2022-07-13 18:29:06,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:29:06,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:29:06,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:29:06,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:29:06,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:29:05" (1/3) ... [2022-07-13 18:29:06,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c561df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:29:06, skipping insertion in model container [2022-07-13 18:29:06,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:29:05" (2/3) ... [2022-07-13 18:29:06,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c561df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:29:06, skipping insertion in model container [2022-07-13 18:29:06,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:29:06" (3/3) ... [2022-07-13 18:29:06,977 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2022-07-13 18:29:07,015 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:29:07,016 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:29:07,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:29:07,093 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@9690820, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19e1af63 [2022-07-13 18:29:07,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:29:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 18:29:07,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:07,137 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] [2022-07-13 18:29:07,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1105173396, now seen corresponding path program 1 times [2022-07-13 18:29:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:07,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936522080] [2022-07-13 18:29:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:07,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936522080] [2022-07-13 18:29:07,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936522080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:07,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:07,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:29:07,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304534168] [2022-07-13 18:29:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:07,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:29:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:29:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:29:07,481 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:07,522 INFO L93 Difference]: Finished difference Result 453 states and 802 transitions. [2022-07-13 18:29:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:29:07,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-13 18:29:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:07,536 INFO L225 Difference]: With dead ends: 453 [2022-07-13 18:29:07,537 INFO L226 Difference]: Without dead ends: 320 [2022-07-13 18:29:07,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:29:07,542 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:07,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-13 18:29:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-07-13 18:29:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.8025078369905956) internal successors, (575), 319 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 575 transitions. [2022-07-13 18:29:07,607 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 575 transitions. Word has length 77 [2022-07-13 18:29:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:07,608 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 575 transitions. [2022-07-13 18:29:07,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,609 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 575 transitions. [2022-07-13 18:29:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 18:29:07,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:07,611 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] [2022-07-13 18:29:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:29:07,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 971159890, now seen corresponding path program 1 times [2022-07-13 18:29:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883554821] [2022-07-13 18:29:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:07,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883554821] [2022-07-13 18:29:07,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883554821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:07,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:07,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:29:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751654400] [2022-07-13 18:29:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:29:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:29:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:29:07,780 INFO L87 Difference]: Start difference. First operand 320 states and 575 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:07,883 INFO L93 Difference]: Finished difference Result 448 states and 792 transitions. [2022-07-13 18:29:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:29:07,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-13 18:29:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:07,888 INFO L225 Difference]: With dead ends: 448 [2022-07-13 18:29:07,888 INFO L226 Difference]: Without dead ends: 320 [2022-07-13 18:29:07,895 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 [2022-07-13 18:29:07,897 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 3 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:07,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2243 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-13 18:29:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-07-13 18:29:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.658307210031348) internal successors, (529), 319 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 529 transitions. [2022-07-13 18:29:07,915 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 529 transitions. Word has length 77 [2022-07-13 18:29:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:07,915 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 529 transitions. [2022-07-13 18:29:07,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 529 transitions. [2022-07-13 18:29:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 18:29:07,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:07,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:07,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:29:07,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 750751880, now seen corresponding path program 1 times [2022-07-13 18:29:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:07,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929398868] [2022-07-13 18:29:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:08,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929398868] [2022-07-13 18:29:08,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929398868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:08,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:08,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763211236] [2022-07-13 18:29:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:08,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,065 INFO L87 Difference]: Start difference. First operand 320 states and 529 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:08,098 INFO L93 Difference]: Finished difference Result 556 states and 933 transitions. [2022-07-13 18:29:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-13 18:29:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:08,102 INFO L225 Difference]: With dead ends: 556 [2022-07-13 18:29:08,102 INFO L226 Difference]: Without dead ends: 432 [2022-07-13 18:29:08,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,104 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 183 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:08,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 998 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-13 18:29:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-07-13 18:29:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6643356643356644) internal successors, (714), 429 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-07-13 18:29:08,120 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 122 [2022-07-13 18:29:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:08,123 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-07-13 18:29:08,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-07-13 18:29:08,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 18:29:08,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:08,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:29:08,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash -44233893, now seen corresponding path program 1 times [2022-07-13 18:29:08,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:08,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334955431] [2022-07-13 18:29:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:08,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:08,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334955431] [2022-07-13 18:29:08,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334955431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:08,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:08,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171185869] [2022-07-13 18:29:08,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,240 INFO L87 Difference]: Start difference. First operand 430 states and 714 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:08,266 INFO L93 Difference]: Finished difference Result 878 states and 1474 transitions. [2022-07-13 18:29:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:08,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-07-13 18:29:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:08,270 INFO L225 Difference]: With dead ends: 878 [2022-07-13 18:29:08,270 INFO L226 Difference]: Without dead ends: 644 [2022-07-13 18:29:08,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,272 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 184 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:08,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1010 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-07-13 18:29:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2022-07-13 18:29:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.673946957878315) internal successors, (1073), 641 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1073 transitions. [2022-07-13 18:29:08,292 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1073 transitions. Word has length 125 [2022-07-13 18:29:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:08,293 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 1073 transitions. [2022-07-13 18:29:08,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1073 transitions. [2022-07-13 18:29:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 18:29:08,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:08,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:08,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:29:08,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:08,297 INFO L85 PathProgramCache]: Analyzing trace with hash 487395088, now seen corresponding path program 1 times [2022-07-13 18:29:08,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:08,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138541810] [2022-07-13 18:29:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138541810] [2022-07-13 18:29:08,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138541810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:08,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:08,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:08,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320853452] [2022-07-13 18:29:08,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:08,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:08,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:08,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:08,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,446 INFO L87 Difference]: Start difference. First operand 642 states and 1073 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:08,482 INFO L93 Difference]: Finished difference Result 1494 states and 2515 transitions. [2022-07-13 18:29:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-07-13 18:29:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:08,489 INFO L225 Difference]: With dead ends: 1494 [2022-07-13 18:29:08,490 INFO L226 Difference]: Without dead ends: 1048 [2022-07-13 18:29:08,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,495 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 177 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:08,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1011 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-07-13 18:29:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2022-07-13 18:29:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.677511961722488) internal successors, (1753), 1045 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1753 transitions. [2022-07-13 18:29:08,530 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1753 transitions. Word has length 128 [2022-07-13 18:29:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:08,532 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1753 transitions. [2022-07-13 18:29:08,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1753 transitions. [2022-07-13 18:29:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 18:29:08,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:08,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:08,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:29:08,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:08,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1255785821, now seen corresponding path program 1 times [2022-07-13 18:29:08,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:08,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889105856] [2022-07-13 18:29:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:08,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:08,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889105856] [2022-07-13 18:29:08,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889105856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:08,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:08,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063860954] [2022-07-13 18:29:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,626 INFO L87 Difference]: Start difference. First operand 1046 states and 1753 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:08,670 INFO L93 Difference]: Finished difference Result 2666 states and 4483 transitions. [2022-07-13 18:29:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-07-13 18:29:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:08,678 INFO L225 Difference]: With dead ends: 2666 [2022-07-13 18:29:08,678 INFO L226 Difference]: Without dead ends: 1816 [2022-07-13 18:29:08,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:08,682 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 170 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:08,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1012 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-07-13 18:29:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1814. [2022-07-13 18:29:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 1.6751241036955322) internal successors, (3037), 1813 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 3037 transitions. [2022-07-13 18:29:08,735 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 3037 transitions. Word has length 131 [2022-07-13 18:29:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:08,735 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 3037 transitions. [2022-07-13 18:29:08,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 3037 transitions. [2022-07-13 18:29:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 18:29:08,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:08,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:29:08,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash 871480728, now seen corresponding path program 1 times [2022-07-13 18:29:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:08,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527172166] [2022-07-13 18:29:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:08,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:08,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527172166] [2022-07-13 18:29:08,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527172166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:08,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:08,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:29:08,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596675097] [2022-07-13 18:29:08,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:08,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:29:08,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:29:08,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:29:08,858 INFO L87 Difference]: Start difference. First operand 1814 states and 3037 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:09,192 INFO L93 Difference]: Finished difference Result 9350 states and 15821 transitions. [2022-07-13 18:29:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:29:09,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-07-13 18:29:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:09,225 INFO L225 Difference]: With dead ends: 9350 [2022-07-13 18:29:09,225 INFO L226 Difference]: Without dead ends: 7732 [2022-07-13 18:29:09,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:29:09,236 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1685 mSDsluCounter, 3840 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:09,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 4361 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2022-07-13 18:29:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 3322. [2022-07-13 18:29:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 1.6772056609454984) internal successors, (5570), 3321 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5570 transitions. [2022-07-13 18:29:09,407 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5570 transitions. Word has length 134 [2022-07-13 18:29:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:09,407 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 5570 transitions. [2022-07-13 18:29:09,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5570 transitions. [2022-07-13 18:29:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 18:29:09,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:09,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:29:09,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash -848507773, now seen corresponding path program 1 times [2022-07-13 18:29:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:09,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451093700] [2022-07-13 18:29:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:09,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451093700] [2022-07-13 18:29:09,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451093700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:09,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:09,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:29:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023715169] [2022-07-13 18:29:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:29:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:29:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:29:09,528 INFO L87 Difference]: Start difference. First operand 3322 states and 5570 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:09,753 INFO L93 Difference]: Finished difference Result 9692 states and 16356 transitions. [2022-07-13 18:29:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:29:09,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-07-13 18:29:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:09,781 INFO L225 Difference]: With dead ends: 9692 [2022-07-13 18:29:09,781 INFO L226 Difference]: Without dead ends: 6566 [2022-07-13 18:29:09,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:29:09,786 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 618 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:09,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1717 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2022-07-13 18:29:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 4927. [2022-07-13 18:29:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4926 states have (on average 1.6798619569630533) internal successors, (8275), 4926 states have internal predecessors, (8275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 8275 transitions. [2022-07-13 18:29:10,005 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 8275 transitions. Word has length 135 [2022-07-13 18:29:10,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:10,006 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 8275 transitions. [2022-07-13 18:29:10,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:10,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 8275 transitions. [2022-07-13 18:29:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 18:29:10,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:10,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:29:10,014 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash 942022462, now seen corresponding path program 1 times [2022-07-13 18:29:10,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:10,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513691519] [2022-07-13 18:29:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513691519] [2022-07-13 18:29:10,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513691519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:10,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:10,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736916433] [2022-07-13 18:29:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:10,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:10,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:10,110 INFO L87 Difference]: Start difference. First operand 4927 states and 8275 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:10,325 INFO L93 Difference]: Finished difference Result 9527 states and 16015 transitions. [2022-07-13 18:29:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:10,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-13 18:29:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:10,353 INFO L225 Difference]: With dead ends: 9527 [2022-07-13 18:29:10,353 INFO L226 Difference]: Without dead ends: 6957 [2022-07-13 18:29:10,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:10,358 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 185 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1141 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 [2022-07-13 18:29:10,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2022-07-13 18:29:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 6955. [2022-07-13 18:29:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6955 states, 6954 states have (on average 1.674000575208513) internal successors, (11641), 6954 states have internal predecessors, (11641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 11641 transitions. [2022-07-13 18:29:10,640 INFO L78 Accepts]: Start accepts. Automaton has 6955 states and 11641 transitions. Word has length 136 [2022-07-13 18:29:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:10,641 INFO L495 AbstractCegarLoop]: Abstraction has 6955 states and 11641 transitions. [2022-07-13 18:29:10,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states and 11641 transitions. [2022-07-13 18:29:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 18:29:10,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:10,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:10,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:29:10,644 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -506487182, now seen corresponding path program 1 times [2022-07-13 18:29:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:10,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065942167] [2022-07-13 18:29:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:10,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:10,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065942167] [2022-07-13 18:29:10,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065942167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:10,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:10,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:10,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818207621] [2022-07-13 18:29:10,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:10,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:10,716 INFO L87 Difference]: Start difference. First operand 6955 states and 11641 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:11,000 INFO L93 Difference]: Finished difference Result 13407 states and 22463 transitions. [2022-07-13 18:29:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-13 18:29:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:11,027 INFO L225 Difference]: With dead ends: 13407 [2022-07-13 18:29:11,027 INFO L226 Difference]: Without dead ends: 9781 [2022-07-13 18:29:11,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:11,035 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 178 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1117 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 [2022-07-13 18:29:11,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1117 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2022-07-13 18:29:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 9779. [2022-07-13 18:29:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9779 states, 9778 states have (on average 1.6677234608304357) internal successors, (16307), 9778 states have internal predecessors, (16307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16307 transitions. [2022-07-13 18:29:11,408 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 16307 transitions. Word has length 136 [2022-07-13 18:29:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:11,409 INFO L495 AbstractCegarLoop]: Abstraction has 9779 states and 16307 transitions. [2022-07-13 18:29:11,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 16307 transitions. [2022-07-13 18:29:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 18:29:11,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:11,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:29:11,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2094526018, now seen corresponding path program 1 times [2022-07-13 18:29:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:11,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306085338] [2022-07-13 18:29:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:11,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:11,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306085338] [2022-07-13 18:29:11,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306085338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:11,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:11,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:11,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790537563] [2022-07-13 18:29:11,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:11,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:11,484 INFO L87 Difference]: Start difference. First operand 9779 states and 16307 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:11,865 INFO L93 Difference]: Finished difference Result 18739 states and 31281 transitions. [2022-07-13 18:29:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:11,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-13 18:29:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:11,896 INFO L225 Difference]: With dead ends: 18739 [2022-07-13 18:29:11,896 INFO L226 Difference]: Without dead ends: 13643 [2022-07-13 18:29:11,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:11,907 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 171 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1093 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 [2022-07-13 18:29:11,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1093 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13643 states. [2022-07-13 18:29:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13643 to 13641. [2022-07-13 18:29:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 1.6607771260997068) internal successors, (22653), 13640 states have internal predecessors, (22653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 22653 transitions. [2022-07-13 18:29:12,411 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 22653 transitions. Word has length 136 [2022-07-13 18:29:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:12,412 INFO L495 AbstractCegarLoop]: Abstraction has 13641 states and 22653 transitions. [2022-07-13 18:29:12,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 22653 transitions. [2022-07-13 18:29:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 18:29:12,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:12,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:12,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:29:12,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:12,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1835427887, now seen corresponding path program 1 times [2022-07-13 18:29:12,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:12,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958727078] [2022-07-13 18:29:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:12,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958727078] [2022-07-13 18:29:12,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958727078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:12,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:12,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:29:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18596813] [2022-07-13 18:29:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:12,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:29:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:29:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:29:12,483 INFO L87 Difference]: Start difference. First operand 13641 states and 22653 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:13,380 INFO L93 Difference]: Finished difference Result 44058 states and 73290 transitions. [2022-07-13 18:29:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:29:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-13 18:29:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:13,458 INFO L225 Difference]: With dead ends: 44058 [2022-07-13 18:29:13,459 INFO L226 Difference]: Without dead ends: 30777 [2022-07-13 18:29:13,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:29:13,485 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 617 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:13,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1713 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2022-07-13 18:29:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 22155. [2022-07-13 18:29:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22155 states, 22154 states have (on average 1.6551864223165116) internal successors, (36669), 22154 states have internal predecessors, (36669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22155 states to 22155 states and 36669 transitions. [2022-07-13 18:29:14,449 INFO L78 Accepts]: Start accepts. Automaton has 22155 states and 36669 transitions. Word has length 136 [2022-07-13 18:29:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:14,449 INFO L495 AbstractCegarLoop]: Abstraction has 22155 states and 36669 transitions. [2022-07-13 18:29:14,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:14,450 INFO L276 IsEmpty]: Start isEmpty. Operand 22155 states and 36669 transitions. [2022-07-13 18:29:14,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 18:29:14,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:14,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:14,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:29:14,452 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1829805838, now seen corresponding path program 1 times [2022-07-13 18:29:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:14,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429677364] [2022-07-13 18:29:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:14,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429677364] [2022-07-13 18:29:14,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429677364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:14,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:14,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:29:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291342564] [2022-07-13 18:29:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:29:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:29:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:14,528 INFO L87 Difference]: Start difference. First operand 22155 states and 36669 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:15,528 INFO L93 Difference]: Finished difference Result 48794 states and 81139 transitions. [2022-07-13 18:29:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-13 18:29:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:15,625 INFO L225 Difference]: With dead ends: 48794 [2022-07-13 18:29:15,626 INFO L226 Difference]: Without dead ends: 33280 [2022-07-13 18:29:15,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:29:15,659 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 192 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1175 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 [2022-07-13 18:29:15,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33280 states. [2022-07-13 18:29:16,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33280 to 33278. [2022-07-13 18:29:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33278 states, 33277 states have (on average 1.6503591068906451) internal successors, (54919), 33277 states have internal predecessors, (54919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33278 states to 33278 states and 54919 transitions. [2022-07-13 18:29:16,754 INFO L78 Accepts]: Start accepts. Automaton has 33278 states and 54919 transitions. Word has length 136 [2022-07-13 18:29:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:16,754 INFO L495 AbstractCegarLoop]: Abstraction has 33278 states and 54919 transitions. [2022-07-13 18:29:16,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 33278 states and 54919 transitions. [2022-07-13 18:29:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 18:29:16,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:16,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:16,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:29:16,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -692908230, now seen corresponding path program 1 times [2022-07-13 18:29:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211412676] [2022-07-13 18:29:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:16,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:16,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211412676] [2022-07-13 18:29:16,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211412676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:16,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:16,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:29:16,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6473376] [2022-07-13 18:29:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:29:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:29:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:29:16,819 INFO L87 Difference]: Start difference. First operand 33278 states and 54919 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:18,666 INFO L93 Difference]: Finished difference Result 108186 states and 178737 transitions. [2022-07-13 18:29:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:29:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-07-13 18:29:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:18,906 INFO L225 Difference]: With dead ends: 108186 [2022-07-13 18:29:18,907 INFO L226 Difference]: Without dead ends: 75154 [2022-07-13 18:29:18,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:29:18,965 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 615 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:18,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1715 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75154 states. [2022-07-13 18:29:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75154 to 54073. [2022-07-13 18:29:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54073 states, 54072 states have (on average 1.6433459091581595) internal successors, (88859), 54072 states have internal predecessors, (88859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54073 states to 54073 states and 88859 transitions. [2022-07-13 18:29:20,804 INFO L78 Accepts]: Start accepts. Automaton has 54073 states and 88859 transitions. Word has length 137 [2022-07-13 18:29:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:20,804 INFO L495 AbstractCegarLoop]: Abstraction has 54073 states and 88859 transitions. [2022-07-13 18:29:20,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 54073 states and 88859 transitions. [2022-07-13 18:29:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 18:29:20,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:20,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:29:20,807 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1592912186, now seen corresponding path program 1 times [2022-07-13 18:29:20,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:20,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367860176] [2022-07-13 18:29:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:20,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:20,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367860176] [2022-07-13 18:29:20,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367860176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:20,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:20,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:29:20,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61498430] [2022-07-13 18:29:20,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:20,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:29:20,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:20,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:29:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:29:20,892 INFO L87 Difference]: Start difference. First operand 54073 states and 88859 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:23,805 INFO L93 Difference]: Finished difference Result 173820 states and 285957 transitions. [2022-07-13 18:29:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:29:23,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-13 18:29:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:24,091 INFO L225 Difference]: With dead ends: 173820 [2022-07-13 18:29:24,091 INFO L226 Difference]: Without dead ends: 119993 [2022-07-13 18:29:24,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:29:24,157 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 613 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:24,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1717 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119993 states. [2022-07-13 18:29:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119993 to 86808. [2022-07-13 18:29:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86808 states, 86807 states have (on average 1.6364924487656525) internal successors, (142059), 86807 states have internal predecessors, (142059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86808 states to 86808 states and 142059 transitions. [2022-07-13 18:29:27,303 INFO L78 Accepts]: Start accepts. Automaton has 86808 states and 142059 transitions. Word has length 138 [2022-07-13 18:29:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:27,304 INFO L495 AbstractCegarLoop]: Abstraction has 86808 states and 142059 transitions. [2022-07-13 18:29:27,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 86808 states and 142059 transitions. [2022-07-13 18:29:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 18:29:27,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:27,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:27,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:29:27,306 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash 298565918, now seen corresponding path program 1 times [2022-07-13 18:29:27,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:27,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138505690] [2022-07-13 18:29:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:27,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:27,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138505690] [2022-07-13 18:29:27,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138505690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:27,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:27,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:29:27,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234157020] [2022-07-13 18:29:27,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:27,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:29:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:29:27,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:29:27,463 INFO L87 Difference]: Start difference. First operand 86808 states and 142059 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:30,265 INFO L93 Difference]: Finished difference Result 173372 states and 283726 transitions. [2022-07-13 18:29:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:29:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-07-13 18:29:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:30,442 INFO L225 Difference]: With dead ends: 173372 [2022-07-13 18:29:30,442 INFO L226 Difference]: Without dead ends: 86810 [2022-07-13 18:29:30,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:29:30,493 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 672 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:30,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1990 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:30,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86810 states. [2022-07-13 18:29:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86810 to 86808. [2022-07-13 18:29:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86808 states, 86807 states have (on average 1.629292568571659) internal successors, (141434), 86807 states have internal predecessors, (141434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86808 states to 86808 states and 141434 transitions. [2022-07-13 18:29:33,428 INFO L78 Accepts]: Start accepts. Automaton has 86808 states and 141434 transitions. Word has length 140 [2022-07-13 18:29:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:33,428 INFO L495 AbstractCegarLoop]: Abstraction has 86808 states and 141434 transitions. [2022-07-13 18:29:33,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 86808 states and 141434 transitions. [2022-07-13 18:29:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 18:29:33,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:33,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:29:33,430 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1347255107, now seen corresponding path program 1 times [2022-07-13 18:29:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:33,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726042568] [2022-07-13 18:29:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:33,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:33,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726042568] [2022-07-13 18:29:33,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726042568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:33,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:33,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:29:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789521796] [2022-07-13 18:29:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:33,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:29:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:29:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:29:33,609 INFO L87 Difference]: Start difference. First operand 86808 states and 141434 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:38,485 INFO L93 Difference]: Finished difference Result 253786 states and 413914 transitions. [2022-07-13 18:29:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:29:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-07-13 18:29:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:38,799 INFO L225 Difference]: With dead ends: 253786 [2022-07-13 18:29:38,799 INFO L226 Difference]: Without dead ends: 167224 [2022-07-13 18:29:38,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:29:38,869 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 494 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:38,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2001 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167224 states. [2022-07-13 18:29:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167224 to 167222. [2022-07-13 18:29:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167222 states, 167221 states have (on average 1.6197427356611909) internal successors, (270855), 167221 states have internal predecessors, (270855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167222 states to 167222 states and 270855 transitions. [2022-07-13 18:29:45,145 INFO L78 Accepts]: Start accepts. Automaton has 167222 states and 270855 transitions. Word has length 143 [2022-07-13 18:29:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:45,146 INFO L495 AbstractCegarLoop]: Abstraction has 167222 states and 270855 transitions. [2022-07-13 18:29:45,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:29:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 167222 states and 270855 transitions. [2022-07-13 18:29:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 18:29:45,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:45,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:29:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:29:45,149 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 753419399, now seen corresponding path program 1 times [2022-07-13 18:29:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:45,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731003803] [2022-07-13 18:29:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:29:45,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:45,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731003803] [2022-07-13 18:29:45,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731003803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:45,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:45,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:29:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049342322] [2022-07-13 18:29:45,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:45,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:29:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:45,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:29:45,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:29:45,299 INFO L87 Difference]: Start difference. First operand 167222 states and 270855 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)