./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.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 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:19:41,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:19:41,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:19:41,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:19:41,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:19:41,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:19:41,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:19:41,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:19:41,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:19:41,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:19:41,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:19:41,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:19:41,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:19:41,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:19:41,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:19:41,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:19:41,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:19:41,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:19:41,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:19:41,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:19:41,820 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:19:41,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:19:41,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:19:41,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:19:41,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:19:41,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:19:41,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:19:41,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:19:41,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:19:41,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:19:41,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:19:41,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:19:41,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:19:41,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:19:41,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:19:41,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:19:41,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:19:41,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:19:41,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:19:41,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:19:41,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:19:41,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:19:41,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:19:41,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:19:41,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:19:41,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:19:41,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:19:41,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:19:41,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:19:41,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:19:41,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:19:41,855 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:19:41,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:19:41,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:19:41,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:19:41,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:19:41,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:19:41,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:19:41,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:19:41,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:19:41,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:19:41,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:19:41,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:19:41,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:19:41,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:19:41,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:19:41,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:19:41,859 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:19:41,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:19:41,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:19:41,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 [2022-07-12 07:19:42,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:19:42,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:19:42,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:19:42,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:19:42,049 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:19:42,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-07-12 07:19:42,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bf5f980/8e4de19387e44a159145d657f906efd6/FLAG1954fe640 [2022-07-12 07:19:42,435 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:19:42,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-07-12 07:19:42,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bf5f980/8e4de19387e44a159145d657f906efd6/FLAG1954fe640 [2022-07-12 07:19:42,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bf5f980/8e4de19387e44a159145d657f906efd6 [2022-07-12 07:19:42,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:19:42,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:19:42,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:19:42,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:19:42,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:19:42,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:19:42" (1/1) ... [2022-07-12 07:19:42,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba33048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:42, skipping insertion in model container [2022-07-12 07:19:42,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:19:42" (1/1) ... [2022-07-12 07:19:42,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:19:42,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:19:43,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-07-12 07:19:43,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:19:43,157 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:19:43,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-07-12 07:19:43,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:19:43,244 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:19:43,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43 WrapperNode [2022-07-12 07:19:43,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:19:43,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:19:43,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:19:43,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:19:43,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,303 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 827 [2022-07-12 07:19:43,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:19:43,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:19:43,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:19:43,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:19:43,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:19:43,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:19:43,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:19:43,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:19:43,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (1/1) ... [2022-07-12 07:19:43,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:19:43,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:19:43,366 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) [2022-07-12 07:19:43,367 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 [2022-07-12 07:19:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:19:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:19:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:19:43,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:19:43,499 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:19:43,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:19:44,034 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:19:44,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:19:44,045 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:19:44,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:19:44 BoogieIcfgContainer [2022-07-12 07:19:44,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:19:44,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:19:44,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:19:44,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:19:44,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:19:42" (1/3) ... [2022-07-12 07:19:44,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de2130c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:19:44, skipping insertion in model container [2022-07-12 07:19:44,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:19:43" (2/3) ... [2022-07-12 07:19:44,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de2130c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:19:44, skipping insertion in model container [2022-07-12 07:19:44,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:19:44" (3/3) ... [2022-07-12 07:19:44,055 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-07-12 07:19:44,065 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:19:44,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:19:44,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:19:44,121 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@7676db23, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ff2d7c1 [2022-07-12 07:19:44,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:19:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 07:19:44,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:44,162 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] [2022-07-12 07:19:44,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1369000833, now seen corresponding path program 1 times [2022-07-12 07:19:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:44,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927127588] [2022-07-12 07:19:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:44,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927127588] [2022-07-12 07:19:44,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927127588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:44,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:44,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:19:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559111810] [2022-07-12 07:19:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:44,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:19:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:19:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:19:44,442 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:44,560 INFO L93 Difference]: Finished difference Result 403 states and 654 transitions. [2022-07-12 07:19:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:19:44,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-12 07:19:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:44,572 INFO L225 Difference]: With dead ends: 403 [2022-07-12 07:19:44,573 INFO L226 Difference]: Without dead ends: 212 [2022-07-12 07:19:44,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:19:44,578 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 102 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:44,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 921 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:19:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-12 07:19:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-07-12 07:19:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.5023696682464456) internal successors, (317), 211 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 317 transitions. [2022-07-12 07:19:44,617 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 317 transitions. Word has length 79 [2022-07-12 07:19:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:44,617 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 317 transitions. [2022-07-12 07:19:44,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 317 transitions. [2022-07-12 07:19:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 07:19:44,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:44,624 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] [2022-07-12 07:19:44,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:19:44,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1406572509, now seen corresponding path program 1 times [2022-07-12 07:19:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:44,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004867803] [2022-07-12 07:19:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:44,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004867803] [2022-07-12 07:19:44,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004867803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:44,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:44,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:19:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354653749] [2022-07-12 07:19:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:44,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:19:44,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:19:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:19:44,801 INFO L87 Difference]: Start difference. First operand 212 states and 317 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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) [2022-07-12 07:19:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:44,826 INFO L93 Difference]: Finished difference Result 480 states and 743 transitions. [2022-07-12 07:19:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:19:44,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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 [2022-07-12 07:19:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:44,829 INFO L225 Difference]: With dead ends: 480 [2022-07-12 07:19:44,829 INFO L226 Difference]: Without dead ends: 309 [2022-07-12 07:19:44,830 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 [2022-07-12 07:19:44,830 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 175 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:44,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 559 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:19:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-12 07:19:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2022-07-12 07:19:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.526143790849673) internal successors, (467), 306 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 467 transitions. [2022-07-12 07:19:44,851 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 467 transitions. Word has length 109 [2022-07-12 07:19:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:44,852 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 467 transitions. [2022-07-12 07:19:44,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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) [2022-07-12 07:19:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 467 transitions. [2022-07-12 07:19:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 07:19:44,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:44,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:44,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:19:44,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1105344852, now seen corresponding path program 1 times [2022-07-12 07:19:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:44,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330847111] [2022-07-12 07:19:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:44,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:44,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330847111] [2022-07-12 07:19:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330847111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:44,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:44,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:19:44,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535455620] [2022-07-12 07:19:44,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:19:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:19:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:19:44,936 INFO L87 Difference]: Start difference. First operand 307 states and 467 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:44,964 INFO L93 Difference]: Finished difference Result 735 states and 1148 transitions. [2022-07-12 07:19:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:19:44,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-07-12 07:19:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:44,967 INFO L225 Difference]: With dead ends: 735 [2022-07-12 07:19:44,967 INFO L226 Difference]: Without dead ends: 475 [2022-07-12 07:19:44,968 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 [2022-07-12 07:19:44,969 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 162 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:44,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 602 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:19:44,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-07-12 07:19:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2022-07-12 07:19:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5444915254237288) internal successors, (729), 472 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 729 transitions. [2022-07-12 07:19:44,994 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 729 transitions. Word has length 111 [2022-07-12 07:19:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:44,995 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 729 transitions. [2022-07-12 07:19:44,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 729 transitions. [2022-07-12 07:19:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 07:19:44,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:44,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:44,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:19:44,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash 287285005, now seen corresponding path program 1 times [2022-07-12 07:19:44,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:44,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710846223] [2022-07-12 07:19:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:44,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:45,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710846223] [2022-07-12 07:19:45,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710846223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:45,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:45,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:19:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440184646] [2022-07-12 07:19:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:45,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:19:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:19:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:19:45,089 INFO L87 Difference]: Start difference. First operand 473 states and 729 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:45,139 INFO L93 Difference]: Finished difference Result 1175 states and 1844 transitions. [2022-07-12 07:19:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:19:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-12 07:19:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:45,143 INFO L225 Difference]: With dead ends: 1175 [2022-07-12 07:19:45,143 INFO L226 Difference]: Without dead ends: 755 [2022-07-12 07:19:45,143 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 [2022-07-12 07:19:45,144 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 149 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:45,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 519 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:19:45,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-07-12 07:19:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2022-07-12 07:19:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5545212765957446) internal successors, (1169), 752 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1169 transitions. [2022-07-12 07:19:45,194 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1169 transitions. Word has length 113 [2022-07-12 07:19:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:45,196 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1169 transitions. [2022-07-12 07:19:45,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1169 transitions. [2022-07-12 07:19:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 07:19:45,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:45,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:19:45,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 155565224, now seen corresponding path program 1 times [2022-07-12 07:19:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:45,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057022987] [2022-07-12 07:19:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:45,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:45,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057022987] [2022-07-12 07:19:45,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057022987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:45,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:45,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:19:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220665809] [2022-07-12 07:19:45,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:45,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:19:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:19:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:19:45,292 INFO L87 Difference]: Start difference. First operand 753 states and 1169 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:45,347 INFO L93 Difference]: Finished difference Result 1901 states and 2984 transitions. [2022-07-12 07:19:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:19:45,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-07-12 07:19:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:45,353 INFO L225 Difference]: With dead ends: 1901 [2022-07-12 07:19:45,354 INFO L226 Difference]: Without dead ends: 1207 [2022-07-12 07:19:45,355 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 [2022-07-12 07:19:45,361 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 136 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:45,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 530 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:19:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-07-12 07:19:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2022-07-12 07:19:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1204 states have (on average 1.5556478405315615) internal successors, (1873), 1204 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1873 transitions. [2022-07-12 07:19:45,407 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1873 transitions. Word has length 115 [2022-07-12 07:19:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:45,408 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1873 transitions. [2022-07-12 07:19:45,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1873 transitions. [2022-07-12 07:19:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 07:19:45,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:45,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:19:45,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2047962190, now seen corresponding path program 1 times [2022-07-12 07:19:45,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:45,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236470153] [2022-07-12 07:19:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:45,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:45,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236470153] [2022-07-12 07:19:45,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236470153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:45,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:45,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:19:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075189988] [2022-07-12 07:19:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:45,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:19:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:19:45,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:19:45,480 INFO L87 Difference]: Start difference. First operand 1205 states and 1873 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:45,559 INFO L93 Difference]: Finished difference Result 3031 states and 4736 transitions. [2022-07-12 07:19:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:19:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-12 07:19:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:45,566 INFO L225 Difference]: With dead ends: 3031 [2022-07-12 07:19:45,566 INFO L226 Difference]: Without dead ends: 1891 [2022-07-12 07:19:45,568 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 [2022-07-12 07:19:45,570 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 123 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:45,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 479 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:19:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-07-12 07:19:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1889. [2022-07-12 07:19:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5471398305084745) internal successors, (2921), 1888 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2921 transitions. [2022-07-12 07:19:45,676 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2921 transitions. Word has length 117 [2022-07-12 07:19:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:45,676 INFO L495 AbstractCegarLoop]: Abstraction has 1889 states and 2921 transitions. [2022-07-12 07:19:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2921 transitions. [2022-07-12 07:19:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 07:19:45,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:45,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:45,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:19:45,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1115406563, now seen corresponding path program 1 times [2022-07-12 07:19:45,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:45,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940780719] [2022-07-12 07:19:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:45,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940780719] [2022-07-12 07:19:45,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940780719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:45,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:45,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:19:45,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188636101] [2022-07-12 07:19:45,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:19:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:45,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:19:45,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:19:45,756 INFO L87 Difference]: Start difference. First operand 1889 states and 2921 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:46,603 INFO L93 Difference]: Finished difference Result 16374 states and 25284 transitions. [2022-07-12 07:19:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:19:46,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-12 07:19:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:46,649 INFO L225 Difference]: With dead ends: 16374 [2022-07-12 07:19:46,650 INFO L226 Difference]: Without dead ends: 14556 [2022-07-12 07:19:46,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:19:46,657 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 2403 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:46,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 1884 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:19:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14556 states. [2022-07-12 07:19:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14556 to 3650. [2022-07-12 07:19:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 1.5168539325842696) internal successors, (5535), 3649 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5535 transitions. [2022-07-12 07:19:47,025 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5535 transitions. Word has length 119 [2022-07-12 07:19:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:47,027 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 5535 transitions. [2022-07-12 07:19:47,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5535 transitions. [2022-07-12 07:19:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 07:19:47,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:47,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:19:47,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 551400311, now seen corresponding path program 1 times [2022-07-12 07:19:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:47,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046184860] [2022-07-12 07:19:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:47,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:47,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046184860] [2022-07-12 07:19:47,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046184860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:47,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:47,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:19:47,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858484494] [2022-07-12 07:19:47,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:47,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:19:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:19:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:19:47,094 INFO L87 Difference]: Start difference. First operand 3650 states and 5535 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:47,450 INFO L93 Difference]: Finished difference Result 8386 states and 12721 transitions. [2022-07-12 07:19:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:19:47,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-12 07:19:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:47,470 INFO L225 Difference]: With dead ends: 8386 [2022-07-12 07:19:47,470 INFO L226 Difference]: Without dead ends: 4805 [2022-07-12 07:19:47,474 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 [2022-07-12 07:19:47,475 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 186 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:47,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 592 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:19:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2022-07-12 07:19:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4803. [2022-07-12 07:19:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4802 states have (on average 1.4929196168263223) internal successors, (7169), 4802 states have internal predecessors, (7169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 7169 transitions. [2022-07-12 07:19:47,839 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 7169 transitions. Word has length 123 [2022-07-12 07:19:47,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:47,839 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 7169 transitions. [2022-07-12 07:19:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 7169 transitions. [2022-07-12 07:19:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 07:19:47,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:47,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:19:47,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 176931542, now seen corresponding path program 1 times [2022-07-12 07:19:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:47,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691235060] [2022-07-12 07:19:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691235060] [2022-07-12 07:19:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691235060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:48,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:19:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648765865] [2022-07-12 07:19:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:19:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:19:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:19:48,033 INFO L87 Difference]: Start difference. First operand 4803 states and 7169 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:48,474 INFO L93 Difference]: Finished difference Result 9538 states and 14258 transitions. [2022-07-12 07:19:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:19:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-12 07:19:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:48,483 INFO L225 Difference]: With dead ends: 9538 [2022-07-12 07:19:48,483 INFO L226 Difference]: Without dead ends: 4805 [2022-07-12 07:19:48,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:19:48,489 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1151 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:48,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 995 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:19:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2022-07-12 07:19:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4803. [2022-07-12 07:19:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4802 states have (on average 1.4760516451478551) internal successors, (7088), 4802 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 7088 transitions. [2022-07-12 07:19:48,781 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 7088 transitions. Word has length 123 [2022-07-12 07:19:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:48,781 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 7088 transitions. [2022-07-12 07:19:48,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 7088 transitions. [2022-07-12 07:19:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:19:48,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:48,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:48,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:19:48,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash -382371942, now seen corresponding path program 1 times [2022-07-12 07:19:48,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:48,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205359618] [2022-07-12 07:19:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:48,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:48,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:48,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205359618] [2022-07-12 07:19:48,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205359618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:48,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:48,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:19:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312681190] [2022-07-12 07:19:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:19:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:19:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:19:48,856 INFO L87 Difference]: Start difference. First operand 4803 states and 7088 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:50,181 INFO L93 Difference]: Finished difference Result 24885 states and 36792 transitions. [2022-07-12 07:19:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:19:50,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:19:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:50,219 INFO L225 Difference]: With dead ends: 24885 [2022-07-12 07:19:50,220 INFO L226 Difference]: Without dead ends: 21155 [2022-07-12 07:19:50,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:19:50,233 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1574 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:50,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1550 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:19:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21155 states. [2022-07-12 07:19:50,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21155 to 8726. [2022-07-12 07:19:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 8725 states have (on average 1.468080229226361) internal successors, (12809), 8725 states have internal predecessors, (12809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 12809 transitions. [2022-07-12 07:19:50,841 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 12809 transitions. Word has length 124 [2022-07-12 07:19:50,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:50,841 INFO L495 AbstractCegarLoop]: Abstraction has 8726 states and 12809 transitions. [2022-07-12 07:19:50,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 12809 transitions. [2022-07-12 07:19:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:19:50,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:50,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:19:50,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -354034678, now seen corresponding path program 1 times [2022-07-12 07:19:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:50,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327593538] [2022-07-12 07:19:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:50,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:50,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327593538] [2022-07-12 07:19:50,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327593538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:50,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:50,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:19:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111279551] [2022-07-12 07:19:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:50,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:19:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:19:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:19:50,919 INFO L87 Difference]: Start difference. First operand 8726 states and 12809 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:52,669 INFO L93 Difference]: Finished difference Result 28673 states and 42340 transitions. [2022-07-12 07:19:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:19:52,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:19:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:52,719 INFO L225 Difference]: With dead ends: 28673 [2022-07-12 07:19:52,719 INFO L226 Difference]: Without dead ends: 24943 [2022-07-12 07:19:52,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:19:52,735 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1431 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:52,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1757 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:19:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24943 states. [2022-07-12 07:19:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24943 to 14571. [2022-07-12 07:19:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14571 states, 14570 states have (on average 1.4636925188743994) internal successors, (21326), 14570 states have internal predecessors, (21326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14571 states to 14571 states and 21326 transitions. [2022-07-12 07:19:53,836 INFO L78 Accepts]: Start accepts. Automaton has 14571 states and 21326 transitions. Word has length 124 [2022-07-12 07:19:53,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:53,836 INFO L495 AbstractCegarLoop]: Abstraction has 14571 states and 21326 transitions. [2022-07-12 07:19:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 14571 states and 21326 transitions. [2022-07-12 07:19:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:19:53,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:53,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:53,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:19:53,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:53,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1968161173, now seen corresponding path program 1 times [2022-07-12 07:19:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:53,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108343911] [2022-07-12 07:19:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:53,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108343911] [2022-07-12 07:19:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108343911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:53,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:53,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:19:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158891528] [2022-07-12 07:19:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:53,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:19:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:19:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:19:53,922 INFO L87 Difference]: Start difference. First operand 14571 states and 21326 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:19:55,951 INFO L93 Difference]: Finished difference Result 32543 states and 48010 transitions. [2022-07-12 07:19:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:19:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:19:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:19:55,998 INFO L225 Difference]: With dead ends: 32543 [2022-07-12 07:19:55,998 INFO L226 Difference]: Without dead ends: 28813 [2022-07-12 07:19:56,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:19:56,010 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1495 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:19:56,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1769 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:19:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28813 states. [2022-07-12 07:19:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28813 to 18531. [2022-07-12 07:19:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18531 states, 18530 states have (on average 1.4644360496492175) internal successors, (27136), 18530 states have internal predecessors, (27136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18531 states to 18531 states and 27136 transitions. [2022-07-12 07:19:57,724 INFO L78 Accepts]: Start accepts. Automaton has 18531 states and 27136 transitions. Word has length 124 [2022-07-12 07:19:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:19:57,724 INFO L495 AbstractCegarLoop]: Abstraction has 18531 states and 27136 transitions. [2022-07-12 07:19:57,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:19:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 18531 states and 27136 transitions. [2022-07-12 07:19:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:19:57,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:19:57,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:19:57,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:19:57,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:19:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:19:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1282449422, now seen corresponding path program 1 times [2022-07-12 07:19:57,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:19:57,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063064762] [2022-07-12 07:19:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:19:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:19:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:19:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:19:57,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:19:57,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063064762] [2022-07-12 07:19:57,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063064762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:19:57,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:19:57,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:19:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042555132] [2022-07-12 07:19:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:19:57,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:19:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:19:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:19:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:19:57,812 INFO L87 Difference]: Start difference. First operand 18531 states and 27136 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:20:00,328 INFO L93 Difference]: Finished difference Result 36472 states and 53771 transitions. [2022-07-12 07:20:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:20:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:20:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:20:00,378 INFO L225 Difference]: With dead ends: 36472 [2022-07-12 07:20:00,379 INFO L226 Difference]: Without dead ends: 32742 [2022-07-12 07:20:00,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:20:00,396 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1718 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:20:00,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1775 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:20:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32742 states. [2022-07-12 07:20:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32742 to 22500. [2022-07-12 07:20:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22500 states, 22499 states have (on average 1.4649984443753055) internal successors, (32961), 22499 states have internal predecessors, (32961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22500 states to 22500 states and 32961 transitions. [2022-07-12 07:20:02,380 INFO L78 Accepts]: Start accepts. Automaton has 22500 states and 32961 transitions. Word has length 124 [2022-07-12 07:20:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:20:02,380 INFO L495 AbstractCegarLoop]: Abstraction has 22500 states and 32961 transitions. [2022-07-12 07:20:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 22500 states and 32961 transitions. [2022-07-12 07:20:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:20:02,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:20:02,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:20:02,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:20:02,404 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:20:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:20:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1765417965, now seen corresponding path program 1 times [2022-07-12 07:20:02,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:20:02,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893150345] [2022-07-12 07:20:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:20:02,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:20:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:20:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:20:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:20:02,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893150345] [2022-07-12 07:20:02,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893150345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:20:02,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:20:02,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:20:02,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641272792] [2022-07-12 07:20:02,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:20:02,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:20:02,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:20:02,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:20:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:20:02,474 INFO L87 Difference]: Start difference. First operand 22500 states and 32961 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:20:05,894 INFO L93 Difference]: Finished difference Result 38062 states and 56157 transitions. [2022-07-12 07:20:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:20:05,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:20:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:20:05,949 INFO L225 Difference]: With dead ends: 38062 [2022-07-12 07:20:05,949 INFO L226 Difference]: Without dead ends: 35532 [2022-07-12 07:20:05,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:20:05,965 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1742 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:20:05,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 1288 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:20:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35532 states. [2022-07-12 07:20:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35532 to 25290. [2022-07-12 07:20:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25290 states, 25289 states have (on average 1.4673178061607814) internal successors, (37107), 25289 states have internal predecessors, (37107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25290 states to 25290 states and 37107 transitions. [2022-07-12 07:20:08,331 INFO L78 Accepts]: Start accepts. Automaton has 25290 states and 37107 transitions. Word has length 124 [2022-07-12 07:20:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:20:08,331 INFO L495 AbstractCegarLoop]: Abstraction has 25290 states and 37107 transitions. [2022-07-12 07:20:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 25290 states and 37107 transitions. [2022-07-12 07:20:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 07:20:08,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:20:08,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:20:08,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:20:08,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:20:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:20:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1430653822, now seen corresponding path program 1 times [2022-07-12 07:20:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:20:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573787530] [2022-07-12 07:20:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:20:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:20:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:20:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:20:08,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:20:08,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573787530] [2022-07-12 07:20:08,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573787530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:20:08,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:20:08,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:20:08,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374119577] [2022-07-12 07:20:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:20:08,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:20:08,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:20:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:20:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:20:08,396 INFO L87 Difference]: Start difference. First operand 25290 states and 37107 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:20:13,180 INFO L93 Difference]: Finished difference Result 74047 states and 108590 transitions. [2022-07-12 07:20:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:20:13,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-07-12 07:20:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:20:13,260 INFO L225 Difference]: With dead ends: 74047 [2022-07-12 07:20:13,260 INFO L226 Difference]: Without dead ends: 50236 [2022-07-12 07:20:13,284 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 [2022-07-12 07:20:13,285 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 153 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:20:13,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 336 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:20:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50236 states. [2022-07-12 07:20:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50236 to 50234. [2022-07-12 07:20:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50234 states, 50233 states have (on average 1.4585431887404694) internal successors, (73267), 50233 states have internal predecessors, (73267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50234 states to 50234 states and 73267 transitions. [2022-07-12 07:20:18,379 INFO L78 Accepts]: Start accepts. Automaton has 50234 states and 73267 transitions. Word has length 126 [2022-07-12 07:20:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:20:18,379 INFO L495 AbstractCegarLoop]: Abstraction has 50234 states and 73267 transitions. [2022-07-12 07:20:18,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 50234 states and 73267 transitions. [2022-07-12 07:20:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 07:20:18,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:20:18,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:20:18,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:20:18,430 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:20:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:20:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1754976601, now seen corresponding path program 1 times [2022-07-12 07:20:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:20:18,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901993428] [2022-07-12 07:20:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:20:18,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:20:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:20:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:20:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:20:18,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901993428] [2022-07-12 07:20:18,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901993428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:20:18,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:20:18,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:20:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491746453] [2022-07-12 07:20:18,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:20:18,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:20:18,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:20:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:20:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:20:18,468 INFO L87 Difference]: Start difference. First operand 50234 states and 73267 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:20:28,256 INFO L93 Difference]: Finished difference Result 146459 states and 213194 transitions. [2022-07-12 07:20:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:20:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-07-12 07:20:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:20:28,436 INFO L225 Difference]: With dead ends: 146459 [2022-07-12 07:20:28,437 INFO L226 Difference]: Without dead ends: 99677 [2022-07-12 07:20:28,481 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 [2022-07-12 07:20:28,482 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 136 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:20:28,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 348 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:20:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99677 states. [2022-07-12 07:20:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99677 to 99675. [2022-07-12 07:20:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99675 states, 99674 states have (on average 1.4477797620241988) internal successors, (144306), 99674 states have internal predecessors, (144306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99675 states to 99675 states and 144306 transitions. [2022-07-12 07:20:39,423 INFO L78 Accepts]: Start accepts. Automaton has 99675 states and 144306 transitions. Word has length 126 [2022-07-12 07:20:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:20:39,423 INFO L495 AbstractCegarLoop]: Abstraction has 99675 states and 144306 transitions. [2022-07-12 07:20:39,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:20:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 99675 states and 144306 transitions. [2022-07-12 07:20:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 07:20:39,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:20:39,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:20:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:20:39,543 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:20:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:20:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1266122690, now seen corresponding path program 1 times [2022-07-12 07:20:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:20:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124838554] [2022-07-12 07:20:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:20:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:20:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:20:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:20:39,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:20:39,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124838554] [2022-07-12 07:20:39,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124838554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:20:39,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:20:39,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:20:39,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996847531] [2022-07-12 07:20:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:20:39,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:20:39,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:20:39,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:20:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:20:39,603 INFO L87 Difference]: Start difference. First operand 99675 states and 144306 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)