./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/locks/test_locks_12.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 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:25:03,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:25:03,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:25:03,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:25:03,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:25:03,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:25:03,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:25:03,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:25:03,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:25:03,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:25:03,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:25:03,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:25:03,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:25:03,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:25:03,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:25:03,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:25:03,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:25:03,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:25:03,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:25:03,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:25:03,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:25:03,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:25:03,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:25:03,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:25:03,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:25:03,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:25:03,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:25:03,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:25:03,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:25:03,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:25:03,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:25:03,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:25:03,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:25:03,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:25:03,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:25:03,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:25:03,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:25:03,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:25:03,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:25:03,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:25:03,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:25:03,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:25:03,491 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:25:03,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:25:03,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:25:03,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:25:03,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:25:03,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:25:03,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:25:03,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:25:03,495 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:25:03,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:25:03,496 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:25:03,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:25:03,497 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:25:03,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:25:03,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:25:03,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:25:03,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:25:03,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:25:03,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:25:03,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:25:03,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:25:03,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:25:03,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:25:03,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:25:03,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:25:03,499 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:25:03,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:25:03,499 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:25:03,499 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2023-02-15 19:25:03,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:25:03,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:25:03,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:25:03,734 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:25:03,734 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:25:03,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2023-02-15 19:25:04,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:25:04,774 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:25:04,774 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2023-02-15 19:25:04,782 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bd0cf30/0d5cceda0abf4fadb45271d5e590bf4c/FLAGca238558d [2023-02-15 19:25:04,791 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bd0cf30/0d5cceda0abf4fadb45271d5e590bf4c [2023-02-15 19:25:04,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:25:04,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:25:04,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:25:04,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:25:04,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:25:04,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:04,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155968a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04, skipping insertion in model container [2023-02-15 19:25:04,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:04,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:25:04,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:25:04,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2023-02-15 19:25:04,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:25:04,949 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:25:04,979 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2023-02-15 19:25:04,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:25:04,994 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:25:04,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04 WrapperNode [2023-02-15 19:25:04,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:25:04,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:25:04,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:25:04,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:25:05,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,028 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 160 [2023-02-15 19:25:05,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:25:05,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:25:05,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:25:05,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:25:05,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:25:05,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:25:05,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:25:05,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:25:05,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (1/1) ... [2023-02-15 19:25:05,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:25:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:25:05,106 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) [2023-02-15 19:25:05,128 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 [2023-02-15 19:25:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:25:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:25:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:25:05,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:25:05,188 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:25:05,191 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:25:05,375 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:25:05,379 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:25:05,383 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 19:25:05,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:25:05 BoogieIcfgContainer [2023-02-15 19:25:05,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:25:05,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:25:05,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:25:05,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:25:05,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:25:04" (1/3) ... [2023-02-15 19:25:05,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d6aadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:25:05, skipping insertion in model container [2023-02-15 19:25:05,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:04" (2/3) ... [2023-02-15 19:25:05,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d6aadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:25:05, skipping insertion in model container [2023-02-15 19:25:05,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:25:05" (3/3) ... [2023-02-15 19:25:05,411 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2023-02-15 19:25:05,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:25:05,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:25:05,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:25:05,466 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@52ced6ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:25:05,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:25:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 19:25:05,473 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:05,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:05,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:05,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1341605783, now seen corresponding path program 1 times [2023-02-15 19:25:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716563609] [2023-02-15 19:25:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:05,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716563609] [2023-02-15 19:25:05,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716563609] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:05,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:05,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267119920] [2023-02-15 19:25:05,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:05,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:05,672 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:05,727 INFO L93 Difference]: Finished difference Result 95 states and 169 transitions. [2023-02-15 19:25:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:05,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-15 19:25:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:05,740 INFO L225 Difference]: With dead ends: 95 [2023-02-15 19:25:05,740 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 19:25:05,742 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 [2023-02-15 19:25:05,745 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 163 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 [2023-02-15 19:25:05,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:05,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 19:25:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2023-02-15 19:25:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 102 transitions. [2023-02-15 19:25:05,781 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 102 transitions. Word has length 19 [2023-02-15 19:25:05,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:05,782 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 102 transitions. [2023-02-15 19:25:05,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 102 transitions. [2023-02-15 19:25:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 19:25:05,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:05,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 19:25:05,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash 61742105, now seen corresponding path program 1 times [2023-02-15 19:25:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:05,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72487693] [2023-02-15 19:25:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:05,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:05,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72487693] [2023-02-15 19:25:05,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72487693] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:05,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:05,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417124929] [2023-02-15 19:25:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:05,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:05,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:05,895 INFO L87 Difference]: Start difference. First operand 55 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:05,932 INFO L93 Difference]: Finished difference Result 134 states and 249 transitions. [2023-02-15 19:25:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-15 19:25:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:05,934 INFO L225 Difference]: With dead ends: 134 [2023-02-15 19:25:05,934 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 19:25:05,934 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 [2023-02-15 19:25:05,935 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 58 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:05,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 19:25:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-02-15 19:25:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.8717948717948718) internal successors, (146), 78 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 146 transitions. [2023-02-15 19:25:05,942 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 146 transitions. Word has length 19 [2023-02-15 19:25:05,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:05,942 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 146 transitions. [2023-02-15 19:25:05,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 146 transitions. [2023-02-15 19:25:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:25:05,944 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:05,945 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] [2023-02-15 19:25:05,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 19:25:05,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1359680987, now seen corresponding path program 1 times [2023-02-15 19:25:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:05,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429274325] [2023-02-15 19:25:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:05,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:05,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429274325] [2023-02-15 19:25:05,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429274325] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:05,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:05,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:05,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345536983] [2023-02-15 19:25:05,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:05,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:05,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:05,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:05,982 INFO L87 Difference]: Start difference. First operand 79 states and 146 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:05,994 INFO L93 Difference]: Finished difference Result 123 states and 222 transitions. [2023-02-15 19:25:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-15 19:25:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:05,995 INFO L225 Difference]: With dead ends: 123 [2023-02-15 19:25:05,995 INFO L226 Difference]: Without dead ends: 84 [2023-02-15 19:25:05,996 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 [2023-02-15 19:25:05,996 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 60 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:05,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-15 19:25:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2023-02-15 19:25:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.8271604938271604) internal successors, (148), 81 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 148 transitions. [2023-02-15 19:25:06,002 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 148 transitions. Word has length 20 [2023-02-15 19:25:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,002 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 148 transitions. [2023-02-15 19:25:06,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 148 transitions. [2023-02-15 19:25:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:25:06,003 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,003 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] [2023-02-15 19:25:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 19:25:06,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1914217955, now seen corresponding path program 1 times [2023-02-15 19:25:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085781519] [2023-02-15 19:25:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085781519] [2023-02-15 19:25:06,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085781519] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151539833] [2023-02-15 19:25:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,040 INFO L87 Difference]: Start difference. First operand 82 states and 148 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,051 INFO L93 Difference]: Finished difference Result 157 states and 285 transitions. [2023-02-15 19:25:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-15 19:25:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,053 INFO L225 Difference]: With dead ends: 157 [2023-02-15 19:25:06,053 INFO L226 Difference]: Without dead ends: 155 [2023-02-15 19:25:06,053 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 [2023-02-15 19:25:06,054 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 149 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 [2023-02-15 19:25:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-15 19:25:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2023-02-15 19:25:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.8240740740740742) internal successors, (197), 108 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 197 transitions. [2023-02-15 19:25:06,062 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 197 transitions. Word has length 20 [2023-02-15 19:25:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,062 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 197 transitions. [2023-02-15 19:25:06,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 197 transitions. [2023-02-15 19:25:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:25:06,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,063 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] [2023-02-15 19:25:06,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 19:25:06,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash 634354277, now seen corresponding path program 1 times [2023-02-15 19:25:06,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662648243] [2023-02-15 19:25:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662648243] [2023-02-15 19:25:06,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662648243] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78982927] [2023-02-15 19:25:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,091 INFO L87 Difference]: Start difference. First operand 109 states and 197 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,108 INFO L93 Difference]: Finished difference Result 261 states and 475 transitions. [2023-02-15 19:25:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-15 19:25:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,109 INFO L225 Difference]: With dead ends: 261 [2023-02-15 19:25:06,109 INFO L226 Difference]: Without dead ends: 157 [2023-02-15 19:25:06,110 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 [2023-02-15 19:25:06,111 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-15 19:25:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2023-02-15 19:25:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.8116883116883118) internal successors, (279), 154 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 279 transitions. [2023-02-15 19:25:06,120 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 279 transitions. Word has length 20 [2023-02-15 19:25:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,121 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 279 transitions. [2023-02-15 19:25:06,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 279 transitions. [2023-02-15 19:25:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 19:25:06,122 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,122 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] [2023-02-15 19:25:06,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 19:25:06,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash -788572498, now seen corresponding path program 1 times [2023-02-15 19:25:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740347886] [2023-02-15 19:25:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740347886] [2023-02-15 19:25:06,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740347886] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526614105] [2023-02-15 19:25:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,150 INFO L87 Difference]: Start difference. First operand 155 states and 279 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,159 INFO L93 Difference]: Finished difference Result 234 states and 418 transitions. [2023-02-15 19:25:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-15 19:25:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,160 INFO L225 Difference]: With dead ends: 234 [2023-02-15 19:25:06,160 INFO L226 Difference]: Without dead ends: 159 [2023-02-15 19:25:06,161 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 [2023-02-15 19:25:06,162 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 59 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-15 19:25:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2023-02-15 19:25:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.7884615384615385) internal successors, (279), 156 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2023-02-15 19:25:06,168 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 21 [2023-02-15 19:25:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,169 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2023-02-15 19:25:06,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2023-02-15 19:25:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 19:25:06,169 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,170 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] [2023-02-15 19:25:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 19:25:06,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1809640852, now seen corresponding path program 1 times [2023-02-15 19:25:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309169155] [2023-02-15 19:25:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309169155] [2023-02-15 19:25:06,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309169155] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782438660] [2023-02-15 19:25:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,194 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,204 INFO L93 Difference]: Finished difference Result 453 states and 809 transitions. [2023-02-15 19:25:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-15 19:25:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,206 INFO L225 Difference]: With dead ends: 453 [2023-02-15 19:25:06,206 INFO L226 Difference]: Without dead ends: 303 [2023-02-15 19:25:06,206 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 [2023-02-15 19:25:06,207 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-02-15 19:25:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2023-02-15 19:25:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.77) internal successors, (531), 300 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 531 transitions. [2023-02-15 19:25:06,217 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 531 transitions. Word has length 21 [2023-02-15 19:25:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 531 transitions. [2023-02-15 19:25:06,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 531 transitions. [2023-02-15 19:25:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 19:25:06,218 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,219 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] [2023-02-15 19:25:06,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 19:25:06,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,219 INFO L85 PathProgramCache]: Analyzing trace with hash -529777174, now seen corresponding path program 1 times [2023-02-15 19:25:06,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362292143] [2023-02-15 19:25:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362292143] [2023-02-15 19:25:06,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362292143] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183274633] [2023-02-15 19:25:06,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,245 INFO L87 Difference]: Start difference. First operand 301 states and 531 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,259 INFO L93 Difference]: Finished difference Result 385 states and 685 transitions. [2023-02-15 19:25:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-15 19:25:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,262 INFO L225 Difference]: With dead ends: 385 [2023-02-15 19:25:06,262 INFO L226 Difference]: Without dead ends: 383 [2023-02-15 19:25:06,262 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 [2023-02-15 19:25:06,266 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 52 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-02-15 19:25:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2023-02-15 19:25:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.7566666666666666) internal successors, (527), 300 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 527 transitions. [2023-02-15 19:25:06,275 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 527 transitions. Word has length 21 [2023-02-15 19:25:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,275 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 527 transitions. [2023-02-15 19:25:06,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,276 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 527 transitions. [2023-02-15 19:25:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 19:25:06,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,284 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] [2023-02-15 19:25:06,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 19:25:06,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash -264078182, now seen corresponding path program 1 times [2023-02-15 19:25:06,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762055841] [2023-02-15 19:25:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762055841] [2023-02-15 19:25:06,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762055841] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696988054] [2023-02-15 19:25:06,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,328 INFO L87 Difference]: Start difference. First operand 301 states and 527 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,338 INFO L93 Difference]: Finished difference Result 565 states and 1001 transitions. [2023-02-15 19:25:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-15 19:25:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,342 INFO L225 Difference]: With dead ends: 565 [2023-02-15 19:25:06,342 INFO L226 Difference]: Without dead ends: 563 [2023-02-15 19:25:06,343 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 [2023-02-15 19:25:06,343 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 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 [2023-02-15 19:25:06,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-02-15 19:25:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 417. [2023-02-15 19:25:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.7283653846153846) internal successors, (719), 416 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 719 transitions. [2023-02-15 19:25:06,354 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 719 transitions. Word has length 22 [2023-02-15 19:25:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,354 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 719 transitions. [2023-02-15 19:25:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 719 transitions. [2023-02-15 19:25:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 19:25:06,356 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 19:25:06,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1543941860, now seen corresponding path program 1 times [2023-02-15 19:25:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924409995] [2023-02-15 19:25:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924409995] [2023-02-15 19:25:06,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924409995] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727155095] [2023-02-15 19:25:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,375 INFO L87 Difference]: Start difference. First operand 417 states and 719 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,391 INFO L93 Difference]: Finished difference Result 997 states and 1729 transitions. [2023-02-15 19:25:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-15 19:25:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,393 INFO L225 Difference]: With dead ends: 997 [2023-02-15 19:25:06,393 INFO L226 Difference]: Without dead ends: 587 [2023-02-15 19:25:06,394 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 [2023-02-15 19:25:06,395 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 55 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-02-15 19:25:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2023-02-15 19:25:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.7174657534246576) internal successors, (1003), 584 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1003 transitions. [2023-02-15 19:25:06,412 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1003 transitions. Word has length 22 [2023-02-15 19:25:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,412 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1003 transitions. [2023-02-15 19:25:06,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1003 transitions. [2023-02-15 19:25:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 19:25:06,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,414 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] [2023-02-15 19:25:06,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 19:25:06,414 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash 403724673, now seen corresponding path program 1 times [2023-02-15 19:25:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586765071] [2023-02-15 19:25:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586765071] [2023-02-15 19:25:06,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586765071] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854942432] [2023-02-15 19:25:06,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,441 INFO L87 Difference]: Start difference. First operand 585 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,457 INFO L93 Difference]: Finished difference Result 885 states and 1513 transitions. [2023-02-15 19:25:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-15 19:25:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,459 INFO L225 Difference]: With dead ends: 885 [2023-02-15 19:25:06,459 INFO L226 Difference]: Without dead ends: 599 [2023-02-15 19:25:06,459 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 [2023-02-15 19:25:06,462 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-02-15 19:25:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2023-02-15 19:25:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.6963087248322148) internal successors, (1011), 596 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1011 transitions. [2023-02-15 19:25:06,472 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1011 transitions. Word has length 23 [2023-02-15 19:25:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,472 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1011 transitions. [2023-02-15 19:25:06,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1011 transitions. [2023-02-15 19:25:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 19:25:06,474 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,474 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] [2023-02-15 19:25:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 19:25:06,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash -617343681, now seen corresponding path program 1 times [2023-02-15 19:25:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435497919] [2023-02-15 19:25:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435497919] [2023-02-15 19:25:06,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435497919] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562075598] [2023-02-15 19:25:06,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,514 INFO L87 Difference]: Start difference. First operand 597 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,533 INFO L93 Difference]: Finished difference Result 1097 states and 1885 transitions. [2023-02-15 19:25:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-15 19:25:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,536 INFO L225 Difference]: With dead ends: 1097 [2023-02-15 19:25:06,536 INFO L226 Difference]: Without dead ends: 1095 [2023-02-15 19:25:06,537 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 [2023-02-15 19:25:06,538 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 143 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 [2023-02-15 19:25:06,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 143 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2023-02-15 19:25:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 837. [2023-02-15 19:25:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.6590909090909092) internal successors, (1387), 836 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1387 transitions. [2023-02-15 19:25:06,559 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1387 transitions. Word has length 23 [2023-02-15 19:25:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,559 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1387 transitions. [2023-02-15 19:25:06,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1387 transitions. [2023-02-15 19:25:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 19:25:06,562 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,562 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] [2023-02-15 19:25:06,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 19:25:06,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1897207359, now seen corresponding path program 1 times [2023-02-15 19:25:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784670206] [2023-02-15 19:25:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784670206] [2023-02-15 19:25:06,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784670206] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627562174] [2023-02-15 19:25:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,597 INFO L87 Difference]: Start difference. First operand 837 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,619 INFO L93 Difference]: Finished difference Result 1977 states and 3293 transitions. [2023-02-15 19:25:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-15 19:25:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,623 INFO L225 Difference]: With dead ends: 1977 [2023-02-15 19:25:06,623 INFO L226 Difference]: Without dead ends: 1159 [2023-02-15 19:25:06,624 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 [2023-02-15 19:25:06,626 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 54 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-02-15 19:25:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2023-02-15 19:25:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.6496539792387543) internal successors, (1907), 1156 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2023-02-15 19:25:06,651 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 23 [2023-02-15 19:25:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,651 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2023-02-15 19:25:06,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2023-02-15 19:25:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:25:06,652 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,653 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] [2023-02-15 19:25:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 19:25:06,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1957570863, now seen corresponding path program 1 times [2023-02-15 19:25:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289891899] [2023-02-15 19:25:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289891899] [2023-02-15 19:25:06,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289891899] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700663026] [2023-02-15 19:25:06,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,672 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,690 INFO L93 Difference]: Finished difference Result 1737 states and 2853 transitions. [2023-02-15 19:25:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-15 19:25:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,696 INFO L225 Difference]: With dead ends: 1737 [2023-02-15 19:25:06,697 INFO L226 Difference]: Without dead ends: 1175 [2023-02-15 19:25:06,697 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 [2023-02-15 19:25:06,698 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-02-15 19:25:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2023-02-15 19:25:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.6271331058020477) internal successors, (1907), 1172 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1907 transitions. [2023-02-15 19:25:06,722 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1907 transitions. Word has length 24 [2023-02-15 19:25:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,723 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1907 transitions. [2023-02-15 19:25:06,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1907 transitions. [2023-02-15 19:25:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:25:06,724 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,724 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] [2023-02-15 19:25:06,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 19:25:06,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1316328079, now seen corresponding path program 1 times [2023-02-15 19:25:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451418767] [2023-02-15 19:25:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451418767] [2023-02-15 19:25:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451418767] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520122841] [2023-02-15 19:25:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,759 INFO L87 Difference]: Start difference. First operand 1173 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,781 INFO L93 Difference]: Finished difference Result 2121 states and 3509 transitions. [2023-02-15 19:25:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-15 19:25:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,787 INFO L225 Difference]: With dead ends: 2121 [2023-02-15 19:25:06,787 INFO L226 Difference]: Without dead ends: 2119 [2023-02-15 19:25:06,788 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 [2023-02-15 19:25:06,789 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 43 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 141 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 [2023-02-15 19:25:06,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 141 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2023-02-15 19:25:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1669. [2023-02-15 19:25:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 1.5845323741007193) internal successors, (2643), 1668 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2643 transitions. [2023-02-15 19:25:06,832 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2643 transitions. Word has length 24 [2023-02-15 19:25:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,832 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2643 transitions. [2023-02-15 19:25:06,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2643 transitions. [2023-02-15 19:25:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:25:06,835 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,835 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] [2023-02-15 19:25:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-15 19:25:06,835 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 36464401, now seen corresponding path program 1 times [2023-02-15 19:25:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734181520] [2023-02-15 19:25:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734181520] [2023-02-15 19:25:06,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734181520] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:06,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:06,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016966362] [2023-02-15 19:25:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:06,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:06,856 INFO L87 Difference]: Start difference. First operand 1669 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:06,891 INFO L93 Difference]: Finished difference Result 3913 states and 6229 transitions. [2023-02-15 19:25:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-15 19:25:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:06,898 INFO L225 Difference]: With dead ends: 3913 [2023-02-15 19:25:06,899 INFO L226 Difference]: Without dead ends: 2279 [2023-02-15 19:25:06,905 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 [2023-02-15 19:25:06,906 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 53 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:06,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2023-02-15 19:25:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2277. [2023-02-15 19:25:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2276 states have (on average 1.5760105448154658) internal successors, (3587), 2276 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3587 transitions. [2023-02-15 19:25:06,993 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3587 transitions. Word has length 24 [2023-02-15 19:25:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:06,993 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3587 transitions. [2023-02-15 19:25:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3587 transitions. [2023-02-15 19:25:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 19:25:06,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:06,994 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] [2023-02-15 19:25:06,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 19:25:06,994 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2143288106, now seen corresponding path program 1 times [2023-02-15 19:25:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651184926] [2023-02-15 19:25:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:06,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651184926] [2023-02-15 19:25:07,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651184926] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:07,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:07,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246869876] [2023-02-15 19:25:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:07,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:07,014 INFO L87 Difference]: Start difference. First operand 2277 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:07,040 INFO L93 Difference]: Finished difference Result 3417 states and 5365 transitions. [2023-02-15 19:25:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-15 19:25:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:07,046 INFO L225 Difference]: With dead ends: 3417 [2023-02-15 19:25:07,046 INFO L226 Difference]: Without dead ends: 2311 [2023-02-15 19:25:07,047 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 [2023-02-15 19:25:07,048 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 55 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:07,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:07,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2023-02-15 19:25:07,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2023-02-15 19:25:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 1.5541594454072791) internal successors, (3587), 2308 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3587 transitions. [2023-02-15 19:25:07,103 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3587 transitions. Word has length 25 [2023-02-15 19:25:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:07,103 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3587 transitions. [2023-02-15 19:25:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3587 transitions. [2023-02-15 19:25:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 19:25:07,105 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:07,106 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] [2023-02-15 19:25:07,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 19:25:07,106 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1130610836, now seen corresponding path program 1 times [2023-02-15 19:25:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:07,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48370295] [2023-02-15 19:25:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:07,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48370295] [2023-02-15 19:25:07,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48370295] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:07,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:07,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194331555] [2023-02-15 19:25:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:07,136 INFO L87 Difference]: Start difference. First operand 2309 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:07,173 INFO L93 Difference]: Finished difference Result 4105 states and 6501 transitions. [2023-02-15 19:25:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:07,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-15 19:25:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:07,183 INFO L225 Difference]: With dead ends: 4105 [2023-02-15 19:25:07,183 INFO L226 Difference]: Without dead ends: 4103 [2023-02-15 19:25:07,184 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 [2023-02-15 19:25:07,184 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 139 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 [2023-02-15 19:25:07,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2023-02-15 19:25:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3333. [2023-02-15 19:25:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 1.508703481392557) internal successors, (5027), 3332 states have internal predecessors, (5027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5027 transitions. [2023-02-15 19:25:07,263 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5027 transitions. Word has length 25 [2023-02-15 19:25:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:07,263 INFO L495 AbstractCegarLoop]: Abstraction has 3333 states and 5027 transitions. [2023-02-15 19:25:07,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5027 transitions. [2023-02-15 19:25:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 19:25:07,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:07,266 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] [2023-02-15 19:25:07,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-15 19:25:07,267 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -149252842, now seen corresponding path program 1 times [2023-02-15 19:25:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:07,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829121930] [2023-02-15 19:25:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:07,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829121930] [2023-02-15 19:25:07,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829121930] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:07,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:07,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:07,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829645243] [2023-02-15 19:25:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:07,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:07,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:07,292 INFO L87 Difference]: Start difference. First operand 3333 states and 5027 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:07,355 INFO L93 Difference]: Finished difference Result 7753 states and 11749 transitions. [2023-02-15 19:25:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:07,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-15 19:25:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:07,366 INFO L225 Difference]: With dead ends: 7753 [2023-02-15 19:25:07,366 INFO L226 Difference]: Without dead ends: 4487 [2023-02-15 19:25:07,370 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 [2023-02-15 19:25:07,371 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 52 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:07,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 177 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2023-02-15 19:25:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2023-02-15 19:25:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 1.4993309545049063) internal successors, (6723), 4484 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6723 transitions. [2023-02-15 19:25:07,465 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6723 transitions. Word has length 25 [2023-02-15 19:25:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:07,465 INFO L495 AbstractCegarLoop]: Abstraction has 4485 states and 6723 transitions. [2023-02-15 19:25:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6723 transitions. [2023-02-15 19:25:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:25:07,470 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:07,470 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] [2023-02-15 19:25:07,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-15 19:25:07,470 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:07,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash 689412294, now seen corresponding path program 1 times [2023-02-15 19:25:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:07,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600045606] [2023-02-15 19:25:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600045606] [2023-02-15 19:25:07,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600045606] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:07,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:07,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:07,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456385618] [2023-02-15 19:25:07,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:07,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:07,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:07,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:07,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:07,486 INFO L87 Difference]: Start difference. First operand 4485 states and 6723 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2023-02-15 19:25:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:07,540 INFO L93 Difference]: Finished difference Result 6729 states and 10053 transitions. [2023-02-15 19:25:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 [2023-02-15 19:25:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:07,551 INFO L225 Difference]: With dead ends: 6729 [2023-02-15 19:25:07,552 INFO L226 Difference]: Without dead ends: 4551 [2023-02-15 19:25:07,554 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 [2023-02-15 19:25:07,555 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 54 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:07,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 168 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:07,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2023-02-15 19:25:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4549. [2023-02-15 19:25:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4548 states have (on average 1.4782321899736148) internal successors, (6723), 4548 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6723 transitions. [2023-02-15 19:25:07,650 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6723 transitions. Word has length 26 [2023-02-15 19:25:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:07,650 INFO L495 AbstractCegarLoop]: Abstraction has 4549 states and 6723 transitions. [2023-02-15 19:25:07,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2023-02-15 19:25:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6723 transitions. [2023-02-15 19:25:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:25:07,655 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:07,655 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] [2023-02-15 19:25:07,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-15 19:25:07,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash -331656060, now seen corresponding path program 1 times [2023-02-15 19:25:07,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:07,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288437925] [2023-02-15 19:25:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:07,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:07,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:07,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288437925] [2023-02-15 19:25:07,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288437925] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:07,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:07,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:07,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146402043] [2023-02-15 19:25:07,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:07,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:07,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:07,671 INFO L87 Difference]: Start difference. First operand 4549 states and 6723 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2023-02-15 19:25:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:07,753 INFO L93 Difference]: Finished difference Result 7945 states and 11973 transitions. [2023-02-15 19:25:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:07,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 [2023-02-15 19:25:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:07,765 INFO L225 Difference]: With dead ends: 7945 [2023-02-15 19:25:07,765 INFO L226 Difference]: Without dead ends: 7943 [2023-02-15 19:25:07,767 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 [2023-02-15 19:25:07,767 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 37 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 137 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 [2023-02-15 19:25:07,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2023-02-15 19:25:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 6661. [2023-02-15 19:25:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 1.4322822822822823) internal successors, (9539), 6660 states have internal predecessors, (9539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9539 transitions. [2023-02-15 19:25:07,905 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9539 transitions. Word has length 26 [2023-02-15 19:25:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:07,905 INFO L495 AbstractCegarLoop]: Abstraction has 6661 states and 9539 transitions. [2023-02-15 19:25:07,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2023-02-15 19:25:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9539 transitions. [2023-02-15 19:25:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:25:07,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:07,912 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] [2023-02-15 19:25:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-15 19:25:07,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1611519738, now seen corresponding path program 1 times [2023-02-15 19:25:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:07,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741234630] [2023-02-15 19:25:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:07,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:07,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741234630] [2023-02-15 19:25:07,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741234630] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:07,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:07,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:07,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740794245] [2023-02-15 19:25:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:07,930 INFO L87 Difference]: Start difference. First operand 6661 states and 9539 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2023-02-15 19:25:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:08,042 INFO L93 Difference]: Finished difference Result 15369 states and 22085 transitions. [2023-02-15 19:25:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 [2023-02-15 19:25:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:08,055 INFO L225 Difference]: With dead ends: 15369 [2023-02-15 19:25:08,055 INFO L226 Difference]: Without dead ends: 8839 [2023-02-15 19:25:08,061 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 [2023-02-15 19:25:08,062 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 51 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:08,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2023-02-15 19:25:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8837. [2023-02-15 19:25:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 1.4199864191942055) internal successors, (12547), 8836 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12547 transitions. [2023-02-15 19:25:08,255 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12547 transitions. Word has length 26 [2023-02-15 19:25:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:08,255 INFO L495 AbstractCegarLoop]: Abstraction has 8837 states and 12547 transitions. [2023-02-15 19:25:08,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2023-02-15 19:25:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12547 transitions. [2023-02-15 19:25:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:25:08,262 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:08,262 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] [2023-02-15 19:25:08,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-15 19:25:08,262 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1691188181, now seen corresponding path program 1 times [2023-02-15 19:25:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:08,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460627200] [2023-02-15 19:25:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:08,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460627200] [2023-02-15 19:25:08,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460627200] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:08,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:08,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672882558] [2023-02-15 19:25:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:08,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:08,280 INFO L87 Difference]: Start difference. First operand 8837 states and 12547 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:08,396 INFO L93 Difference]: Finished difference Result 13257 states and 18757 transitions. [2023-02-15 19:25:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-02-15 19:25:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:08,408 INFO L225 Difference]: With dead ends: 13257 [2023-02-15 19:25:08,408 INFO L226 Difference]: Without dead ends: 8967 [2023-02-15 19:25:08,412 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 [2023-02-15 19:25:08,413 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 53 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:08,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2023-02-15 19:25:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8965. [2023-02-15 19:25:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8965 states, 8964 states have (on average 1.3997099509147701) internal successors, (12547), 8964 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8965 states to 8965 states and 12547 transitions. [2023-02-15 19:25:08,610 INFO L78 Accepts]: Start accepts. Automaton has 8965 states and 12547 transitions. Word has length 27 [2023-02-15 19:25:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:08,610 INFO L495 AbstractCegarLoop]: Abstraction has 8965 states and 12547 transitions. [2023-02-15 19:25:08,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8965 states and 12547 transitions. [2023-02-15 19:25:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:25:08,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:08,617 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] [2023-02-15 19:25:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-15 19:25:08,617 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1582710761, now seen corresponding path program 1 times [2023-02-15 19:25:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:08,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498841488] [2023-02-15 19:25:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:08,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:08,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498841488] [2023-02-15 19:25:08,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498841488] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:08,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:08,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854101316] [2023-02-15 19:25:08,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:08,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:08,638 INFO L87 Difference]: Start difference. First operand 8965 states and 12547 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:08,800 INFO L93 Difference]: Finished difference Result 15369 states and 21893 transitions. [2023-02-15 19:25:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-02-15 19:25:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:08,820 INFO L225 Difference]: With dead ends: 15369 [2023-02-15 19:25:08,820 INFO L226 Difference]: Without dead ends: 15367 [2023-02-15 19:25:08,825 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 [2023-02-15 19:25:08,826 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 135 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 [2023-02-15 19:25:08,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 135 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2023-02-15 19:25:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13317. [2023-02-15 19:25:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13317 states, 13316 states have (on average 1.3555872634424753) internal successors, (18051), 13316 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13317 states to 13317 states and 18051 transitions. [2023-02-15 19:25:09,082 INFO L78 Accepts]: Start accepts. Automaton has 13317 states and 18051 transitions. Word has length 27 [2023-02-15 19:25:09,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:09,082 INFO L495 AbstractCegarLoop]: Abstraction has 13317 states and 18051 transitions. [2023-02-15 19:25:09,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 13317 states and 18051 transitions. [2023-02-15 19:25:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:25:09,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:09,094 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] [2023-02-15 19:25:09,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-15 19:25:09,094 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:09,095 INFO L85 PathProgramCache]: Analyzing trace with hash 302847083, now seen corresponding path program 1 times [2023-02-15 19:25:09,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:09,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480157117] [2023-02-15 19:25:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:09,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:09,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480157117] [2023-02-15 19:25:09,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480157117] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:09,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:09,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:09,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491643822] [2023-02-15 19:25:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:09,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:09,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:09,114 INFO L87 Difference]: Start difference. First operand 13317 states and 18051 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:09,278 INFO L93 Difference]: Finished difference Result 30473 states and 41349 transitions. [2023-02-15 19:25:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:09,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-02-15 19:25:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:09,304 INFO L225 Difference]: With dead ends: 30473 [2023-02-15 19:25:09,304 INFO L226 Difference]: Without dead ends: 17415 [2023-02-15 19:25:09,319 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 [2023-02-15 19:25:09,320 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 50 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:09,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 179 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2023-02-15 19:25:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17413. [2023-02-15 19:25:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17413 states, 17412 states have (on average 1.3381001608086378) internal successors, (23299), 17412 states have internal predecessors, (23299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23299 transitions. [2023-02-15 19:25:09,707 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23299 transitions. Word has length 27 [2023-02-15 19:25:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:09,707 INFO L495 AbstractCegarLoop]: Abstraction has 17413 states and 23299 transitions. [2023-02-15 19:25:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23299 transitions. [2023-02-15 19:25:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:25:09,720 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:09,721 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] [2023-02-15 19:25:09,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-15 19:25:09,722 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:09,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1819608763, now seen corresponding path program 1 times [2023-02-15 19:25:09,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:09,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134875047] [2023-02-15 19:25:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:09,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:09,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:09,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134875047] [2023-02-15 19:25:09,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134875047] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:09,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:09,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284114643] [2023-02-15 19:25:09,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:09,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:09,758 INFO L87 Difference]: Start difference. First operand 17413 states and 23299 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:09,962 INFO L93 Difference]: Finished difference Result 26121 states and 34821 transitions. [2023-02-15 19:25:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:09,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-02-15 19:25:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:09,987 INFO L225 Difference]: With dead ends: 26121 [2023-02-15 19:25:09,988 INFO L226 Difference]: Without dead ends: 17671 [2023-02-15 19:25:09,997 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 [2023-02-15 19:25:09,998 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2023-02-15 19:25:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17669. [2023-02-15 19:25:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17669 states, 17668 states have (on average 1.318711795336201) internal successors, (23299), 17668 states have internal predecessors, (23299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17669 states to 17669 states and 23299 transitions. [2023-02-15 19:25:10,413 INFO L78 Accepts]: Start accepts. Automaton has 17669 states and 23299 transitions. Word has length 28 [2023-02-15 19:25:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:10,413 INFO L495 AbstractCegarLoop]: Abstraction has 17669 states and 23299 transitions. [2023-02-15 19:25:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 17669 states and 23299 transitions. [2023-02-15 19:25:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:25:10,427 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:10,428 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] [2023-02-15 19:25:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-15 19:25:10,428 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 798540409, now seen corresponding path program 1 times [2023-02-15 19:25:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:10,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555768457] [2023-02-15 19:25:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:10,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:10,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555768457] [2023-02-15 19:25:10,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555768457] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:10,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:10,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214454374] [2023-02-15 19:25:10,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:10,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:10,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:10,442 INFO L87 Difference]: Start difference. First operand 17669 states and 23299 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:10,669 INFO L93 Difference]: Finished difference Result 29705 states and 39685 transitions. [2023-02-15 19:25:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:10,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-02-15 19:25:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:10,705 INFO L225 Difference]: With dead ends: 29705 [2023-02-15 19:25:10,705 INFO L226 Difference]: Without dead ends: 29703 [2023-02-15 19:25:10,713 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 [2023-02-15 19:25:10,713 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 31 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 133 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 [2023-02-15 19:25:10,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 133 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29703 states. [2023-02-15 19:25:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29703 to 26629. [2023-02-15 19:25:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26629 states, 26628 states have (on average 1.2787667117320114) internal successors, (34051), 26628 states have internal predecessors, (34051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 34051 transitions. [2023-02-15 19:25:11,159 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 34051 transitions. Word has length 28 [2023-02-15 19:25:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:11,159 INFO L495 AbstractCegarLoop]: Abstraction has 26629 states and 34051 transitions. [2023-02-15 19:25:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 34051 transitions. [2023-02-15 19:25:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:25:11,178 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:11,178 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] [2023-02-15 19:25:11,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-15 19:25:11,179 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:11,179 INFO L85 PathProgramCache]: Analyzing trace with hash -481323269, now seen corresponding path program 1 times [2023-02-15 19:25:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950250440] [2023-02-15 19:25:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:11,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950250440] [2023-02-15 19:25:11,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950250440] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:11,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:11,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531038640] [2023-02-15 19:25:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:11,193 INFO L87 Difference]: Start difference. First operand 26629 states and 34051 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:11,559 INFO L93 Difference]: Finished difference Result 60425 states and 77061 transitions. [2023-02-15 19:25:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:11,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-02-15 19:25:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:11,601 INFO L225 Difference]: With dead ends: 60425 [2023-02-15 19:25:11,601 INFO L226 Difference]: Without dead ends: 34311 [2023-02-15 19:25:11,620 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 [2023-02-15 19:25:11,620 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:11,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2023-02-15 19:25:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 34309. [2023-02-15 19:25:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34309 states, 34308 states have (on average 1.2536726128016789) internal successors, (43011), 34308 states have internal predecessors, (43011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 43011 transitions. [2023-02-15 19:25:12,286 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 43011 transitions. Word has length 28 [2023-02-15 19:25:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:12,286 INFO L495 AbstractCegarLoop]: Abstraction has 34309 states and 43011 transitions. [2023-02-15 19:25:12,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 43011 transitions. [2023-02-15 19:25:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:25:12,304 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:12,305 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] [2023-02-15 19:25:12,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-15 19:25:12,305 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1014835328, now seen corresponding path program 1 times [2023-02-15 19:25:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:12,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289356130] [2023-02-15 19:25:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289356130] [2023-02-15 19:25:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289356130] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:12,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:12,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591020591] [2023-02-15 19:25:12,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:12,321 INFO L87 Difference]: Start difference. First operand 34309 states and 43011 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:12,727 INFO L93 Difference]: Finished difference Result 51465 states and 64261 transitions. [2023-02-15 19:25:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-02-15 19:25:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:12,764 INFO L225 Difference]: With dead ends: 51465 [2023-02-15 19:25:12,764 INFO L226 Difference]: Without dead ends: 34823 [2023-02-15 19:25:12,776 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 [2023-02-15 19:25:12,776 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 51 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:12,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:12,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34823 states. [2023-02-15 19:25:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34823 to 34821. [2023-02-15 19:25:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34821 states, 34820 states have (on average 1.23523836875359) internal successors, (43011), 34820 states have internal predecessors, (43011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 43011 transitions. [2023-02-15 19:25:13,366 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 43011 transitions. Word has length 29 [2023-02-15 19:25:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:13,366 INFO L495 AbstractCegarLoop]: Abstraction has 34821 states and 43011 transitions. [2023-02-15 19:25:13,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 43011 transitions. [2023-02-15 19:25:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:25:13,386 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:13,386 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] [2023-02-15 19:25:13,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-15 19:25:13,387 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2035903682, now seen corresponding path program 1 times [2023-02-15 19:25:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:13,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318571109] [2023-02-15 19:25:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318571109] [2023-02-15 19:25:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318571109] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:13,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:13,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843610887] [2023-02-15 19:25:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:13,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:13,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:13,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:13,400 INFO L87 Difference]: Start difference. First operand 34821 states and 43011 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:14,004 INFO L93 Difference]: Finished difference Result 101385 states and 122885 transitions. [2023-02-15 19:25:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:14,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-02-15 19:25:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:14,072 INFO L225 Difference]: With dead ends: 101385 [2023-02-15 19:25:14,072 INFO L226 Difference]: Without dead ends: 67591 [2023-02-15 19:25:14,094 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 [2023-02-15 19:25:14,095 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 49 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:14,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2023-02-15 19:25:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67589. [2023-02-15 19:25:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 67588 states have (on average 1.1817926259099247) internal successors, (79875), 67588 states have internal predecessors, (79875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 79875 transitions. [2023-02-15 19:25:15,205 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 79875 transitions. Word has length 29 [2023-02-15 19:25:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:15,205 INFO L495 AbstractCegarLoop]: Abstraction has 67589 states and 79875 transitions. [2023-02-15 19:25:15,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 79875 transitions. [2023-02-15 19:25:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:25:15,238 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:15,238 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] [2023-02-15 19:25:15,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-15 19:25:15,238 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash -756040004, now seen corresponding path program 1 times [2023-02-15 19:25:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:15,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095971615] [2023-02-15 19:25:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:15,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:15,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095971615] [2023-02-15 19:25:15,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095971615] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:15,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:15,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320959498] [2023-02-15 19:25:15,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:15,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:15,258 INFO L87 Difference]: Start difference. First operand 67589 states and 79875 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:16,430 INFO L93 Difference]: Finished difference Result 71689 states and 86021 transitions. [2023-02-15 19:25:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-02-15 19:25:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:16,503 INFO L225 Difference]: With dead ends: 71689 [2023-02-15 19:25:16,503 INFO L226 Difference]: Without dead ends: 71687 [2023-02-15 19:25:16,514 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 [2023-02-15 19:25:16,515 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:16,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71687 states. [2023-02-15 19:25:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71687 to 67589. [2023-02-15 19:25:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 67588 states have (on average 1.166642007456945) internal successors, (78851), 67588 states have internal predecessors, (78851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 78851 transitions. [2023-02-15 19:25:17,946 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 78851 transitions. Word has length 29 [2023-02-15 19:25:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:17,946 INFO L495 AbstractCegarLoop]: Abstraction has 67589 states and 78851 transitions. [2023-02-15 19:25:17,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 78851 transitions. [2023-02-15 19:25:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:25:17,978 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:17,978 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] [2023-02-15 19:25:17,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-15 19:25:17,978 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1311711408, now seen corresponding path program 1 times [2023-02-15 19:25:17,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592199216] [2023-02-15 19:25:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592199216] [2023-02-15 19:25:17,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592199216] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:17,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:17,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:17,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830768621] [2023-02-15 19:25:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:17,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:17,992 INFO L87 Difference]: Start difference. First operand 67589 states and 78851 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2023-02-15 19:25:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:19,020 INFO L93 Difference]: Finished difference Result 109575 states and 126980 transitions. [2023-02-15 19:25:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:19,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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 [2023-02-15 19:25:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:19,226 INFO L225 Difference]: With dead ends: 109575 [2023-02-15 19:25:19,226 INFO L226 Difference]: Without dead ends: 109573 [2023-02-15 19:25:19,236 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 [2023-02-15 19:25:19,237 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 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 [2023-02-15 19:25:19,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2023-02-15 19:25:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 105477. [2023-02-15 19:25:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105477 states, 105476 states have (on average 1.1456160643179492) internal successors, (120835), 105476 states have internal predecessors, (120835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105477 states to 105477 states and 120835 transitions. [2023-02-15 19:25:20,830 INFO L78 Accepts]: Start accepts. Automaton has 105477 states and 120835 transitions. Word has length 30 [2023-02-15 19:25:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,830 INFO L495 AbstractCegarLoop]: Abstraction has 105477 states and 120835 transitions. [2023-02-15 19:25:20,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2023-02-15 19:25:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 105477 states and 120835 transitions. [2023-02-15 19:25:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:25:20,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,899 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] [2023-02-15 19:25:20,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-02-15 19:25:20,900 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 31847730, now seen corresponding path program 1 times [2023-02-15 19:25:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603930573] [2023-02-15 19:25:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603930573] [2023-02-15 19:25:20,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603930573] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464473683] [2023-02-15 19:25:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,919 INFO L87 Difference]: Start difference. First operand 105477 states and 120835 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2023-02-15 19:25:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:22,590 INFO L93 Difference]: Finished difference Result 236549 states and 268291 transitions. [2023-02-15 19:25:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:22,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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 [2023-02-15 19:25:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:22,591 INFO L225 Difference]: With dead ends: 236549 [2023-02-15 19:25:22,591 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 19:25:22,666 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 [2023-02-15 19:25:22,666 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:22,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 19:25:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 19:25:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 19:25:22,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2023-02-15 19:25:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 19:25:22,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2023-02-15 19:25:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 19:25:22,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 19:25:22,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 19:25:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-02-15 19:25:22,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L118-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L168-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L102-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L169(line 169) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L153-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,683 INFO L899 garLoopResultBuilder]: For program point L154(line 154) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L138-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L139(line 139) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L106-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L902 garLoopResultBuilder]: At program point L189(lines 7 193) the Hoare annotation is: true [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L90-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L173-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 19:25:22,684 INFO L899 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L158-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L159(line 159) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L143-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L110-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 193) the Hoare annotation is: true [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2023-02-15 19:25:22,685 INFO L899 garLoopResultBuilder]: For program point L78-2(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L128-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L178-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L129(line 129) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L163-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L114-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2023-02-15 19:25:22,686 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L133-1(lines 47 188) no Hoare annotation was computed. [2023-02-15 19:25:22,687 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 193) the Hoare annotation is: false [2023-02-15 19:25:22,687 INFO L902 garLoopResultBuilder]: At program point L183-1(lines 47 188) the Hoare annotation is: true [2023-02-15 19:25:22,687 INFO L899 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2023-02-15 19:25:22,690 INFO L445 BasicCegarLoop]: Path program 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] [2023-02-15 19:25:22,691 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 19:25:22,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 07:25:22 BoogieIcfgContainer [2023-02-15 19:25:22,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 19:25:22,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 19:25:22,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 19:25:22,700 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 19:25:22,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:25:05" (3/4) ... [2023-02-15 19:25:22,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 19:25:22,711 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-15 19:25:22,712 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 19:25:22,712 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 19:25:22,712 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 19:25:22,748 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 19:25:22,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 19:25:22,748 INFO L158 Benchmark]: Toolchain (without parser) took 17955.19ms. Allocated memory was 109.1MB in the beginning and 9.3GB in the end (delta: 9.2GB). Free memory was 70.7MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-02-15 19:25:22,749 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 81.6MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 19:25:22,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.72ms. Allocated memory is still 109.1MB. Free memory was 70.4MB in the beginning and 58.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 19:25:22,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.04ms. Allocated memory is still 109.1MB. Free memory was 58.8MB in the beginning and 57.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 19:25:22,754 INFO L158 Benchmark]: Boogie Preprocessor took 37.20ms. Allocated memory is still 109.1MB. Free memory was 57.0MB in the beginning and 55.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 19:25:22,754 INFO L158 Benchmark]: RCFGBuilder took 330.20ms. Allocated memory is still 109.1MB. Free memory was 55.4MB in the beginning and 40.5MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 19:25:22,754 INFO L158 Benchmark]: TraceAbstraction took 17294.46ms. Allocated memory was 109.1MB in the beginning and 9.3GB in the end (delta: 9.2GB). Free memory was 81.1MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-02-15 19:25:22,754 INFO L158 Benchmark]: Witness Printer took 48.02ms. Allocated memory is still 9.3GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 19:25:22,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 81.6MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.72ms. Allocated memory is still 109.1MB. Free memory was 70.4MB in the beginning and 58.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.04ms. Allocated memory is still 109.1MB. Free memory was 58.8MB in the beginning and 57.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.20ms. Allocated memory is still 109.1MB. Free memory was 57.0MB in the beginning and 55.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.20ms. Allocated memory is still 109.1MB. Free memory was 55.4MB in the beginning and 40.5MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17294.46ms. Allocated memory was 109.1MB in the beginning and 9.3GB in the end (delta: 9.2GB). Free memory was 81.1MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 48.02ms. Allocated memory is still 9.3GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.2s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1629 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1629 mSDsluCounter, 5405 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2174 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 3231 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105477occurred in iteration=32, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.0s AutomataMinimizationTime, 33 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4105 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 778 ConstructedInterpolants, 0 QuantifiedInterpolants, 1702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-15 19:25:22,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE