./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.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 8d6ab270424ffa2caaf27b7ac8ad862ff93b45999f126eddc180d440bd9f4c92 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:26:28,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:26:28,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:26:28,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:26:28,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:26:28,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:26:28,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:26:28,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:26:28,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:26:28,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:26:28,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:26:28,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:26:28,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:26:28,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:26:28,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:26:28,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:26:28,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:26:28,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:26:28,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:26:28,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:26:28,974 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:26:28,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:26:28,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:26:28,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:26:28,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:26:28,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:26:28,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:26:28,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:26:28,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:26:28,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:26:28,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:26:28,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:26:28,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:26:28,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:26:28,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:26:28,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:26:28,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:26:28,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:26:28,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:26:28,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:26:28,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:26:28,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:26:28,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:26:29,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:26:29,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:26:29,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:26:29,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:26:29,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:26:29,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:26:29,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:26:29,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:26:29,027 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:26:29,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:26:29,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:26:29,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:26:29,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:26:29,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:26:29,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:26:29,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:26:29,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:26:29,029 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:26:29,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:26:29,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:26:29,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:26:29,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:26:29,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:26:29,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:26:29,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:26:29,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:26:29,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:26:29,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:26:29,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:26:29,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:26:29,033 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:26:29,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:26:29,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:26:29,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d6ab270424ffa2caaf27b7ac8ad862ff93b45999f126eddc180d440bd9f4c92 [2022-07-19 20:26:29,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:26:29,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:26:29,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:26:29,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:26:29,275 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:26:29,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2022-07-19 20:26:29,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86ea0dad/a77b9e482594475cbbe1077cbae1610a/FLAG25b6fac27 [2022-07-19 20:26:30,028 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:26:30,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2022-07-19 20:26:30,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86ea0dad/a77b9e482594475cbbe1077cbae1610a/FLAG25b6fac27 [2022-07-19 20:26:30,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86ea0dad/a77b9e482594475cbbe1077cbae1610a [2022-07-19 20:26:30,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:26:30,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:26:30,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:26:30,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:26:30,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:26:30,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:26:30" (1/1) ... [2022-07-19 20:26:30,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4216b4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:30, skipping insertion in model container [2022-07-19 20:26:30,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:26:30" (1/1) ... [2022-07-19 20:26:30,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:26:30,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:26:30,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[26860,26873] [2022-07-19 20:26:30,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[30367,30380] [2022-07-19 20:26:31,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:26:31,299 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:26:31,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[26860,26873] [2022-07-19 20:26:31,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[30367,30380] [2022-07-19 20:26:31,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:26:31,739 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:26:31,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31 WrapperNode [2022-07-19 20:26:31,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:26:31,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:26:31,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:26:31,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:26:31,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:31,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,137 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2022-07-19 20:26:32,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:26:32,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:26:32,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:26:32,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:26:32,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:26:32,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:26:32,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:26:32,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:26:32,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (1/1) ... [2022-07-19 20:26:32,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:26:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:26:32,593 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 20:26:32,636 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 20:26:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:26:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:26:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:26:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:26:32,888 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:26:32,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:26:36,289 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:26:36,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:26:36,304 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:26:36,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:26:36 BoogieIcfgContainer [2022-07-19 20:26:36,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:26:36,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:26:36,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:26:36,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:26:36,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:26:30" (1/3) ... [2022-07-19 20:26:36,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402372a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:26:36, skipping insertion in model container [2022-07-19 20:26:36,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:26:31" (2/3) ... [2022-07-19 20:26:36,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402372a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:26:36, skipping insertion in model container [2022-07-19 20:26:36,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:26:36" (3/3) ... [2022-07-19 20:26:36,314 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2022-07-19 20:26:36,326 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:26:36,326 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:26:36,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:26:36,387 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@7b8baa29, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e5a9b52 [2022-07-19 20:26:36,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:26:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states 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 20:26:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 20:26:36,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:36,402 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] [2022-07-19 20:26:36,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1701875667, now seen corresponding path program 1 times [2022-07-19 20:26:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:36,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964233293] [2022-07-19 20:26:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:36,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:36,660 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 20:26:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:36,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964233293] [2022-07-19 20:26:36,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964233293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:36,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:36,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:26:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743344925] [2022-07-19 20:26:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:36,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:36,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:36,691 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 20:26:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:40,252 INFO L93 Difference]: Finished difference Result 2614 states and 5014 transitions. [2022-07-19 20:26:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:40,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-07-19 20:26:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:40,275 INFO L225 Difference]: With dead ends: 2614 [2022-07-19 20:26:40,275 INFO L226 Difference]: Without dead ends: 1648 [2022-07-19 20:26:40,282 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 20:26:40,285 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1059 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:40,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 366 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 20:26:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-19 20:26:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-19 20:26:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.8572296476306196) internal successors, (3057), 1647 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states 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 20:26:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 3057 transitions. [2022-07-19 20:26:40,394 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 3057 transitions. Word has length 30 [2022-07-19 20:26:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:40,395 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 3057 transitions. [2022-07-19 20:26:40,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 20:26:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 3057 transitions. [2022-07-19 20:26:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 20:26:40,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:40,401 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] [2022-07-19 20:26:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:26:40,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2022-07-19 20:26:40,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:40,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717686333] [2022-07-19 20:26:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:40,501 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 20:26:40,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:40,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717686333] [2022-07-19 20:26:40,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717686333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:40,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:40,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:26:40,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626662130] [2022-07-19 20:26:40,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:40,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:26:40,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:40,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:26:40,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:26:40,505 INFO L87 Difference]: Start difference. First operand 1648 states and 3057 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 20:26:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:40,590 INFO L93 Difference]: Finished difference Result 1728 states and 3182 transitions. [2022-07-19 20:26:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:26:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-19 20:26:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:40,597 INFO L225 Difference]: With dead ends: 1728 [2022-07-19 20:26:40,597 INFO L226 Difference]: Without dead ends: 1648 [2022-07-19 20:26:40,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:26:40,605 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:40,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-19 20:26:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-19 20:26:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.8201701093560145) internal successors, (2996), 1647 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states 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 20:26:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2996 transitions. [2022-07-19 20:26:40,643 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2996 transitions. Word has length 46 [2022-07-19 20:26:40,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:40,643 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2996 transitions. [2022-07-19 20:26:40,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 20:26:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2996 transitions. [2022-07-19 20:26:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:26:40,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:40,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:26:40,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1580122138, now seen corresponding path program 1 times [2022-07-19 20:26:40,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:40,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639184117] [2022-07-19 20:26:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:40,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:26:40,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:40,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639184117] [2022-07-19 20:26:40,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639184117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:40,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:40,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328810512] [2022-07-19 20:26:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:40,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:26:40,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:26:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:26:40,811 INFO L87 Difference]: Start difference. First operand 1648 states and 2996 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:26:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:45,498 INFO L93 Difference]: Finished difference Result 5413 states and 9984 transitions. [2022-07-19 20:26:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:26:45,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-19 20:26:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:45,531 INFO L225 Difference]: With dead ends: 5413 [2022-07-19 20:26:45,533 INFO L226 Difference]: Without dead ends: 3909 [2022-07-19 20:26:45,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:26:45,543 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 2682 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:45,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 385 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 20:26:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3909 states. [2022-07-19 20:26:45,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3909 to 3901. [2022-07-19 20:26:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3899 states have (on average 1.5957937932803283) internal successors, (6222), 3900 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states 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 20:26:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 6222 transitions. [2022-07-19 20:26:45,624 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 6222 transitions. Word has length 95 [2022-07-19 20:26:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:45,626 INFO L495 AbstractCegarLoop]: Abstraction has 3901 states and 6222 transitions. [2022-07-19 20:26:45,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:26:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 6222 transitions. [2022-07-19 20:26:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 20:26:45,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:45,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:45,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:26:45,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1618571541, now seen corresponding path program 1 times [2022-07-19 20:26:45,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:45,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42125642] [2022-07-19 20:26:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:45,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:26:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:45,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42125642] [2022-07-19 20:26:45,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42125642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:45,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:45,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:26:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140014789] [2022-07-19 20:26:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:45,764 INFO L87 Difference]: Start difference. First operand 3901 states and 6222 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:26:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:48,841 INFO L93 Difference]: Finished difference Result 10662 states and 17528 transitions. [2022-07-19 20:26:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:48,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-19 20:26:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:48,884 INFO L225 Difference]: With dead ends: 10662 [2022-07-19 20:26:48,885 INFO L226 Difference]: Without dead ends: 6905 [2022-07-19 20:26:48,892 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 20:26:48,893 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 913 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:48,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 710 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 20:26:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2022-07-19 20:26:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 6905. [2022-07-19 20:26:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 6903 states have (on average 1.4477763291322614) internal successors, (9994), 6904 states have internal predecessors, (9994), 0 states have call successors, (0), 0 states 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 20:26:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 9994 transitions. [2022-07-19 20:26:49,042 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 9994 transitions. Word has length 101 [2022-07-19 20:26:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:49,044 INFO L495 AbstractCegarLoop]: Abstraction has 6905 states and 9994 transitions. [2022-07-19 20:26:49,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:26:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 9994 transitions. [2022-07-19 20:26:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:26:49,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:49,049 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] [2022-07-19 20:26:49,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:26:49,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:49,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2022-07-19 20:26:49,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:49,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505574474] [2022-07-19 20:26:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:49,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:49,165 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 20:26:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:49,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505574474] [2022-07-19 20:26:49,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505574474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:49,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:49,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486573416] [2022-07-19 20:26:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:49,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:49,171 INFO L87 Difference]: Start difference. First operand 6905 states and 9994 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:49,222 INFO L93 Difference]: Finished difference Result 7051 states and 10226 transitions. [2022-07-19 20:26:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:49,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:26:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:49,246 INFO L225 Difference]: With dead ends: 7051 [2022-07-19 20:26:49,247 INFO L226 Difference]: Without dead ends: 6975 [2022-07-19 20:26:49,250 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 20:26:49,251 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:49,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:49,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6975 states. [2022-07-19 20:26:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6975 to 6973. [2022-07-19 20:26:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6973 states, 6971 states have (on average 1.4492899153636494) internal successors, (10103), 6972 states have internal predecessors, (10103), 0 states have call successors, (0), 0 states 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 20:26:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 10103 transitions. [2022-07-19 20:26:49,395 INFO L78 Accepts]: Start accepts. Automaton has 6973 states and 10103 transitions. Word has length 106 [2022-07-19 20:26:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:49,399 INFO L495 AbstractCegarLoop]: Abstraction has 6973 states and 10103 transitions. [2022-07-19 20:26:49,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6973 states and 10103 transitions. [2022-07-19 20:26:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:26:49,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:49,401 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] [2022-07-19 20:26:49,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:26:49,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:49,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2022-07-19 20:26:49,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:49,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637765422] [2022-07-19 20:26:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:26:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:49,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637765422] [2022-07-19 20:26:49,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637765422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:49,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:49,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437615254] [2022-07-19 20:26:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:49,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:49,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:49,497 INFO L87 Difference]: Start difference. First operand 6973 states and 10103 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:49,595 INFO L93 Difference]: Finished difference Result 7249 states and 10543 transitions. [2022-07-19 20:26:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:26:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:49,619 INFO L225 Difference]: With dead ends: 7249 [2022-07-19 20:26:49,626 INFO L226 Difference]: Without dead ends: 7105 [2022-07-19 20:26:49,628 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 20:26:49,632 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:49,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2022-07-19 20:26:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 7103. [2022-07-19 20:26:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7103 states, 7101 states have (on average 1.4519081819462047) internal successors, (10310), 7102 states have internal predecessors, (10310), 0 states have call successors, (0), 0 states 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 20:26:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 10310 transitions. [2022-07-19 20:26:49,785 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 10310 transitions. Word has length 106 [2022-07-19 20:26:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:49,786 INFO L495 AbstractCegarLoop]: Abstraction has 7103 states and 10310 transitions. [2022-07-19 20:26:49,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 10310 transitions. [2022-07-19 20:26:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:26:49,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:49,788 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] [2022-07-19 20:26:49,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:26:49,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:49,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2022-07-19 20:26:49,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:49,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739698372] [2022-07-19 20:26:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:49,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:49,863 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 20:26:49,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:49,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739698372] [2022-07-19 20:26:49,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739698372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:49,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:49,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:49,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924458997] [2022-07-19 20:26:49,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:49,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:49,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:49,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:49,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:49,867 INFO L87 Difference]: Start difference. First operand 7103 states and 10310 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:49,923 INFO L93 Difference]: Finished difference Result 7627 states and 11144 transitions. [2022-07-19 20:26:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:49,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:26:49,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:49,945 INFO L225 Difference]: With dead ends: 7627 [2022-07-19 20:26:49,945 INFO L226 Difference]: Without dead ends: 7353 [2022-07-19 20:26:49,948 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 20:26:49,951 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:49,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2022-07-19 20:26:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351. [2022-07-19 20:26:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7349 states have (on average 1.456252551367533) internal successors, (10702), 7350 states have internal predecessors, (10702), 0 states have call successors, (0), 0 states 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 20:26:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 10702 transitions. [2022-07-19 20:26:50,075 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 10702 transitions. Word has length 106 [2022-07-19 20:26:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:50,075 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 10702 transitions. [2022-07-19 20:26:50,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 10702 transitions. [2022-07-19 20:26:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:26:50,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:50,077 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] [2022-07-19 20:26:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:26:50,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2022-07-19 20:26:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700255063] [2022-07-19 20:26:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:50,167 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 20:26:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700255063] [2022-07-19 20:26:50,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700255063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:50,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:50,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:50,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987081456] [2022-07-19 20:26:50,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:50,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:50,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:50,170 INFO L87 Difference]: Start difference. First operand 7351 states and 10702 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:50,241 INFO L93 Difference]: Finished difference Result 8347 states and 12280 transitions. [2022-07-19 20:26:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:50,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:26:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:50,255 INFO L225 Difference]: With dead ends: 8347 [2022-07-19 20:26:50,256 INFO L226 Difference]: Without dead ends: 7825 [2022-07-19 20:26:50,259 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 20:26:50,259 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:50,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7825 states. [2022-07-19 20:26:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7825 to 7823. [2022-07-19 20:26:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7821 states have (on average 1.4629842731108553) internal successors, (11442), 7822 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states 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 20:26:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11442 transitions. [2022-07-19 20:26:50,400 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11442 transitions. Word has length 106 [2022-07-19 20:26:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:50,400 INFO L495 AbstractCegarLoop]: Abstraction has 7823 states and 11442 transitions. [2022-07-19 20:26:50,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11442 transitions. [2022-07-19 20:26:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:26:50,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:50,402 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] [2022-07-19 20:26:50,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:26:50,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2022-07-19 20:26:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:50,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838706679] [2022-07-19 20:26:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:50,532 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 20:26:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:50,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838706679] [2022-07-19 20:26:50,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838706679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:50,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:50,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:26:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198902325] [2022-07-19 20:26:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:50,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:26:50,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:50,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:26:50,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:26:50,536 INFO L87 Difference]: Start difference. First operand 7823 states and 11442 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:51,675 INFO L93 Difference]: Finished difference Result 23727 states and 36546 transitions. [2022-07-19 20:26:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:26:51,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:26:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:51,723 INFO L225 Difference]: With dead ends: 23727 [2022-07-19 20:26:51,724 INFO L226 Difference]: Without dead ends: 22733 [2022-07-19 20:26:51,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-19 20:26:51,736 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:51,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:26:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22733 states. [2022-07-19 20:26:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22733 to 8815. [2022-07-19 20:26:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8813 states have (on average 1.472597299444003) internal successors, (12978), 8814 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states 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 20:26:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 12978 transitions. [2022-07-19 20:26:52,107 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 12978 transitions. Word has length 106 [2022-07-19 20:26:52,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:52,107 INFO L495 AbstractCegarLoop]: Abstraction has 8815 states and 12978 transitions. [2022-07-19 20:26:52,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:26:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 12978 transitions. [2022-07-19 20:26:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:26:52,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:52,109 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] [2022-07-19 20:26:52,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:26:52,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2022-07-19 20:26:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:52,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097178993] [2022-07-19 20:26:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:52,168 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 20:26:52,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:52,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097178993] [2022-07-19 20:26:52,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097178993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:52,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:52,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608294588] [2022-07-19 20:26:52,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:52,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:52,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:52,174 INFO L87 Difference]: Start difference. First operand 8815 states and 12978 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:52,425 INFO L93 Difference]: Finished difference Result 11757 states and 17574 transitions. [2022-07-19 20:26:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:52,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:26:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:52,441 INFO L225 Difference]: With dead ends: 11757 [2022-07-19 20:26:52,442 INFO L226 Difference]: Without dead ends: 9771 [2022-07-19 20:26:52,449 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 20:26:52,450 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:52,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2022-07-19 20:26:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2022-07-19 20:26:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9769 states, 9767 states have (on average 1.4788573768813351) internal successors, (14444), 9768 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states 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 20:26:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 14444 transitions. [2022-07-19 20:26:52,901 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 14444 transitions. Word has length 108 [2022-07-19 20:26:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:52,902 INFO L495 AbstractCegarLoop]: Abstraction has 9769 states and 14444 transitions. [2022-07-19 20:26:52,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 14444 transitions. [2022-07-19 20:26:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:26:52,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:52,904 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] [2022-07-19 20:26:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:26:52,904 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2022-07-19 20:26:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112255972] [2022-07-19 20:26:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:52,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:53,238 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 20:26:53,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112255972] [2022-07-19 20:26:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112255972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:53,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:53,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:26:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266327307] [2022-07-19 20:26:53,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:53,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:26:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:26:53,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:26:53,242 INFO L87 Difference]: Start difference. First operand 9769 states and 14444 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:53,934 INFO L93 Difference]: Finished difference Result 12709 states and 19014 transitions. [2022-07-19 20:26:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:26:53,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:26:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:53,953 INFO L225 Difference]: With dead ends: 12709 [2022-07-19 20:26:53,953 INFO L226 Difference]: Without dead ends: 9771 [2022-07-19 20:26:53,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:26:53,959 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 6630 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6630 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:53,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6630 Valid, 2490 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:26:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2022-07-19 20:26:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2022-07-19 20:26:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9769 states, 9767 states have (on average 1.4764001228627008) internal successors, (14420), 9768 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states 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 20:26:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 14420 transitions. [2022-07-19 20:26:54,345 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 14420 transitions. Word has length 108 [2022-07-19 20:26:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:54,345 INFO L495 AbstractCegarLoop]: Abstraction has 9769 states and 14420 transitions. [2022-07-19 20:26:54,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 14420 transitions. [2022-07-19 20:26:54,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:26:54,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:54,347 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] [2022-07-19 20:26:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:26:54,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2022-07-19 20:26:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:54,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39472506] [2022-07-19 20:26:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:54,396 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 20:26:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:54,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39472506] [2022-07-19 20:26:54,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39472506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:54,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:54,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936307139] [2022-07-19 20:26:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:54,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:54,399 INFO L87 Difference]: Start difference. First operand 9769 states and 14420 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:54,823 INFO L93 Difference]: Finished difference Result 15357 states and 23030 transitions. [2022-07-19 20:26:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:26:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:54,845 INFO L225 Difference]: With dead ends: 15357 [2022-07-19 20:26:54,846 INFO L226 Difference]: Without dead ends: 12419 [2022-07-19 20:26:54,855 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 20:26:54,856 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:54,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2022-07-19 20:26:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 12417. [2022-07-19 20:26:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 12415 states have (on average 1.484977849375755) internal successors, (18436), 12416 states have internal predecessors, (18436), 0 states have call successors, (0), 0 states 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 20:26:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 18436 transitions. [2022-07-19 20:26:55,380 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 18436 transitions. Word has length 108 [2022-07-19 20:26:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:55,380 INFO L495 AbstractCegarLoop]: Abstraction has 12417 states and 18436 transitions. [2022-07-19 20:26:55,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 18436 transitions. [2022-07-19 20:26:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:26:55,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:55,382 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] [2022-07-19 20:26:55,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:26:55,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2022-07-19 20:26:55,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:55,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047042821] [2022-07-19 20:26:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:55,431 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 20:26:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:55,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047042821] [2022-07-19 20:26:55,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047042821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:55,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:55,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134707368] [2022-07-19 20:26:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:55,434 INFO L87 Difference]: Start difference. First operand 12417 states and 18436 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:56,141 INFO L93 Difference]: Finished difference Result 23013 states and 34598 transitions. [2022-07-19 20:26:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:56,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:26:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:56,169 INFO L225 Difference]: With dead ends: 23013 [2022-07-19 20:26:56,169 INFO L226 Difference]: Without dead ends: 17427 [2022-07-19 20:26:56,180 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 20:26:56,181 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:56,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2022-07-19 20:26:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17425. [2022-07-19 20:26:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17425 states, 17423 states have (on average 1.4888365953050566) internal successors, (25940), 17424 states have internal predecessors, (25940), 0 states have call successors, (0), 0 states 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 20:26:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 25940 transitions. [2022-07-19 20:26:57,128 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 25940 transitions. Word has length 108 [2022-07-19 20:26:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:26:57,129 INFO L495 AbstractCegarLoop]: Abstraction has 17425 states and 25940 transitions. [2022-07-19 20:26:57,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 25940 transitions. [2022-07-19 20:26:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:26:57,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:26:57,131 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] [2022-07-19 20:26:57,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:26:57,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:26:57,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:26:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2022-07-19 20:26:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:26:57,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558659399] [2022-07-19 20:26:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:26:57,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:26:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:26:57,209 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 20:26:57,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:26:57,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558659399] [2022-07-19 20:26:57,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558659399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:26:57,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:26:57,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:26:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837203050] [2022-07-19 20:26:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:26:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:26:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:26:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:26:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:26:57,212 INFO L87 Difference]: Start difference. First operand 17425 states and 25940 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:26:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:26:58,484 INFO L93 Difference]: Finished difference Result 37461 states and 56150 transitions. [2022-07-19 20:26:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:26:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:26:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:26:58,528 INFO L225 Difference]: With dead ends: 37461 [2022-07-19 20:26:58,528 INFO L226 Difference]: Without dead ends: 26867 [2022-07-19 20:26:58,549 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 20:26:58,550 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:26:58,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:26:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26867 states. [2022-07-19 20:27:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26867 to 26865. [2022-07-19 20:27:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26865 states, 26863 states have (on average 1.4850165655362395) internal successors, (39892), 26864 states have internal predecessors, (39892), 0 states have call successors, (0), 0 states 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 20:27:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 39892 transitions. [2022-07-19 20:27:00,293 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 39892 transitions. Word has length 108 [2022-07-19 20:27:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:27:00,294 INFO L495 AbstractCegarLoop]: Abstraction has 26865 states and 39892 transitions. [2022-07-19 20:27:00,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:27:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 39892 transitions. [2022-07-19 20:27:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:27:00,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:27:00,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:27:00,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:27:00,297 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:27:00,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:27:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2022-07-19 20:27:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:27:00,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308018383] [2022-07-19 20:27:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:27:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:27:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:27:00,350 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 20:27:00,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:27:00,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308018383] [2022-07-19 20:27:00,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308018383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:27:00,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:27:00,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:27:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319208864] [2022-07-19 20:27:00,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:27:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:27:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:27:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:27:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:27:00,353 INFO L87 Difference]: Start difference. First operand 26865 states and 39892 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:27:03,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:27:03,003 INFO L93 Difference]: Finished difference Result 64629 states and 96086 transitions. [2022-07-19 20:27:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:27:03,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:27:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:27:03,058 INFO L225 Difference]: With dead ends: 64629 [2022-07-19 20:27:03,058 INFO L226 Difference]: Without dead ends: 44595 [2022-07-19 20:27:03,076 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 20:27:03,077 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:27:03,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:27:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44595 states. [2022-07-19 20:27:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44595 to 44593. [2022-07-19 20:27:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44593 states, 44591 states have (on average 1.4730326747549953) internal successors, (65684), 44592 states have internal predecessors, (65684), 0 states have call successors, (0), 0 states 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 20:27:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44593 states to 44593 states and 65684 transitions. [2022-07-19 20:27:06,509 INFO L78 Accepts]: Start accepts. Automaton has 44593 states and 65684 transitions. Word has length 108 [2022-07-19 20:27:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:27:06,509 INFO L495 AbstractCegarLoop]: Abstraction has 44593 states and 65684 transitions. [2022-07-19 20:27:06,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 20:27:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 44593 states and 65684 transitions. [2022-07-19 20:27:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 20:27:06,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:27:06,511 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] [2022-07-19 20:27:06,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:27:06,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:27:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:27:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2022-07-19 20:27:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:27:06,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99049696] [2022-07-19 20:27:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:27:06,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:27:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:27:06,782 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 20:27:06,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:27:06,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99049696] [2022-07-19 20:27:06,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99049696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:27:06,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:27:06,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:27:06,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180366448] [2022-07-19 20:27:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:27:06,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:27:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:27:06,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:27:06,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:27:06,785 INFO L87 Difference]: Start difference. First operand 44593 states and 65684 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 20:27:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:27:12,651 INFO L93 Difference]: Finished difference Result 76760 states and 112261 transitions. [2022-07-19 20:27:12,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:27:12,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-19 20:27:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:27:12,748 INFO L225 Difference]: With dead ends: 76760 [2022-07-19 20:27:12,749 INFO L226 Difference]: Without dead ends: 76758 [2022-07-19 20:27:12,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:27:12,769 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:27:12,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:27:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76758 states. [2022-07-19 20:27:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76758 to 46129. [2022-07-19 20:27:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46129 states, 46127 states have (on average 1.454506037678583) internal successors, (67092), 46128 states have internal predecessors, (67092), 0 states have call successors, (0), 0 states 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 20:27:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46129 states to 46129 states and 67092 transitions. [2022-07-19 20:27:17,022 INFO L78 Accepts]: Start accepts. Automaton has 46129 states and 67092 transitions. Word has length 109 [2022-07-19 20:27:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:27:17,022 INFO L495 AbstractCegarLoop]: Abstraction has 46129 states and 67092 transitions. [2022-07-19 20:27:17,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 20:27:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 46129 states and 67092 transitions. [2022-07-19 20:27:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 20:27:17,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:27:17,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:27:17,048 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:27:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:27:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2022-07-19 20:27:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:27:17,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396690990] [2022-07-19 20:27:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:27:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:27:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:27:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 20:27:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:27:17,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396690990] [2022-07-19 20:27:17,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396690990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:27:17,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:27:17,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:27:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681094727] [2022-07-19 20:27:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:27:17,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:27:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:27:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:27:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:27:17,171 INFO L87 Difference]: Start difference. First operand 46129 states and 67092 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)