./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a9891cd4c5f04616b7fa480ff51a2b34c717470141ef1b888630cca6069f53e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:04:07,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:04:07,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:04:07,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:04:07,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:04:07,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:04:07,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:04:07,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:04:07,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:04:07,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:04:07,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:04:07,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:04:07,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:04:07,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:04:07,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:04:07,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:04:07,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:04:07,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:04:07,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:04:07,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:04:07,253 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:04:07,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:04:07,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:04:07,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:04:07,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:04:07,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:04:07,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:04:07,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:04:07,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:04:07,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:04:07,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:04:07,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:04:07,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:04:07,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:04:07,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:04:07,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:04:07,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:04:07,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:04:07,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:04:07,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:04:07,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:04:07,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:04:07,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:04:07,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:04:07,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:04:07,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:04:07,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:04:07,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:04:07,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:04:07,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:04:07,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:04:07,288 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:04:07,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:04:07,289 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:04:07,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:04:07,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:04:07,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:04:07,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:04:07,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:04:07,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:04:07,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:04:07,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:04:07,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:04:07,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:04:07,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:04:07,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:04:07,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:04:07,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:04:07,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:04:07,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:04:07,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:04:07,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:04:07,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:04:07,293 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:04:07,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:04:07,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:04:07,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a9891cd4c5f04616b7fa480ff51a2b34c717470141ef1b888630cca6069f53e [2022-07-12 09:04:07,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:04:07,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:04:07,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:04:07,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:04:07,539 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:04:07,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-12 09:04:07,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f095424/48bd4ab12cc74eb58e5cb3cc6b1840a3/FLAGce07d7ea8 [2022-07-12 09:04:08,254 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:04:08,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-12 09:04:08,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f095424/48bd4ab12cc74eb58e5cb3cc6b1840a3/FLAGce07d7ea8 [2022-07-12 09:04:08,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f095424/48bd4ab12cc74eb58e5cb3cc6b1840a3 [2022-07-12 09:04:08,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:04:08,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:04:08,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:04:08,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:04:08,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:04:08,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:04:08" (1/1) ... [2022-07-12 09:04:08,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ae2635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:08, skipping insertion in model container [2022-07-12 09:04:08,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:04:08" (1/1) ... [2022-07-12 09:04:08,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:04:08,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:04:08,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[6450,6463] [2022-07-12 09:04:08,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[9957,9970] [2022-07-12 09:04:09,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:04:09,485 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:04:09,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[6450,6463] [2022-07-12 09:04:09,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[9957,9970] [2022-07-12 09:04:09,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:04:09,952 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:04:09,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09 WrapperNode [2022-07-12 09:04:09,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:04:09,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:04:09,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:04:09,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:04:09,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,326 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4976 [2022-07-12 09:04:10,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:04:10,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:04:10,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:04:10,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:04:10,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:04:10,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:04:10,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:04:10,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:04:10,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (1/1) ... [2022-07-12 09:04:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:04:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:04:10,824 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 09:04:10,825 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 09:04:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:04:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:04:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:04:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:04:10,986 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:04:10,992 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:04:14,348 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:04:14,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:04:14,367 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:04:14,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:04:14 BoogieIcfgContainer [2022-07-12 09:04:14,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:04:14,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:04:14,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:04:14,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:04:14,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:04:08" (1/3) ... [2022-07-12 09:04:14,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6936f709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:04:14, skipping insertion in model container [2022-07-12 09:04:14,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:04:09" (2/3) ... [2022-07-12 09:04:14,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6936f709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:04:14, skipping insertion in model container [2022-07-12 09:04:14,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:04:14" (3/3) ... [2022-07-12 09:04:14,379 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-12 09:04:14,392 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:04:14,392 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:04:14,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:04:14,453 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@1bea15dc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62e56a9d [2022-07-12 09:04:14,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:04:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 09:04:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 09:04:14,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:14,468 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] [2022-07-12 09:04:14,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2022-07-12 09:04:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:14,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740651855] [2022-07-12 09:04:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:14,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:14,605 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 09:04:14,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:14,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740651855] [2022-07-12 09:04:14,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740651855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:14,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:14,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:04:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139440770] [2022-07-12 09:04:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:14,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:04:14,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:04:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:04:14,636 INFO L87 Difference]: Start difference. First operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:04:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:14,744 INFO L93 Difference]: Finished difference Result 1736 states and 3296 transitions. [2022-07-12 09:04:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:04:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-12 09:04:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:14,761 INFO L225 Difference]: With dead ends: 1736 [2022-07-12 09:04:14,761 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 09:04:14,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:04:14,771 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:14,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:14,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 09:04:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-12 09:04:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8916256157635467) internal successors, (1536), 813 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 09:04:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1536 transitions. [2022-07-12 09:04:14,833 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1536 transitions. Word has length 26 [2022-07-12 09:04:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:14,833 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1536 transitions. [2022-07-12 09:04:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:04:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1536 transitions. [2022-07-12 09:04:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 09:04:14,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:14,835 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] [2022-07-12 09:04:14,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:04:14,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2022-07-12 09:04:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:14,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729194875] [2022-07-12 09:04:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:14,919 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 09:04:14,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729194875] [2022-07-12 09:04:14,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729194875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:14,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:04:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111401879] [2022-07-12 09:04:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:14,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:14,929 INFO L87 Difference]: Start difference. First operand 814 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:04:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:15,074 INFO L93 Difference]: Finished difference Result 856 states and 1599 transitions. [2022-07-12 09:04:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:04:15,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-12 09:04:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:15,090 INFO L225 Difference]: With dead ends: 856 [2022-07-12 09:04:15,097 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 09:04:15,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:04:15,099 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:15,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 09:04:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-12 09:04:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8719211822660098) internal successors, (1520), 813 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 09:04:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1520 transitions. [2022-07-12 09:04:15,119 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1520 transitions. Word has length 26 [2022-07-12 09:04:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:15,120 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1520 transitions. [2022-07-12 09:04:15,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:04:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1520 transitions. [2022-07-12 09:04:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 09:04:15,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:15,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:15,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:04:15,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1008444205, now seen corresponding path program 1 times [2022-07-12 09:04:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:15,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458335289] [2022-07-12 09:04:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:15,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:15,212 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 09:04:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:15,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458335289] [2022-07-12 09:04:15,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458335289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:15,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:15,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:04:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191296138] [2022-07-12 09:04:15,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:15,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:15,215 INFO L87 Difference]: Start difference. First operand 814 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:18,352 INFO L93 Difference]: Finished difference Result 2318 states and 4393 transitions. [2022-07-12 09:04:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:18,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-12 09:04:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:18,358 INFO L225 Difference]: With dead ends: 2318 [2022-07-12 09:04:18,358 INFO L226 Difference]: Without dead ends: 1565 [2022-07-12 09:04:18,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:18,362 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 869 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:18,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 509 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 09:04:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-07-12 09:04:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-07-12 09:04:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states 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 09:04:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2547 transitions. [2022-07-12 09:04:18,396 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2547 transitions. Word has length 30 [2022-07-12 09:04:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:18,396 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2547 transitions. [2022-07-12 09:04:18,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2022-07-12 09:04:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 09:04:18,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:18,398 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] [2022-07-12 09:04:18,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:04:18,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2022-07-12 09:04:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:18,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254572882] [2022-07-12 09:04:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:18,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:18,485 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 09:04:18,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254572882] [2022-07-12 09:04:18,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254572882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:18,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:18,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:04:18,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224317730] [2022-07-12 09:04:18,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:18,490 INFO L87 Difference]: Start difference. First operand 1565 states and 2547 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:04:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:18,517 INFO L93 Difference]: Finished difference Result 1635 states and 2655 transitions. [2022-07-12 09:04:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-12 09:04:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:18,524 INFO L225 Difference]: With dead ends: 1635 [2022-07-12 09:04:18,524 INFO L226 Difference]: Without dead ends: 1597 [2022-07-12 09:04:18,524 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 09:04:18,525 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1484 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:18,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1610 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2022-07-12 09:04:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1595. [2022-07-12 09:04:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states 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 09:04:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2594 transitions. [2022-07-12 09:04:18,554 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2594 transitions. Word has length 41 [2022-07-12 09:04:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:18,554 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2594 transitions. [2022-07-12 09:04:18,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:04:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2594 transitions. [2022-07-12 09:04:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 09:04:18,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:18,556 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] [2022-07-12 09:04:18,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:04:18,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2022-07-12 09:04:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442585923] [2022-07-12 09:04:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:18,599 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 09:04:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442585923] [2022-07-12 09:04:18,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442585923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:18,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:18,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:04:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218393229] [2022-07-12 09:04:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:18,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:18,602 INFO L87 Difference]: Start difference. First operand 1595 states and 2594 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:04:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:18,631 INFO L93 Difference]: Finished difference Result 1719 states and 2786 transitions. [2022-07-12 09:04:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-12 09:04:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:18,638 INFO L225 Difference]: With dead ends: 1719 [2022-07-12 09:04:18,638 INFO L226 Difference]: Without dead ends: 1651 [2022-07-12 09:04:18,639 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 09:04:18,640 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:18,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2022-07-12 09:04:18,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2022-07-12 09:04:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states 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 09:04:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2677 transitions. [2022-07-12 09:04:18,671 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2677 transitions. Word has length 41 [2022-07-12 09:04:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:18,678 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2677 transitions. [2022-07-12 09:04:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:04:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2677 transitions. [2022-07-12 09:04:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 09:04:18,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:18,685 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] [2022-07-12 09:04:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:04:18,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2022-07-12 09:04:18,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:18,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756962909] [2022-07-12 09:04:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:18,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:18,762 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 09:04:18,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:18,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756962909] [2022-07-12 09:04:18,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756962909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:18,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:18,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:04:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593811477] [2022-07-12 09:04:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:18,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:18,764 INFO L87 Difference]: Start difference. First operand 1649 states and 2677 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:04:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:18,872 INFO L93 Difference]: Finished difference Result 2381 states and 3811 transitions. [2022-07-12 09:04:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:04:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-12 09:04:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:18,882 INFO L225 Difference]: With dead ends: 2381 [2022-07-12 09:04:18,882 INFO L226 Difference]: Without dead ends: 2259 [2022-07-12 09:04:18,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:04:18,884 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 4693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 1934 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:18,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2022-07-12 09:04:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1769. [2022-07-12 09:04:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states 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 09:04:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2857 transitions. [2022-07-12 09:04:18,926 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2857 transitions. Word has length 41 [2022-07-12 09:04:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:18,926 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2857 transitions. [2022-07-12 09:04:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:04:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2857 transitions. [2022-07-12 09:04:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 09:04:18,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:18,927 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] [2022-07-12 09:04:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:04:18,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2022-07-12 09:04:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:18,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5327836] [2022-07-12 09:04:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:18,963 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 09:04:18,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:18,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5327836] [2022-07-12 09:04:18,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5327836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:18,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:18,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:04:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512203005] [2022-07-12 09:04:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:18,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:18,966 INFO L87 Difference]: Start difference. First operand 1769 states and 2857 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 09:04:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:19,015 INFO L93 Difference]: Finished difference Result 2209 states and 3519 transitions. [2022-07-12 09:04:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:19,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-12 09:04:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:19,024 INFO L225 Difference]: With dead ends: 2209 [2022-07-12 09:04:19,024 INFO L226 Difference]: Without dead ends: 1967 [2022-07-12 09:04:19,025 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 09:04:19,025 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1471 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:19,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1569 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-07-12 09:04:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1957. [2022-07-12 09:04:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states 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 09:04:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3121 transitions. [2022-07-12 09:04:19,075 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3121 transitions. Word has length 43 [2022-07-12 09:04:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:19,076 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3121 transitions. [2022-07-12 09:04:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 09:04:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3121 transitions. [2022-07-12 09:04:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 09:04:19,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:19,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:04:19,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2022-07-12 09:04:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:19,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492707922] [2022-07-12 09:04:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:19,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:19,158 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 09:04:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:19,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492707922] [2022-07-12 09:04:19,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492707922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:19,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:19,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:04:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704737923] [2022-07-12 09:04:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:19,160 INFO L87 Difference]: Start difference. First operand 1957 states and 3121 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 09:04:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:19,259 INFO L93 Difference]: Finished difference Result 2389 states and 3755 transitions. [2022-07-12 09:04:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:04:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-12 09:04:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:19,267 INFO L225 Difference]: With dead ends: 2389 [2022-07-12 09:04:19,267 INFO L226 Difference]: Without dead ends: 1959 [2022-07-12 09:04:19,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:04:19,268 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 1531 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:19,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1680 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-07-12 09:04:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2022-07-12 09:04:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states 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 09:04:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3113 transitions. [2022-07-12 09:04:19,368 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3113 transitions. Word has length 43 [2022-07-12 09:04:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:19,368 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3113 transitions. [2022-07-12 09:04:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 09:04:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3113 transitions. [2022-07-12 09:04:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:04:19,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:19,370 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] [2022-07-12 09:04:19,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:04:19,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2022-07-12 09:04:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:19,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246283945] [2022-07-12 09:04:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:19,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246283945] [2022-07-12 09:04:19,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246283945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:19,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:19,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:04:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990529885] [2022-07-12 09:04:19,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:04:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:04:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:04:19,451 INFO L87 Difference]: Start difference. First operand 1957 states and 3113 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 09:04:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:19,641 INFO L93 Difference]: Finished difference Result 2291 states and 3585 transitions. [2022-07-12 09:04:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:04:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-12 09:04:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:19,651 INFO L225 Difference]: With dead ends: 2291 [2022-07-12 09:04:19,651 INFO L226 Difference]: Without dead ends: 2289 [2022-07-12 09:04:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:04:19,654 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 396 mSDsluCounter, 8921 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 10473 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:19,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 10473 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-07-12 09:04:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1981. [2022-07-12 09:04:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1979 states have (on average 1.583122789287519) internal successors, (3133), 1980 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states 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 09:04:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3133 transitions. [2022-07-12 09:04:19,725 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3133 transitions. Word has length 44 [2022-07-12 09:04:19,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:19,726 INFO L495 AbstractCegarLoop]: Abstraction has 1981 states and 3133 transitions. [2022-07-12 09:04:19,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 09:04:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3133 transitions. [2022-07-12 09:04:19,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:04:19,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:19,728 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] [2022-07-12 09:04:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:04:19,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2022-07-12 09:04:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:19,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884429153] [2022-07-12 09:04:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:19,790 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 09:04:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884429153] [2022-07-12 09:04:19,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884429153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:19,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:19,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:04:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559905001] [2022-07-12 09:04:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:19,793 INFO L87 Difference]: Start difference. First operand 1981 states and 3133 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 09:04:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:19,870 INFO L93 Difference]: Finished difference Result 2452 states and 3811 transitions. [2022-07-12 09:04:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:19,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-07-12 09:04:19,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:19,879 INFO L225 Difference]: With dead ends: 2452 [2022-07-12 09:04:19,879 INFO L226 Difference]: Without dead ends: 2185 [2022-07-12 09:04:19,881 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 09:04:19,881 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1485 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:19,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2022-07-12 09:04:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2183. [2022-07-12 09:04:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2181 states have (on average 1.5639614855570838) internal successors, (3411), 2182 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states 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 09:04:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3411 transitions. [2022-07-12 09:04:19,977 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3411 transitions. Word has length 45 [2022-07-12 09:04:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:19,977 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 3411 transitions. [2022-07-12 09:04:19,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 09:04:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3411 transitions. [2022-07-12 09:04:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:04:19,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:19,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:19,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:04:19,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash -393288849, now seen corresponding path program 1 times [2022-07-12 09:04:19,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:19,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072543565] [2022-07-12 09:04:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 09:04:20,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:20,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072543565] [2022-07-12 09:04:20,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072543565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:20,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:20,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:04:20,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224939876] [2022-07-12 09:04:20,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:20,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:20,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:20,041 INFO L87 Difference]: Start difference. First operand 2183 states and 3411 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 09:04:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:20,281 INFO L93 Difference]: Finished difference Result 4287 states and 6363 transitions. [2022-07-12 09:04:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:04:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 64 [2022-07-12 09:04:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:20,295 INFO L225 Difference]: With dead ends: 4287 [2022-07-12 09:04:20,295 INFO L226 Difference]: Without dead ends: 3633 [2022-07-12 09:04:20,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:04:20,298 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3088 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:20,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3088 Valid, 3191 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-07-12 09:04:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 2835. [2022-07-12 09:04:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2833 states have (on average 1.524532297917402) internal successors, (4319), 2834 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states 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 09:04:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4319 transitions. [2022-07-12 09:04:20,423 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4319 transitions. Word has length 64 [2022-07-12 09:04:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:20,424 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 4319 transitions. [2022-07-12 09:04:20,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 09:04:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4319 transitions. [2022-07-12 09:04:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:04:20,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:20,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:20,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:04:20,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2132895631, now seen corresponding path program 1 times [2022-07-12 09:04:20,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:20,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273289361] [2022-07-12 09:04:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:20,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 09:04:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:20,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273289361] [2022-07-12 09:04:20,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273289361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:20,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:20,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:04:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511793628] [2022-07-12 09:04:20,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:20,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:20,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:20,490 INFO L87 Difference]: Start difference. First operand 2835 states and 4319 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 09:04:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:20,729 INFO L93 Difference]: Finished difference Result 4939 states and 7271 transitions. [2022-07-12 09:04:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:04:20,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 64 [2022-07-12 09:04:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:20,745 INFO L225 Difference]: With dead ends: 4939 [2022-07-12 09:04:20,746 INFO L226 Difference]: Without dead ends: 4285 [2022-07-12 09:04:20,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:04:20,749 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3082 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:20,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3082 Valid, 3206 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2022-07-12 09:04:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3815. [2022-07-12 09:04:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3813 states have (on average 1.4872803566745345) internal successors, (5671), 3814 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states 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 09:04:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5671 transitions. [2022-07-12 09:04:21,030 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5671 transitions. Word has length 64 [2022-07-12 09:04:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:21,031 INFO L495 AbstractCegarLoop]: Abstraction has 3815 states and 5671 transitions. [2022-07-12 09:04:21,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 09:04:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5671 transitions. [2022-07-12 09:04:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:04:21,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:21,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:21,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:04:21,033 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1342668761, now seen corresponding path program 1 times [2022-07-12 09:04:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:21,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806732824] [2022-07-12 09:04:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:21,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:21,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806732824] [2022-07-12 09:04:21,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806732824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:21,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:21,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:04:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859614265] [2022-07-12 09:04:21,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:21,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:21,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:21,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:21,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:21,078 INFO L87 Difference]: Start difference. First operand 3815 states and 5671 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 09:04:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:21,225 INFO L93 Difference]: Finished difference Result 5465 states and 7995 transitions. [2022-07-12 09:04:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:21,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 09:04:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:21,233 INFO L225 Difference]: With dead ends: 5465 [2022-07-12 09:04:21,234 INFO L226 Difference]: Without dead ends: 3179 [2022-07-12 09:04:21,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:21,238 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 36 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:21,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3048 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-07-12 09:04:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3177. [2022-07-12 09:04:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3175 states have (on average 1.506771653543307) internal successors, (4784), 3176 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states 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 09:04:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 4784 transitions. [2022-07-12 09:04:21,388 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 4784 transitions. Word has length 66 [2022-07-12 09:04:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:21,389 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 4784 transitions. [2022-07-12 09:04:21,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 09:04:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 4784 transitions. [2022-07-12 09:04:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:04:21,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:21,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:21,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:04:21,391 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:21,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash -366937100, now seen corresponding path program 1 times [2022-07-12 09:04:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:21,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843308291] [2022-07-12 09:04:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:21,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:04:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:21,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843308291] [2022-07-12 09:04:21,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843308291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:21,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:21,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:04:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416369810] [2022-07-12 09:04:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:21,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:21,447 INFO L87 Difference]: Start difference. First operand 3177 states and 4784 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 09:04:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:21,669 INFO L93 Difference]: Finished difference Result 4577 states and 6756 transitions. [2022-07-12 09:04:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:04:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 66 [2022-07-12 09:04:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:21,679 INFO L225 Difference]: With dead ends: 4577 [2022-07-12 09:04:21,679 INFO L226 Difference]: Without dead ends: 4111 [2022-07-12 09:04:21,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:04:21,681 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3076 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:21,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3076 Valid, 3207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2022-07-12 09:04:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 3641. [2022-07-12 09:04:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 3639 states have (on average 1.4927177796097828) internal successors, (5432), 3640 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states 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 09:04:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5432 transitions. [2022-07-12 09:04:21,926 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5432 transitions. Word has length 66 [2022-07-12 09:04:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:21,926 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 5432 transitions. [2022-07-12 09:04:21,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 09:04:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5432 transitions. [2022-07-12 09:04:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:04:21,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:21,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:21,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:04:21,932 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887140, now seen corresponding path program 1 times [2022-07-12 09:04:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816475333] [2022-07-12 09:04:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:22,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:22,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816475333] [2022-07-12 09:04:22,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816475333] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:04:22,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409734549] [2022-07-12 09:04:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:04:22,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:04:22,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:04:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:22,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 09:04:22,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:04:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:04:22,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:04:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:04:22,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409734549] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:04:22,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:04:22,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-12 09:04:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725811109] [2022-07-12 09:04:22,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:04:22,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:04:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:04:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:04:22,681 INFO L87 Difference]: Start difference. First operand 3641 states and 5432 transitions. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 09:04:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:27,950 INFO L93 Difference]: Finished difference Result 24021 states and 33277 transitions. [2022-07-12 09:04:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-12 09:04:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 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 67 [2022-07-12 09:04:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:28,046 INFO L225 Difference]: With dead ends: 24021 [2022-07-12 09:04:28,047 INFO L226 Difference]: Without dead ends: 21931 [2022-07-12 09:04:28,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4630 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2148, Invalid=10062, Unknown=0, NotChecked=0, Total=12210 [2022-07-12 09:04:28,060 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 15474 mSDsluCounter, 5202 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15474 SdHoareTripleChecker+Valid, 6757 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:28,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15474 Valid, 6757 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:04:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21931 states. [2022-07-12 09:04:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21931 to 12554. [2022-07-12 09:04:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 12552 states have (on average 1.3710165710643722) internal successors, (17209), 12553 states have internal predecessors, (17209), 0 states have call successors, (0), 0 states 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 09:04:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 17209 transitions. [2022-07-12 09:04:29,129 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 17209 transitions. Word has length 67 [2022-07-12 09:04:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:29,130 INFO L495 AbstractCegarLoop]: Abstraction has 12554 states and 17209 transitions. [2022-07-12 09:04:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 09:04:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 17209 transitions. [2022-07-12 09:04:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:04:29,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:29,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:29,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:04:29,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 09:04:29,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash 620602156, now seen corresponding path program 1 times [2022-07-12 09:04:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:29,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216959456] [2022-07-12 09:04:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:29,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:29,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216959456] [2022-07-12 09:04:29,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216959456] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:04:29,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179362979] [2022-07-12 09:04:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:29,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:29,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:04:29,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:04:29,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:04:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:29,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:04:29,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:04:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:30,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:04:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:30,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179362979] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:04:30,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:04:30,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-07-12 09:04:30,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129397487] [2022-07-12 09:04:30,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:04:30,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 09:04:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 09:04:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-12 09:04:30,482 INFO L87 Difference]: Start difference. First operand 12554 states and 17209 transitions. Second operand has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 09:04:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:47,195 INFO L93 Difference]: Finished difference Result 145542 states and 190775 transitions. [2022-07-12 09:04:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-07-12 09:04:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 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 68 [2022-07-12 09:04:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:47,519 INFO L225 Difference]: With dead ends: 145542 [2022-07-12 09:04:47,519 INFO L226 Difference]: Without dead ends: 135357 [2022-07-12 09:04:47,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3558, Invalid=20934, Unknown=0, NotChecked=0, Total=24492 [2022-07-12 09:04:47,574 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 20986 mSDsluCounter, 10459 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20986 SdHoareTripleChecker+Valid, 12081 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:47,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20986 Valid, 12081 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:04:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135357 states. [2022-07-12 09:04:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135357 to 54011. [2022-07-12 09:04:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54011 states, 54009 states have (on average 1.3203725305041751) internal successors, (71312), 54010 states have internal predecessors, (71312), 0 states have call successors, (0), 0 states 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 09:04:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54011 states to 54011 states and 71312 transitions. [2022-07-12 09:04:54,183 INFO L78 Accepts]: Start accepts. Automaton has 54011 states and 71312 transitions. Word has length 68 [2022-07-12 09:04:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:54,183 INFO L495 AbstractCegarLoop]: Abstraction has 54011 states and 71312 transitions. [2022-07-12 09:04:54,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 09:04:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 54011 states and 71312 transitions. [2022-07-12 09:04:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:04:54,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:54,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:54,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:04:54,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 09:04:54,399 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1702537876, now seen corresponding path program 1 times [2022-07-12 09:04:54,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539522453] [2022-07-12 09:04:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:54,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:54,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539522453] [2022-07-12 09:04:54,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539522453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:54,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:54,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:04:54,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132028176] [2022-07-12 09:04:54,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:54,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:54,444 INFO L87 Difference]: Start difference. First operand 54011 states and 71312 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 09:04:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:57,607 INFO L93 Difference]: Finished difference Result 78449 states and 102855 transitions. [2022-07-12 09:04:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-12 09:04:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:57,664 INFO L225 Difference]: With dead ends: 78449 [2022-07-12 09:04:57,664 INFO L226 Difference]: Without dead ends: 31369 [2022-07-12 09:04:57,705 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 09:04:57,706 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 26 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:57,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3030 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:04:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31369 states. [2022-07-12 09:05:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31369 to 30941. [2022-07-12 09:05:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30941 states, 30939 states have (on average 1.28963444196645) internal successors, (39900), 30940 states have internal predecessors, (39900), 0 states have call successors, (0), 0 states 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 09:05:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30941 states to 30941 states and 39900 transitions. [2022-07-12 09:05:01,074 INFO L78 Accepts]: Start accepts. Automaton has 30941 states and 39900 transitions. Word has length 68 [2022-07-12 09:05:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:01,075 INFO L495 AbstractCegarLoop]: Abstraction has 30941 states and 39900 transitions. [2022-07-12 09:05:01,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 09:05:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 30941 states and 39900 transitions. [2022-07-12 09:05:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:05:01,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:01,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:01,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:05:01,078 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash 455030260, now seen corresponding path program 1 times [2022-07-12 09:05:01,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:01,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883709251] [2022-07-12 09:05:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:01,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883709251] [2022-07-12 09:05:01,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883709251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:05:01,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:05:01,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:05:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198607392] [2022-07-12 09:05:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:05:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:05:01,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:05:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:05:01,117 INFO L87 Difference]: Start difference. First operand 30941 states and 39900 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 09:05:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:02,984 INFO L93 Difference]: Finished difference Result 46927 states and 60114 transitions. [2022-07-12 09:05:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:05:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-12 09:05:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:03,009 INFO L225 Difference]: With dead ends: 46927 [2022-07-12 09:05:03,009 INFO L226 Difference]: Without dead ends: 20863 [2022-07-12 09:05:03,023 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 09:05:03,023 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 20 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:03,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:05:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20863 states. [2022-07-12 09:05:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20863 to 20861. [2022-07-12 09:05:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20861 states, 20859 states have (on average 1.2684692458890647) internal successors, (26459), 20860 states have internal predecessors, (26459), 0 states have call successors, (0), 0 states 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 09:05:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 26459 transitions. [2022-07-12 09:05:05,105 INFO L78 Accepts]: Start accepts. Automaton has 20861 states and 26459 transitions. Word has length 68 [2022-07-12 09:05:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:05,105 INFO L495 AbstractCegarLoop]: Abstraction has 20861 states and 26459 transitions. [2022-07-12 09:05:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 09:05:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 20861 states and 26459 transitions. [2022-07-12 09:05:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:05:05,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:05,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:05:05,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 530169440, now seen corresponding path program 1 times [2022-07-12 09:05:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:05,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400502536] [2022-07-12 09:05:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:05:05,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400502536] [2022-07-12 09:05:05,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400502536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:05:05,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:05:05,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:05:05,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600791388] [2022-07-12 09:05:05,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:05:05,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:05:05,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:05,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:05:05,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:05:05,157 INFO L87 Difference]: Start difference. First operand 20861 states and 26459 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 09:05:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:06,874 INFO L93 Difference]: Finished difference Result 36624 states and 46184 transitions. [2022-07-12 09:05:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:05:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 68 [2022-07-12 09:05:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:06,893 INFO L225 Difference]: With dead ends: 36624 [2022-07-12 09:05:06,893 INFO L226 Difference]: Without dead ends: 17377 [2022-07-12 09:05:06,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:05:06,907 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4553 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:06,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 2957 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:05:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17377 states. [2022-07-12 09:05:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17377 to 17377. [2022-07-12 09:05:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17377 states, 17375 states have (on average 1.2587625899280575) internal successors, (21871), 17376 states have internal predecessors, (21871), 0 states have call successors, (0), 0 states 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 09:05:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17377 states to 17377 states and 21871 transitions. [2022-07-12 09:05:08,632 INFO L78 Accepts]: Start accepts. Automaton has 17377 states and 21871 transitions. Word has length 68 [2022-07-12 09:05:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:08,633 INFO L495 AbstractCegarLoop]: Abstraction has 17377 states and 21871 transitions. [2022-07-12 09:05:08,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 09:05:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17377 states and 21871 transitions. [2022-07-12 09:05:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:05:08,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:08,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:08,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:05:08,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1360814688, now seen corresponding path program 1 times [2022-07-12 09:05:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414188438] [2022-07-12 09:05:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 09:05:08,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414188438] [2022-07-12 09:05:08,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414188438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:05:08,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:05:08,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:05:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697973307] [2022-07-12 09:05:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:05:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:05:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:05:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:05:08,693 INFO L87 Difference]: Start difference. First operand 17377 states and 21871 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 09:05:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:10,114 INFO L93 Difference]: Finished difference Result 28988 states and 36122 transitions. [2022-07-12 09:05:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:05:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 68 [2022-07-12 09:05:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:10,132 INFO L225 Difference]: With dead ends: 28988 [2022-07-12 09:05:10,132 INFO L226 Difference]: Without dead ends: 13257 [2022-07-12 09:05:10,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:05:10,148 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4513 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:10,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4513 Valid, 2962 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:05:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13257 states. [2022-07-12 09:05:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13257 to 13257. [2022-07-12 09:05:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 13255 states have (on average 1.2516031686156168) internal successors, (16590), 13256 states have internal predecessors, (16590), 0 states have call successors, (0), 0 states 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 09:05:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 16590 transitions. [2022-07-12 09:05:11,467 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 16590 transitions. Word has length 68 [2022-07-12 09:05:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:11,467 INFO L495 AbstractCegarLoop]: Abstraction has 13257 states and 16590 transitions. [2022-07-12 09:05:11,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 09:05:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 16590 transitions. [2022-07-12 09:05:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:05:11,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:11,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:05:11,469 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1355942016, now seen corresponding path program 1 times [2022-07-12 09:05:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:11,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125372095] [2022-07-12 09:05:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:05:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:11,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125372095] [2022-07-12 09:05:11,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125372095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:05:11,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:05:11,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:05:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287191116] [2022-07-12 09:05:11,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:05:11,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:05:11,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:05:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:05:11,508 INFO L87 Difference]: Start difference. First operand 13257 states and 16590 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 09:05:12,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:12,592 INFO L93 Difference]: Finished difference Result 22263 states and 27515 transitions. [2022-07-12 09:05:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:05:12,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 68 [2022-07-12 09:05:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:12,604 INFO L225 Difference]: With dead ends: 22263 [2022-07-12 09:05:12,605 INFO L226 Difference]: Without dead ends: 10573 [2022-07-12 09:05:12,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:05:12,613 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4563 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:12,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4563 Valid, 2953 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:05:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2022-07-12 09:05:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 10573. [2022-07-12 09:05:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10573 states, 10571 states have (on average 1.2554157600983824) internal successors, (13271), 10572 states have internal predecessors, (13271), 0 states have call successors, (0), 0 states 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 09:05:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 13271 transitions. [2022-07-12 09:05:13,748 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 13271 transitions. Word has length 68 [2022-07-12 09:05:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:13,748 INFO L495 AbstractCegarLoop]: Abstraction has 10573 states and 13271 transitions. [2022-07-12 09:05:13,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 09:05:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 13271 transitions. [2022-07-12 09:05:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 09:05:13,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:13,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:13,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:05:13,750 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:13,750 INFO L85 PathProgramCache]: Analyzing trace with hash -576881103, now seen corresponding path program 1 times [2022-07-12 09:05:13,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:13,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080173002] [2022-07-12 09:05:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:13,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:14,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080173002] [2022-07-12 09:05:14,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080173002] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:05:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604811469] [2022-07-12 09:05:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:14,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:05:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:05:14,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:05:14,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:05:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:14,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 09:05:14,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:05:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:15,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:05:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:16,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604811469] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:05:16,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:05:16,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2022-07-12 09:05:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317298388] [2022-07-12 09:05:16,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:05:16,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 09:05:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 09:05:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-07-12 09:05:16,084 INFO L87 Difference]: Start difference. First operand 10573 states and 13271 transitions. Second operand has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 09:05:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:25,478 INFO L93 Difference]: Finished difference Result 20253 states and 24694 transitions. [2022-07-12 09:05:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-12 09:05:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 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 69 [2022-07-12 09:05:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:25,497 INFO L225 Difference]: With dead ends: 20253 [2022-07-12 09:05:25,497 INFO L226 Difference]: Without dead ends: 14429 [2022-07-12 09:05:25,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3273 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1888, Invalid=9884, Unknown=0, NotChecked=0, Total=11772 [2022-07-12 09:05:25,506 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 13539 mSDsluCounter, 22697 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13539 SdHoareTripleChecker+Valid, 24430 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:25,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13539 Valid, 24430 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:05:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14429 states. [2022-07-12 09:05:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 7419. [2022-07-12 09:05:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7419 states, 7417 states have (on average 1.2797627072940543) internal successors, (9492), 7418 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states 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 09:05:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7419 states to 7419 states and 9492 transitions. [2022-07-12 09:05:26,547 INFO L78 Accepts]: Start accepts. Automaton has 7419 states and 9492 transitions. Word has length 69 [2022-07-12 09:05:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:26,547 INFO L495 AbstractCegarLoop]: Abstraction has 7419 states and 9492 transitions. [2022-07-12 09:05:26,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 09:05:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7419 states and 9492 transitions. [2022-07-12 09:05:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 09:05:26,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:26,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:26,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:05:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:05:26,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash 220837411, now seen corresponding path program 1 times [2022-07-12 09:05:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:26,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222174268] [2022-07-12 09:05:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:26,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222174268] [2022-07-12 09:05:27,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222174268] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:05:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901037246] [2022-07-12 09:05:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:27,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:05:27,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:05:27,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:05:27,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:05:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:27,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 09:05:27,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:05:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:29,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:05:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:35,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901037246] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:05:35,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:05:35,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 19] total 52 [2022-07-12 09:05:35,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084808500] [2022-07-12 09:05:35,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:05:35,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-12 09:05:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-12 09:05:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2355, Unknown=0, NotChecked=0, Total=2652 [2022-07-12 09:05:35,141 INFO L87 Difference]: Start difference. First operand 7419 states and 9492 transitions. Second operand has 52 states, 52 states have (on average 3.6153846153846154) internal successors, (188), 52 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 09:05:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:44,711 INFO L93 Difference]: Finished difference Result 15636 states and 19131 transitions. [2022-07-12 09:05:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-07-12 09:05:44,712 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.6153846153846154) internal successors, (188), 52 states have internal predecessors, (188), 0 states have call successors, (0), 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 70 [2022-07-12 09:05:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:44,725 INFO L225 Difference]: With dead ends: 15636 [2022-07-12 09:05:44,725 INFO L226 Difference]: Without dead ends: 11964 [2022-07-12 09:05:44,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4270 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2860, Invalid=14696, Unknown=0, NotChecked=0, Total=17556 [2022-07-12 09:05:44,733 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 28718 mSDsluCounter, 33175 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28718 SdHoareTripleChecker+Valid, 34867 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:44,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28718 Valid, 34867 Invalid, 2126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [250 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:05:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2022-07-12 09:05:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 5699. [2022-07-12 09:05:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5697 states have (on average 1.3038441284886781) internal successors, (7428), 5698 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states 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 09:05:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 7428 transitions. [2022-07-12 09:05:45,464 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 7428 transitions. Word has length 70 [2022-07-12 09:05:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:45,464 INFO L495 AbstractCegarLoop]: Abstraction has 5699 states and 7428 transitions. [2022-07-12 09:05:45,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.6153846153846154) internal successors, (188), 52 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 09:05:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 7428 transitions. [2022-07-12 09:05:45,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:05:45,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:45,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:45,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:05:45,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:05:45,688 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1036321559, now seen corresponding path program 1 times [2022-07-12 09:05:45,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120544875] [2022-07-12 09:05:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:05:45,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:45,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120544875] [2022-07-12 09:05:45,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120544875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:05:45,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:05:45,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:05:45,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220979771] [2022-07-12 09:05:45,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:05:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:05:45,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:45,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:05:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:05:45,732 INFO L87 Difference]: Start difference. First operand 5699 states and 7428 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:05:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:49,042 INFO L93 Difference]: Finished difference Result 8705 states and 12355 transitions. [2022-07-12 09:05:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:05:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-12 09:05:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:49,049 INFO L225 Difference]: With dead ends: 8705 [2022-07-12 09:05:49,049 INFO L226 Difference]: Without dead ends: 7201 [2022-07-12 09:05:49,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:05:49,050 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 803 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:49,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 553 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:05:49,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2022-07-12 09:05:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7201. [2022-07-12 09:05:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7201 states, 7199 states have (on average 1.2846228642867066) internal successors, (9248), 7200 states have internal predecessors, (9248), 0 states have call successors, (0), 0 states 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 09:05:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7201 states to 7201 states and 9248 transitions. [2022-07-12 09:05:49,775 INFO L78 Accepts]: Start accepts. Automaton has 7201 states and 9248 transitions. Word has length 101 [2022-07-12 09:05:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:49,776 INFO L495 AbstractCegarLoop]: Abstraction has 7201 states and 9248 transitions. [2022-07-12 09:05:49,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:05:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7201 states and 9248 transitions. [2022-07-12 09:05:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 09:05:49,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:49,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:05:49,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:05:49,777 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1858759501, now seen corresponding path program 1 times [2022-07-12 09:05:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:49,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97916718] [2022-07-12 09:05:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:49,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:49,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:49,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97916718] [2022-07-12 09:05:49,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97916718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:05:49,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:05:49,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:05:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694754084] [2022-07-12 09:05:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:05:49,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:05:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:05:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:05:49,815 INFO L87 Difference]: Start difference. First operand 7201 states and 9248 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 09:05:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:05:53,213 INFO L93 Difference]: Finished difference Result 13213 states and 17816 transitions. [2022-07-12 09:05:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:05:53,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-07-12 09:05:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:05:53,224 INFO L225 Difference]: With dead ends: 13213 [2022-07-12 09:05:53,224 INFO L226 Difference]: Without dead ends: 10207 [2022-07-12 09:05:53,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:05:53,228 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 993 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:05:53,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 661 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:05:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10207 states. [2022-07-12 09:05:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10207 to 10205. [2022-07-12 09:05:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 10203 states have (on average 1.269136528472018) internal successors, (12949), 10204 states have internal predecessors, (12949), 0 states have call successors, (0), 0 states 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 09:05:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 12949 transitions. [2022-07-12 09:05:54,067 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 12949 transitions. Word has length 105 [2022-07-12 09:05:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:05:54,068 INFO L495 AbstractCegarLoop]: Abstraction has 10205 states and 12949 transitions. [2022-07-12 09:05:54,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 09:05:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 12949 transitions. [2022-07-12 09:05:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 09:05:54,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:05:54,071 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:05:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:05:54,071 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:05:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:05:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 390075559, now seen corresponding path program 1 times [2022-07-12 09:05:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:05:54,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055757110] [2022-07-12 09:05:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:05:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:54,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:05:54,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055757110] [2022-07-12 09:05:54,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055757110] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:05:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363519216] [2022-07-12 09:05:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:05:54,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:05:54,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:05:54,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:05:54,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:05:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:05:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 09:05:54,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:05:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:55,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:05:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:05:58,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363519216] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:05:58,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:05:58,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 39 [2022-07-12 09:05:58,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030566028] [2022-07-12 09:05:58,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:05:58,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 09:05:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:05:58,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 09:05:58,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 09:05:58,069 INFO L87 Difference]: Start difference. First operand 10205 states and 12949 transitions. Second operand has 40 states, 40 states have (on average 7.325) internal successors, (293), 39 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 09:06:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:06:09,354 INFO L93 Difference]: Finished difference Result 17269 states and 21497 transitions. [2022-07-12 09:06:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-12 09:06:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.325) internal successors, (293), 39 states have internal predecessors, (293), 0 states have call successors, (0), 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 09:06:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:06:09,371 INFO L225 Difference]: With dead ends: 17269 [2022-07-12 09:06:09,371 INFO L226 Difference]: Without dead ends: 14969 [2022-07-12 09:06:09,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2818, Invalid=12932, Unknown=0, NotChecked=0, Total=15750 [2022-07-12 09:06:09,378 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 18294 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18294 SdHoareTripleChecker+Valid, 18010 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:06:09,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18294 Valid, 18010 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:06:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2022-07-12 09:06:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 10205. [2022-07-12 09:06:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 10203 states have (on average 1.2661962167989806) internal successors, (12919), 10204 states have internal predecessors, (12919), 0 states have call successors, (0), 0 states 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 09:06:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 12919 transitions. [2022-07-12 09:06:10,393 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 12919 transitions. Word has length 117 [2022-07-12 09:06:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:06:10,394 INFO L495 AbstractCegarLoop]: Abstraction has 10205 states and 12919 transitions. [2022-07-12 09:06:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.325) internal successors, (293), 39 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 09:06:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 12919 transitions. [2022-07-12 09:06:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 09:06:10,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:06:10,396 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:06:10,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 09:06:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-12 09:06:10,607 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:06:10,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:06:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1396838599, now seen corresponding path program 1 times [2022-07-12 09:06:10,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:06:10,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464878399] [2022-07-12 09:06:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:06:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:06:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:06:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:06:10,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:06:10,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464878399] [2022-07-12 09:06:10,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464878399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:06:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610028306] [2022-07-12 09:06:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:06:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:06:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:06:10,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:06:10,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 09:06:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:06:10,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 09:06:10,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:06:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:06:30,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:06:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:06:31,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610028306] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:06:31,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:06:31,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 38 [2022-07-12 09:06:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695058877] [2022-07-12 09:06:31,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:06:31,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-12 09:06:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:06:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-12 09:06:31,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1281, Unknown=11, NotChecked=0, Total=1406 [2022-07-12 09:06:31,652 INFO L87 Difference]: Start difference. First operand 10205 states and 12919 transitions. Second operand has 38 states, 38 states have (on average 8.763157894736842) internal successors, (333), 38 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)