./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label55.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 892d3c9e0b7c167d810581087b0633fb7bb5cd8a7fe1ab934154adc1945085ff --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:14:04,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:14:04,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:14:04,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:14:04,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:14:04,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:14:04,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:14:04,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:14:04,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:14:04,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:14:04,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:14:04,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:14:04,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:14:04,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:14:04,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:14:04,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:14:04,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:14:04,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:14:04,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:14:04,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:14:04,919 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:14:04,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:14:04,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:14:04,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:14:04,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:14:04,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:14:04,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:14:04,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:14:04,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:14:04,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:14:04,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:14:04,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:14:04,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:14:04,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:14:04,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:14:04,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:14:04,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:14:04,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:14:04,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:14:04,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:14:04,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:14:04,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:14:04,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:14:04,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:14:04,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:14:04,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:14:04,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:14:04,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:14:04,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:14:04,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:14:04,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:14:04,959 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:14:04,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:14:04,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:14:04,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:14:04,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:14:04,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:14:04,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:14:04,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:14:04,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:14:04,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:14:04,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:14:04,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:14:04,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:14:04,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:14:04,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:14:04,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:14:04,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:14:04,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:14:04,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:14:04,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:14:04,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:14:04,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:14:04,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:14:04,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:14:04,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:14:04,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 892d3c9e0b7c167d810581087b0633fb7bb5cd8a7fe1ab934154adc1945085ff [2022-07-19 11:14:05,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:14:05,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:14:05,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:14:05,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:14:05,230 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:14:05,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2022-07-19 11:14:05,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684b6a363/9a3fc883fd1b41948c96ddd61c445853/FLAG9e33286b5 [2022-07-19 11:14:05,851 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:14:05,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2022-07-19 11:14:05,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684b6a363/9a3fc883fd1b41948c96ddd61c445853/FLAG9e33286b5 [2022-07-19 11:14:06,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684b6a363/9a3fc883fd1b41948c96ddd61c445853 [2022-07-19 11:14:06,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:14:06,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:14:06,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:14:06,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:14:06,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:14:06,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:06,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4323c517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06, skipping insertion in model container [2022-07-19 11:14:06,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:06,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:14:06,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:14:06,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c[56086,56099] [2022-07-19 11:14:06,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:14:06,751 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:14:06,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c[56086,56099] [2022-07-19 11:14:06,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:14:06,953 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:14:06,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06 WrapperNode [2022-07-19 11:14:06,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:14:06,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:14:06,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:14:06,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:14:06,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:06,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,065 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-19 11:14:07,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:14:07,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:14:07,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:14:07,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:14:07,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:14:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:14:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:14:07,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:14:07,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (1/1) ... [2022-07-19 11:14:07,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:14:07,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:07,233 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) [2022-07-19 11:14:07,254 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 [2022-07-19 11:14:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:14:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:14:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:14:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:14:07,358 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:14:07,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:14:08,757 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:14:08,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:14:08,769 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:14:08,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:14:08 BoogieIcfgContainer [2022-07-19 11:14:08,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:14:08,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:14:08,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:14:08,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:14:08,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:14:06" (1/3) ... [2022-07-19 11:14:08,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf3576f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:14:08, skipping insertion in model container [2022-07-19 11:14:08,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:14:06" (2/3) ... [2022-07-19 11:14:08,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf3576f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:14:08, skipping insertion in model container [2022-07-19 11:14:08,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:14:08" (3/3) ... [2022-07-19 11:14:08,792 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2022-07-19 11:14:08,804 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:14:08,805 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:14:08,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:14:08,876 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@6a2c652b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@172afe9c [2022-07-19 11:14:08,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:14:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 11:14:08,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:08,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:08,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:08,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:08,918 INFO L85 PathProgramCache]: Analyzing trace with hash -317002646, now seen corresponding path program 1 times [2022-07-19 11:14:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741429164] [2022-07-19 11:14:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:08,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:09,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741429164] [2022-07-19 11:14:09,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741429164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:09,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191079845] [2022-07-19 11:14:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:09,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:09,491 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:10,484 INFO L93 Difference]: Finished difference Result 843 states and 1493 transitions. [2022-07-19 11:14:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:10,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-07-19 11:14:10,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:10,504 INFO L225 Difference]: With dead ends: 843 [2022-07-19 11:14:10,504 INFO L226 Difference]: Without dead ends: 463 [2022-07-19 11:14:10,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:10,514 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 112 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:10,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 121 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:14:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-19 11:14:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-07-19 11:14:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6339285714285714) internal successors, (732), 448 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 732 transitions. [2022-07-19 11:14:10,585 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 732 transitions. Word has length 162 [2022-07-19 11:14:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:10,586 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 732 transitions. [2022-07-19 11:14:10,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 732 transitions. [2022-07-19 11:14:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:14:10,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:10,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:14:10,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash 331981558, now seen corresponding path program 1 times [2022-07-19 11:14:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:10,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843225709] [2022-07-19 11:14:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:10,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:10,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843225709] [2022-07-19 11:14:10,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843225709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:10,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:10,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:10,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188232518] [2022-07-19 11:14:10,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:10,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:10,685 INFO L87 Difference]: Start difference. First operand 449 states and 732 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:11,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:11,433 INFO L93 Difference]: Finished difference Result 1333 states and 2180 transitions. [2022-07-19 11:14:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:11,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-07-19 11:14:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:11,438 INFO L225 Difference]: With dead ends: 1333 [2022-07-19 11:14:11,438 INFO L226 Difference]: Without dead ends: 886 [2022-07-19 11:14:11,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:11,440 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:11,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 114 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-07-19 11:14:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2022-07-19 11:14:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.6163450624290578) internal successors, (1424), 881 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1424 transitions. [2022-07-19 11:14:11,467 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1424 transitions. Word has length 168 [2022-07-19 11:14:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:11,468 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1424 transitions. [2022-07-19 11:14:11,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1424 transitions. [2022-07-19 11:14:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:14:11,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:11,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:14:11,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:11,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1835334450, now seen corresponding path program 1 times [2022-07-19 11:14:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:11,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114332334] [2022-07-19 11:14:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:11,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:11,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114332334] [2022-07-19 11:14:11,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114332334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:11,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:11,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:11,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756798208] [2022-07-19 11:14:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:11,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:11,606 INFO L87 Difference]: Start difference. First operand 882 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:12,319 INFO L93 Difference]: Finished difference Result 2575 states and 4172 transitions. [2022-07-19 11:14:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-07-19 11:14:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:12,332 INFO L225 Difference]: With dead ends: 2575 [2022-07-19 11:14:12,333 INFO L226 Difference]: Without dead ends: 1695 [2022-07-19 11:14:12,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:12,335 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:12,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 192 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-07-19 11:14:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2022-07-19 11:14:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.3984651711924438) internal successors, (2369), 1694 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2369 transitions. [2022-07-19 11:14:12,371 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2369 transitions. Word has length 168 [2022-07-19 11:14:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:12,371 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2369 transitions. [2022-07-19 11:14:12,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2369 transitions. [2022-07-19 11:14:12,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-19 11:14:12,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:12,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:12,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:14:12,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:12,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:12,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1871241535, now seen corresponding path program 1 times [2022-07-19 11:14:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:12,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375625711] [2022-07-19 11:14:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:12,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:12,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375625711] [2022-07-19 11:14:12,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375625711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:12,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:12,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889087558] [2022-07-19 11:14:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:12,484 INFO L87 Difference]: Start difference. First operand 1695 states and 2369 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:13,213 INFO L93 Difference]: Finished difference Result 5062 states and 7081 transitions. [2022-07-19 11:14:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-07-19 11:14:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:13,227 INFO L225 Difference]: With dead ends: 5062 [2022-07-19 11:14:13,228 INFO L226 Difference]: Without dead ends: 3369 [2022-07-19 11:14:13,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:13,239 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 216 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2022-07-19 11:14:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3360. [2022-07-19 11:14:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 1.3846382852039298) internal successors, (4651), 3359 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4651 transitions. [2022-07-19 11:14:13,322 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4651 transitions. Word has length 174 [2022-07-19 11:14:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:13,322 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 4651 transitions. [2022-07-19 11:14:13,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4651 transitions. [2022-07-19 11:14:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 11:14:13,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:13,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:13,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:14:13,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash 962684326, now seen corresponding path program 1 times [2022-07-19 11:14:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:13,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294654748] [2022-07-19 11:14:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:13,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:13,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294654748] [2022-07-19 11:14:13,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294654748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:13,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:13,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231478131] [2022-07-19 11:14:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:13,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:13,390 INFO L87 Difference]: Start difference. First operand 3360 states and 4651 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:14,164 INFO L93 Difference]: Finished difference Result 10006 states and 13851 transitions. [2022-07-19 11:14:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-07-19 11:14:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:14,187 INFO L225 Difference]: With dead ends: 10006 [2022-07-19 11:14:14,188 INFO L226 Difference]: Without dead ends: 6648 [2022-07-19 11:14:14,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:14,216 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:14,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 224 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2022-07-19 11:14:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 6641. [2022-07-19 11:14:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6641 states, 6640 states have (on average 1.3284638554216868) internal successors, (8821), 6640 states have internal predecessors, (8821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6641 states to 6641 states and 8821 transitions. [2022-07-19 11:14:14,324 INFO L78 Accepts]: Start accepts. Automaton has 6641 states and 8821 transitions. Word has length 175 [2022-07-19 11:14:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:14,324 INFO L495 AbstractCegarLoop]: Abstraction has 6641 states and 8821 transitions. [2022-07-19 11:14:14,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6641 states and 8821 transitions. [2022-07-19 11:14:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 11:14:14,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:14,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:14,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:14:14,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1968582037, now seen corresponding path program 1 times [2022-07-19 11:14:14,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:14,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35681696] [2022-07-19 11:14:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 11:14:14,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:14,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35681696] [2022-07-19 11:14:14,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35681696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:14,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:14,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:14,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686712738] [2022-07-19 11:14:14,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:14,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:14,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:14,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:14,395 INFO L87 Difference]: Start difference. First operand 6641 states and 8821 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:15,164 INFO L93 Difference]: Finished difference Result 18403 states and 24736 transitions. [2022-07-19 11:14:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:15,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 176 [2022-07-19 11:14:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:15,214 INFO L225 Difference]: With dead ends: 18403 [2022-07-19 11:14:15,214 INFO L226 Difference]: Without dead ends: 12170 [2022-07-19 11:14:15,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:15,226 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:15,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:15,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2022-07-19 11:14:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 12127. [2022-07-19 11:14:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12127 states, 12126 states have (on average 1.318489196767277) internal successors, (15988), 12126 states have internal predecessors, (15988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12127 states to 12127 states and 15988 transitions. [2022-07-19 11:14:15,546 INFO L78 Accepts]: Start accepts. Automaton has 12127 states and 15988 transitions. Word has length 176 [2022-07-19 11:14:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:15,546 INFO L495 AbstractCegarLoop]: Abstraction has 12127 states and 15988 transitions. [2022-07-19 11:14:15,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 12127 states and 15988 transitions. [2022-07-19 11:14:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-19 11:14:15,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:15,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:15,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:14:15,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:15,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2124767808, now seen corresponding path program 1 times [2022-07-19 11:14:15,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:15,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278650905] [2022-07-19 11:14:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:15,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:15,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278650905] [2022-07-19 11:14:15,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278650905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:15,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:15,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715989003] [2022-07-19 11:14:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:15,652 INFO L87 Difference]: Start difference. First operand 12127 states and 15988 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:16,540 INFO L93 Difference]: Finished difference Result 31583 states and 42424 transitions. [2022-07-19 11:14:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:16,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 183 [2022-07-19 11:14:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:16,587 INFO L225 Difference]: With dead ends: 31583 [2022-07-19 11:14:16,587 INFO L226 Difference]: Without dead ends: 19864 [2022-07-19 11:14:16,604 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 [2022-07-19 11:14:16,606 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 218 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:16,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 362 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19864 states. [2022-07-19 11:14:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19864 to 19854. [2022-07-19 11:14:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19854 states, 19853 states have (on average 1.279806578350879) internal successors, (25408), 19853 states have internal predecessors, (25408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19854 states to 19854 states and 25408 transitions. [2022-07-19 11:14:17,088 INFO L78 Accepts]: Start accepts. Automaton has 19854 states and 25408 transitions. Word has length 183 [2022-07-19 11:14:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:17,088 INFO L495 AbstractCegarLoop]: Abstraction has 19854 states and 25408 transitions. [2022-07-19 11:14:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19854 states and 25408 transitions. [2022-07-19 11:14:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 11:14:17,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:17,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:17,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:14:17,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1144319502, now seen corresponding path program 1 times [2022-07-19 11:14:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:17,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277279312] [2022-07-19 11:14:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:17,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277279312] [2022-07-19 11:14:17,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277279312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:17,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:17,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397645854] [2022-07-19 11:14:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:17,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:17,205 INFO L87 Difference]: Start difference. First operand 19854 states and 25408 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:18,310 INFO L93 Difference]: Finished difference Result 45523 states and 58726 transitions. [2022-07-19 11:14:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2022-07-19 11:14:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:18,367 INFO L225 Difference]: With dead ends: 45523 [2022-07-19 11:14:18,367 INFO L226 Difference]: Without dead ends: 26077 [2022-07-19 11:14:18,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:18,390 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 563 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:18,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 53 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:14:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26077 states. [2022-07-19 11:14:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26077 to 26068. [2022-07-19 11:14:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26068 states, 26067 states have (on average 1.2348946944412476) internal successors, (32190), 26067 states have internal predecessors, (32190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26068 states to 26068 states and 32190 transitions. [2022-07-19 11:14:19,017 INFO L78 Accepts]: Start accepts. Automaton has 26068 states and 32190 transitions. Word has length 187 [2022-07-19 11:14:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:19,017 INFO L495 AbstractCegarLoop]: Abstraction has 26068 states and 32190 transitions. [2022-07-19 11:14:19,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 26068 states and 32190 transitions. [2022-07-19 11:14:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 11:14:19,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:19,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:19,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:14:19,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -496785840, now seen corresponding path program 1 times [2022-07-19 11:14:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:19,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345246000] [2022-07-19 11:14:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:19,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:19,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345246000] [2022-07-19 11:14:19,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345246000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:19,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:19,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330010868] [2022-07-19 11:14:19,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:19,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:19,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:19,124 INFO L87 Difference]: Start difference. First operand 26068 states and 32190 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:20,218 INFO L93 Difference]: Finished difference Result 67615 states and 83814 transitions. [2022-07-19 11:14:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2022-07-19 11:14:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:20,311 INFO L225 Difference]: With dead ends: 67615 [2022-07-19 11:14:20,311 INFO L226 Difference]: Without dead ends: 41955 [2022-07-19 11:14:20,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:20,347 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 207 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:20,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 108 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:14:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41955 states. [2022-07-19 11:14:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41955 to 41940. [2022-07-19 11:14:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41940 states, 41939 states have (on average 1.2147643005317246) internal successors, (50946), 41939 states have internal predecessors, (50946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41940 states to 41940 states and 50946 transitions. [2022-07-19 11:14:21,031 INFO L78 Accepts]: Start accepts. Automaton has 41940 states and 50946 transitions. Word has length 190 [2022-07-19 11:14:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:21,032 INFO L495 AbstractCegarLoop]: Abstraction has 41940 states and 50946 transitions. [2022-07-19 11:14:21,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 41940 states and 50946 transitions. [2022-07-19 11:14:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-19 11:14:21,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:21,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:21,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:14:21,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash -99342165, now seen corresponding path program 1 times [2022-07-19 11:14:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:21,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140267029] [2022-07-19 11:14:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:21,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140267029] [2022-07-19 11:14:21,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140267029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:21,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:21,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148986339] [2022-07-19 11:14:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:21,160 INFO L87 Difference]: Start difference. First operand 41940 states and 50946 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:22,355 INFO L93 Difference]: Finished difference Result 98164 states and 120488 transitions. [2022-07-19 11:14:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:22,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-07-19 11:14:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:22,454 INFO L225 Difference]: With dead ends: 98164 [2022-07-19 11:14:22,455 INFO L226 Difference]: Without dead ends: 57241 [2022-07-19 11:14:22,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:22,490 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 202 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:22,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 180 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57241 states. [2022-07-19 11:14:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57241 to 57213. [2022-07-19 11:14:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57213 states, 57212 states have (on average 1.2304411661889114) internal successors, (70396), 57212 states have internal predecessors, (70396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57213 states to 57213 states and 70396 transitions. [2022-07-19 11:14:23,694 INFO L78 Accepts]: Start accepts. Automaton has 57213 states and 70396 transitions. Word has length 192 [2022-07-19 11:14:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:23,694 INFO L495 AbstractCegarLoop]: Abstraction has 57213 states and 70396 transitions. [2022-07-19 11:14:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 57213 states and 70396 transitions. [2022-07-19 11:14:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-19 11:14:23,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:23,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:14:23,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 305930593, now seen corresponding path program 1 times [2022-07-19 11:14:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:23,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516455803] [2022-07-19 11:14:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:23,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516455803] [2022-07-19 11:14:23,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516455803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:23,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:23,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331492705] [2022-07-19 11:14:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:23,801 INFO L87 Difference]: Start difference. First operand 57213 states and 70396 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:24,966 INFO L93 Difference]: Finished difference Result 137641 states and 169699 transitions. [2022-07-19 11:14:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2022-07-19 11:14:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:25,239 INFO L225 Difference]: With dead ends: 137641 [2022-07-19 11:14:25,239 INFO L226 Difference]: Without dead ends: 81445 [2022-07-19 11:14:25,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:25,276 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 226 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:25,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 164 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:14:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81445 states. [2022-07-19 11:14:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81445 to 81441. [2022-07-19 11:14:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81441 states, 81440 states have (on average 1.231630648330059) internal successors, (100304), 81440 states have internal predecessors, (100304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81441 states to 81441 states and 100304 transitions. [2022-07-19 11:14:26,587 INFO L78 Accepts]: Start accepts. Automaton has 81441 states and 100304 transitions. Word has length 196 [2022-07-19 11:14:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:26,594 INFO L495 AbstractCegarLoop]: Abstraction has 81441 states and 100304 transitions. [2022-07-19 11:14:26,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 81441 states and 100304 transitions. [2022-07-19 11:14:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-19 11:14:26,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:26,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:26,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:14:26,620 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2091308555, now seen corresponding path program 1 times [2022-07-19 11:14:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:26,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033641752] [2022-07-19 11:14:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:26,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033641752] [2022-07-19 11:14:26,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033641752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:26,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:26,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:26,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556098217] [2022-07-19 11:14:26,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:26,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:26,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:26,724 INFO L87 Difference]: Start difference. First operand 81441 states and 100304 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:28,277 INFO L93 Difference]: Finished difference Result 206240 states and 254661 transitions. [2022-07-19 11:14:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:28,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 207 [2022-07-19 11:14:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:28,493 INFO L225 Difference]: With dead ends: 206240 [2022-07-19 11:14:28,494 INFO L226 Difference]: Without dead ends: 125816 [2022-07-19 11:14:28,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:28,571 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 546 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:28,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 476 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125816 states. [2022-07-19 11:14:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125816 to 125596. [2022-07-19 11:14:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125596 states, 125595 states have (on average 1.217588279788208) internal successors, (152923), 125595 states have internal predecessors, (152923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125596 states to 125596 states and 152923 transitions. [2022-07-19 11:14:30,487 INFO L78 Accepts]: Start accepts. Automaton has 125596 states and 152923 transitions. Word has length 207 [2022-07-19 11:14:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 125596 states and 152923 transitions. [2022-07-19 11:14:30,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 125596 states and 152923 transitions. [2022-07-19 11:14:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 11:14:30,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:30,535 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:30,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:14:30,536 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash -254767863, now seen corresponding path program 1 times [2022-07-19 11:14:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:30,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705868443] [2022-07-19 11:14:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 11:14:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:30,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705868443] [2022-07-19 11:14:30,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705868443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:30,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:30,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37372386] [2022-07-19 11:14:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:30,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:30,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:30,622 INFO L87 Difference]: Start difference. First operand 125596 states and 152923 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:32,042 INFO L93 Difference]: Finished difference Result 217962 states and 268207 transitions. [2022-07-19 11:14:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:32,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2022-07-19 11:14:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:32,162 INFO L225 Difference]: With dead ends: 217962 [2022-07-19 11:14:32,163 INFO L226 Difference]: Without dead ends: 94810 [2022-07-19 11:14:32,235 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 [2022-07-19 11:14:32,236 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 171 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:32,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 370 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:14:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94810 states. [2022-07-19 11:14:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94810 to 88914. [2022-07-19 11:14:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88914 states, 88913 states have (on average 1.1646440902905086) internal successors, (103552), 88913 states have internal predecessors, (103552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88914 states to 88914 states and 103552 transitions. [2022-07-19 11:14:33,886 INFO L78 Accepts]: Start accepts. Automaton has 88914 states and 103552 transitions. Word has length 228 [2022-07-19 11:14:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:33,886 INFO L495 AbstractCegarLoop]: Abstraction has 88914 states and 103552 transitions. [2022-07-19 11:14:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 88914 states and 103552 transitions. [2022-07-19 11:14:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-19 11:14:33,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:33,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:33,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:14:33,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -621277898, now seen corresponding path program 1 times [2022-07-19 11:14:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:33,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601771477] [2022-07-19 11:14:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:34,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601771477] [2022-07-19 11:14:34,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601771477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:34,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:34,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372770929] [2022-07-19 11:14:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:34,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:34,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:34,034 INFO L87 Difference]: Start difference. First operand 88914 states and 103552 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:35,239 INFO L93 Difference]: Finished difference Result 168059 states and 195531 transitions. [2022-07-19 11:14:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:35,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2022-07-19 11:14:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:35,342 INFO L225 Difference]: With dead ends: 168059 [2022-07-19 11:14:35,342 INFO L226 Difference]: Without dead ends: 88711 [2022-07-19 11:14:35,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:35,369 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:35,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 150 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88711 states. [2022-07-19 11:14:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88711 to 88711. [2022-07-19 11:14:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88711 states, 88710 states have (on average 1.1647503099988727) internal successors, (103325), 88710 states have internal predecessors, (103325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88711 states to 88711 states and 103325 transitions. [2022-07-19 11:14:36,644 INFO L78 Accepts]: Start accepts. Automaton has 88711 states and 103325 transitions. Word has length 236 [2022-07-19 11:14:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:36,645 INFO L495 AbstractCegarLoop]: Abstraction has 88711 states and 103325 transitions. [2022-07-19 11:14:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 88711 states and 103325 transitions. [2022-07-19 11:14:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-19 11:14:36,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:36,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:14:36,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash -805026293, now seen corresponding path program 1 times [2022-07-19 11:14:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:36,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685331074] [2022-07-19 11:14:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:36,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:36,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685331074] [2022-07-19 11:14:36,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685331074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:36,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:36,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096360952] [2022-07-19 11:14:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:36,826 INFO L87 Difference]: Start difference. First operand 88711 states and 103325 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:38,448 INFO L93 Difference]: Finished difference Result 170141 states and 198635 transitions. [2022-07-19 11:14:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:38,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2022-07-19 11:14:38,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:38,573 INFO L225 Difference]: With dead ends: 170141 [2022-07-19 11:14:38,573 INFO L226 Difference]: Without dead ends: 96485 [2022-07-19 11:14:38,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:38,620 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 360 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:38,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 114 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:14:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96485 states. [2022-07-19 11:14:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96485 to 93399. [2022-07-19 11:14:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93399 states, 93398 states have (on average 1.1642005182123814) internal successors, (108734), 93398 states have internal predecessors, (108734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93399 states to 93399 states and 108734 transitions. [2022-07-19 11:14:39,936 INFO L78 Accepts]: Start accepts. Automaton has 93399 states and 108734 transitions. Word has length 264 [2022-07-19 11:14:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:39,937 INFO L495 AbstractCegarLoop]: Abstraction has 93399 states and 108734 transitions. [2022-07-19 11:14:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 93399 states and 108734 transitions. [2022-07-19 11:14:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-19 11:14:39,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:39,966 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:39,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:14:39,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:39,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1682192666, now seen corresponding path program 1 times [2022-07-19 11:14:39,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:39,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671841827] [2022-07-19 11:14:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:39,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 11:14:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:40,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671841827] [2022-07-19 11:14:40,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671841827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:40,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:40,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123594731] [2022-07-19 11:14:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:40,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:40,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:40,091 INFO L87 Difference]: Start difference. First operand 93399 states and 108734 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:41,381 INFO L93 Difference]: Finished difference Result 185792 states and 216123 transitions. [2022-07-19 11:14:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 284 [2022-07-19 11:14:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:41,484 INFO L225 Difference]: With dead ends: 185792 [2022-07-19 11:14:41,484 INFO L226 Difference]: Without dead ends: 85702 [2022-07-19 11:14:41,544 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 [2022-07-19 11:14:41,545 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 163 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:41,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 375 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:14:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85702 states. [2022-07-19 11:14:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85702 to 67382. [2022-07-19 11:14:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67382 states, 67381 states have (on average 1.1146465620872352) internal successors, (75106), 67381 states have internal predecessors, (75106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67382 states to 67382 states and 75106 transitions. [2022-07-19 11:14:42,642 INFO L78 Accepts]: Start accepts. Automaton has 67382 states and 75106 transitions. Word has length 284 [2022-07-19 11:14:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:42,643 INFO L495 AbstractCegarLoop]: Abstraction has 67382 states and 75106 transitions. [2022-07-19 11:14:42,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 67382 states and 75106 transitions. [2022-07-19 11:14:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-19 11:14:42,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:42,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:14:42,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1771235932, now seen corresponding path program 1 times [2022-07-19 11:14:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:42,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268534655] [2022-07-19 11:14:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:42,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268534655] [2022-07-19 11:14:42,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268534655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:42,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:42,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 11:14:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282377495] [2022-07-19 11:14:42,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:42,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:42,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:42,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:42,824 INFO L87 Difference]: Start difference. First operand 67382 states and 75106 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:43,673 INFO L93 Difference]: Finished difference Result 129072 states and 143708 transitions. [2022-07-19 11:14:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:43,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2022-07-19 11:14:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:43,754 INFO L225 Difference]: With dead ends: 129072 [2022-07-19 11:14:43,754 INFO L226 Difference]: Without dead ends: 69224 [2022-07-19 11:14:43,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:14:43,796 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 85 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:43,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 110 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69224 states. [2022-07-19 11:14:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69224 to 69006. [2022-07-19 11:14:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69006 states, 69005 states have (on average 1.1108180566625607) internal successors, (76652), 69005 states have internal predecessors, (76652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69006 states to 69006 states and 76652 transitions. [2022-07-19 11:14:44,901 INFO L78 Accepts]: Start accepts. Automaton has 69006 states and 76652 transitions. Word has length 292 [2022-07-19 11:14:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:44,902 INFO L495 AbstractCegarLoop]: Abstraction has 69006 states and 76652 transitions. [2022-07-19 11:14:44,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 69006 states and 76652 transitions. [2022-07-19 11:14:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-19 11:14:44,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:44,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:14:44,920 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2012492047, now seen corresponding path program 1 times [2022-07-19 11:14:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:44,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279410584] [2022-07-19 11:14:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:14:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:45,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279410584] [2022-07-19 11:14:45,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279410584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734350843] [2022-07-19 11:14:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:45,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:45,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:45,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:14:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:45,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-19 11:14:46,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:46,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734350843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:46,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:46,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-07-19 11:14:46,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296937709] [2022-07-19 11:14:46,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 11:14:46,142 INFO L87 Difference]: Start difference. First operand 69006 states and 76652 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:47,027 INFO L93 Difference]: Finished difference Result 156757 states and 175249 transitions. [2022-07-19 11:14:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:47,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 294 [2022-07-19 11:14:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:47,125 INFO L225 Difference]: With dead ends: 156757 [2022-07-19 11:14:47,126 INFO L226 Difference]: Without dead ends: 88770 [2022-07-19 11:14:47,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 11:14:47,171 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 93 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:47,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 88 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:14:47,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88770 states. [2022-07-19 11:14:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88770 to 86324. [2022-07-19 11:14:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86324 states, 86323 states have (on average 1.1125424278581606) internal successors, (96038), 86323 states have internal predecessors, (96038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86324 states to 86324 states and 96038 transitions. [2022-07-19 11:14:48,307 INFO L78 Accepts]: Start accepts. Automaton has 86324 states and 96038 transitions. Word has length 294 [2022-07-19 11:14:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:48,308 INFO L495 AbstractCegarLoop]: Abstraction has 86324 states and 96038 transitions. [2022-07-19 11:14:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 86324 states and 96038 transitions. [2022-07-19 11:14:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-19 11:14:48,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:48,323 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:48,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 11:14:48,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 11:14:48,525 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash 250008961, now seen corresponding path program 1 times [2022-07-19 11:14:48,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:48,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552293740] [2022-07-19 11:14:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:48,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-19 11:14:48,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:48,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552293740] [2022-07-19 11:14:48,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552293740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:48,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:14:48,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:14:48,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612958620] [2022-07-19 11:14:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:48,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:14:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:48,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:14:48,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:48,640 INFO L87 Difference]: Start difference. First operand 86324 states and 96038 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:50,088 INFO L93 Difference]: Finished difference Result 166607 states and 185364 transitions. [2022-07-19 11:14:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:14:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 300 [2022-07-19 11:14:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:50,192 INFO L225 Difference]: With dead ends: 166607 [2022-07-19 11:14:50,193 INFO L226 Difference]: Without dead ends: 87003 [2022-07-19 11:14:50,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:14:50,241 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 366 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:50,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 99 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:14:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87003 states. [2022-07-19 11:14:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87003 to 85309. [2022-07-19 11:14:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85309 states, 85308 states have (on average 1.1124513527453463) internal successors, (94901), 85308 states have internal predecessors, (94901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85309 states to 85309 states and 94901 transitions. [2022-07-19 11:14:51,557 INFO L78 Accepts]: Start accepts. Automaton has 85309 states and 94901 transitions. Word has length 300 [2022-07-19 11:14:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:51,557 INFO L495 AbstractCegarLoop]: Abstraction has 85309 states and 94901 transitions. [2022-07-19 11:14:51,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 85309 states and 94901 transitions. [2022-07-19 11:14:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-19 11:14:51,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:51,575 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:51,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:14:51,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1883543636, now seen corresponding path program 1 times [2022-07-19 11:14:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:51,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095894966] [2022-07-19 11:14:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:51,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 11:14:51,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095894966] [2022-07-19 11:14:51,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095894966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:51,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168220490] [2022-07-19 11:14:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:51,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:51,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:51,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 11:14:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:51,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 11:14:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 11:14:52,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:52,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168220490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:52,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:52,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2022-07-19 11:14:52,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851836559] [2022-07-19 11:14:52,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:52,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:14:52,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:14:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:14:52,137 INFO L87 Difference]: Start difference. First operand 85309 states and 94901 transitions. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:54,045 INFO L93 Difference]: Finished difference Result 227768 states and 252500 transitions. [2022-07-19 11:14:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 11:14:54,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 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 307 [2022-07-19 11:14:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:54,274 INFO L225 Difference]: With dead ends: 227768 [2022-07-19 11:14:54,274 INFO L226 Difference]: Without dead ends: 143478 [2022-07-19 11:14:54,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:14:54,319 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 876 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:54,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 571 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:14:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143478 states. [2022-07-19 11:14:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143478 to 131456. [2022-07-19 11:14:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131456 states, 131455 states have (on average 1.1081738998136244) internal successors, (145675), 131455 states have internal predecessors, (145675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131456 states to 131456 states and 145675 transitions. [2022-07-19 11:14:56,070 INFO L78 Accepts]: Start accepts. Automaton has 131456 states and 145675 transitions. Word has length 307 [2022-07-19 11:14:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:14:56,070 INFO L495 AbstractCegarLoop]: Abstraction has 131456 states and 145675 transitions. [2022-07-19 11:14:56,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 131456 states and 145675 transitions. [2022-07-19 11:14:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-19 11:14:56,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:14:56,083 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:14:56,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 11:14:56,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-19 11:14:56,285 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:14:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:14:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash -601397578, now seen corresponding path program 1 times [2022-07-19 11:14:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:14:56,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853096127] [2022-07-19 11:14:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:14:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:14:56,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:14:56,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853096127] [2022-07-19 11:14:56,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853096127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:14:56,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549830099] [2022-07-19 11:14:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:14:56,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:14:56,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:14:56,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:14:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 11:14:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:14:57,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:14:57,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:14:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-19 11:14:57,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:14:57,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549830099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:14:57,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:14:57,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:14:57,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751911996] [2022-07-19 11:14:57,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:14:57,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:14:57,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:14:57,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:14:57,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:57,253 INFO L87 Difference]: Start difference. First operand 131456 states and 145675 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:14:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:14:58,329 INFO L93 Difference]: Finished difference Result 257461 states and 285598 transitions. [2022-07-19 11:14:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:14:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 325 [2022-07-19 11:14:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:14:58,497 INFO L225 Difference]: With dead ends: 257461 [2022-07-19 11:14:58,497 INFO L226 Difference]: Without dead ends: 129667 [2022-07-19 11:14:58,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:14:58,604 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 69 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:14:58,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 116 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:14:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129667 states. [2022-07-19 11:15:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129667 to 127183. [2022-07-19 11:15:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127183 states, 127182 states have (on average 1.1046688996870626) internal successors, (140494), 127182 states have internal predecessors, (140494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:15:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127183 states to 127183 states and 140494 transitions. [2022-07-19 11:15:00,689 INFO L78 Accepts]: Start accepts. Automaton has 127183 states and 140494 transitions. Word has length 325 [2022-07-19 11:15:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:15:00,690 INFO L495 AbstractCegarLoop]: Abstraction has 127183 states and 140494 transitions. [2022-07-19 11:15:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:15:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 127183 states and 140494 transitions. [2022-07-19 11:15:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-07-19 11:15:00,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:15:00,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:15:00,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 11:15:00,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:15:00,905 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:15:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:15:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash -894238348, now seen corresponding path program 1 times [2022-07-19 11:15:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:15:00,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885303058] [2022-07-19 11:15:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:15:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:15:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:15:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-19 11:15:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:15:01,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885303058] [2022-07-19 11:15:01,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885303058] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:15:01,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119090331] [2022-07-19 11:15:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:15:01,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:15:01,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:15:01,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:15:01,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 11:15:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:15:01,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:15:01,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:15:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:15:01,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:15:01,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119090331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:15:01,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:15:01,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-19 11:15:01,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10295760] [2022-07-19 11:15:01,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:15:01,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:15:01,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:15:01,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:15:01,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:15:01,369 INFO L87 Difference]: Start difference. First operand 127183 states and 140494 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:15:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:15:02,842 INFO L93 Difference]: Finished difference Result 252999 states and 279486 transitions. [2022-07-19 11:15:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:15:02,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 336 [2022-07-19 11:15:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:15:03,004 INFO L225 Difference]: With dead ends: 252999 [2022-07-19 11:15:03,004 INFO L226 Difference]: Without dead ends: 126021 [2022-07-19 11:15:03,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:15:03,049 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 61 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:15:03,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 306 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:15:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126021 states.