./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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_7.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 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:46:21,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:46:21,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:46:21,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:46:21,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:46:21,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:46:21,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:46:21,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:46:21,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:46:21,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:46:21,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:46:21,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:46:21,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:46:21,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:46:21,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:46:21,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:46:21,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:46:21,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:46:21,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:46:21,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:46:21,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:46:21,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:46:21,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:46:21,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:46:21,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:46:21,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:46:21,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:46:21,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:46:21,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:46:21,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:46:21,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:46:21,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:46:21,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:46:21,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:46:21,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:46:21,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:46:21,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:46:21,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:46:21,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:46:21,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:46:21,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:46:21,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:46:21,498 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:46:21,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:46:21,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:46:21,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:46:21,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:46:21,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:46:21,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:46:21,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:46:21,500 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:46:21,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:46:21,500 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:46:21,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:46:21,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:46:21,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:46:21,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:46:21,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:46:21,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:46:21,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:46:21,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:46:21,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:46:21,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:46:21,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:46:21,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:46:21,503 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:46:21,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:46:21,503 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:46:21,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2023-02-16 00:46:21,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:46:21,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:46:21,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:46:21,743 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:46:21,744 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:46:21,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_7.c [2023-02-16 00:46:22,738 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:46:22,881 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:46:22,882 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c [2023-02-16 00:46:22,886 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3938f1f8/ec4786d75b184f2aac06e2f75166404c/FLAG9c5bc34ab [2023-02-16 00:46:22,916 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3938f1f8/ec4786d75b184f2aac06e2f75166404c [2023-02-16 00:46:22,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:46:22,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:46:22,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:46:22,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:46:22,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:46:22,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:46:22" (1/1) ... [2023-02-16 00:46:22,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108ef471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:22, skipping insertion in model container [2023-02-16 00:46:22,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:46:22" (1/1) ... [2023-02-16 00:46:22,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:46:22,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:46:23,053 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_7.c[2881,2894] [2023-02-16 00:46:23,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:46:23,066 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:46:23,078 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_7.c[2881,2894] [2023-02-16 00:46:23,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:46:23,087 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:46:23,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23 WrapperNode [2023-02-16 00:46:23,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:46:23,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:46:23,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:46:23,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:46:23,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,114 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2023-02-16 00:46:23,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:46:23,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:46:23,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:46:23,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:46:23,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:46:23,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:46:23,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:46:23,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:46:23,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (1/1) ... [2023-02-16 00:46:23,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:46:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:46:23,169 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) [2023-02-16 00:46:23,177 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 [2023-02-16 00:46:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:46:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:46:23,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:46:23,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:46:23,254 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:46:23,257 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:46:23,436 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:46:23,440 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:46:23,440 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 00:46:23,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:46:23 BoogieIcfgContainer [2023-02-16 00:46:23,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:46:23,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:46:23,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:46:23,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:46:23,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:46:22" (1/3) ... [2023-02-16 00:46:23,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cae636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:46:23, skipping insertion in model container [2023-02-16 00:46:23,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:23" (2/3) ... [2023-02-16 00:46:23,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cae636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:46:23, skipping insertion in model container [2023-02-16 00:46:23,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:46:23" (3/3) ... [2023-02-16 00:46:23,447 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2023-02-16 00:46:23,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:46:23,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:46:23,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:46:23,578 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;@5a4c441b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:46:23,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:46:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 00:46:23,594 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:23,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:23,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2023-02-16 00:46:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:23,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481611671] [2023-02-16 00:46:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:23,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:23,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481611671] [2023-02-16 00:46:23,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481611671] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:23,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:23,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982056508] [2023-02-16 00:46:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:23,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:23,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:23,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:23,783 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:23,808 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2023-02-16 00:46:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-02-16 00:46:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:23,815 INFO L225 Difference]: With dead ends: 65 [2023-02-16 00:46:23,815 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 00:46:23,817 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 [2023-02-16 00:46:23,819 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 103 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 [2023-02-16 00:46:23,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 103 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 00:46:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2023-02-16 00:46:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 34 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2023-02-16 00:46:23,841 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2023-02-16 00:46:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:23,843 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2023-02-16 00:46:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2023-02-16 00:46:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 00:46:23,844 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:23,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:23,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:46:23,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:23,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2023-02-16 00:46:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805143304] [2023-02-16 00:46:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:23,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:23,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805143304] [2023-02-16 00:46:23,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805143304] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:23,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:23,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:23,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128200216] [2023-02-16 00:46:23,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:23,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:23,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:23,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:23,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:23,923 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:23,949 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2023-02-16 00:46:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:23,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-02-16 00:46:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:23,951 INFO L225 Difference]: With dead ends: 84 [2023-02-16 00:46:23,951 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 00:46:23,951 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 [2023-02-16 00:46:23,955 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 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 [2023-02-16 00:46:23,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 00:46:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-16 00:46:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 48 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2023-02-16 00:46:23,963 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2023-02-16 00:46:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:23,963 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2023-02-16 00:46:23,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2023-02-16 00:46:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 00:46:23,964 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:23,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:23,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:46:23,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:23,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2023-02-16 00:46:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:23,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039232262] [2023-02-16 00:46:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039232262] [2023-02-16 00:46:24,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039232262] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884464055] [2023-02-16 00:46:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,035 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,051 INFO L93 Difference]: Finished difference Result 78 states and 132 transitions. [2023-02-16 00:46:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-02-16 00:46:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,054 INFO L225 Difference]: With dead ends: 78 [2023-02-16 00:46:24,054 INFO L226 Difference]: Without dead ends: 54 [2023-02-16 00:46:24,054 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 [2023-02-16 00:46:24,055 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 112 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 [2023-02-16 00:46:24,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-16 00:46:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-02-16 00:46:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2023-02-16 00:46:24,062 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2023-02-16 00:46:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,062 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2023-02-16 00:46:24,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2023-02-16 00:46:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 00:46:24,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:46:24,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2023-02-16 00:46:24,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511683689] [2023-02-16 00:46:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511683689] [2023-02-16 00:46:24,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511683689] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741007563] [2023-02-16 00:46:24,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,123 INFO L87 Difference]: Start difference. First operand 52 states and 88 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,145 INFO L93 Difference]: Finished difference Result 97 states and 165 transitions. [2023-02-16 00:46:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-02-16 00:46:24,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,146 INFO L225 Difference]: With dead ends: 97 [2023-02-16 00:46:24,146 INFO L226 Difference]: Without dead ends: 95 [2023-02-16 00:46:24,146 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 [2023-02-16 00:46:24,147 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 89 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 [2023-02-16 00:46:24,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-16 00:46:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2023-02-16 00:46:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2023-02-16 00:46:24,153 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2023-02-16 00:46:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,153 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2023-02-16 00:46:24,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2023-02-16 00:46:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 00:46:24,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 00:46:24,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2023-02-16 00:46:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509892129] [2023-02-16 00:46:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509892129] [2023-02-16 00:46:24,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509892129] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371672653] [2023-02-16 00:46:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,208 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,230 INFO L93 Difference]: Finished difference Result 161 states and 275 transitions. [2023-02-16 00:46:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-02-16 00:46:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,231 INFO L225 Difference]: With dead ends: 161 [2023-02-16 00:46:24,231 INFO L226 Difference]: Without dead ends: 97 [2023-02-16 00:46:24,231 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 [2023-02-16 00:46:24,232 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 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 [2023-02-16 00:46:24,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-16 00:46:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-02-16 00:46:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 94 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2023-02-16 00:46:24,238 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2023-02-16 00:46:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,239 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2023-02-16 00:46:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2023-02-16 00:46:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 00:46:24,239 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 00:46:24,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2023-02-16 00:46:24,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095000637] [2023-02-16 00:46:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095000637] [2023-02-16 00:46:24,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095000637] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553417567] [2023-02-16 00:46:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,289 INFO L87 Difference]: Start difference. First operand 95 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,303 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2023-02-16 00:46:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-16 00:46:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,304 INFO L225 Difference]: With dead ends: 144 [2023-02-16 00:46:24,304 INFO L226 Difference]: Without dead ends: 99 [2023-02-16 00:46:24,305 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 [2023-02-16 00:46:24,308 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 34 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 108 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 [2023-02-16 00:46:24,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 108 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-16 00:46:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2023-02-16 00:46:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.65625) internal successors, (159), 96 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2023-02-16 00:46:24,318 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2023-02-16 00:46:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,318 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2023-02-16 00:46:24,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2023-02-16 00:46:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 00:46:24,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 00:46:24,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2023-02-16 00:46:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145635367] [2023-02-16 00:46:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145635367] [2023-02-16 00:46:24,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145635367] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87982164] [2023-02-16 00:46:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,350 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,366 INFO L93 Difference]: Finished difference Result 273 states and 449 transitions. [2023-02-16 00:46:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-16 00:46:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,369 INFO L225 Difference]: With dead ends: 273 [2023-02-16 00:46:24,369 INFO L226 Difference]: Without dead ends: 183 [2023-02-16 00:46:24,371 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 [2023-02-16 00:46:24,373 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 91 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 [2023-02-16 00:46:24,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-02-16 00:46:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-02-16 00:46:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6166666666666667) internal successors, (291), 180 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2023-02-16 00:46:24,381 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2023-02-16 00:46:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,382 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2023-02-16 00:46:24,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2023-02-16 00:46:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 00:46:24,382 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 00:46:24,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2023-02-16 00:46:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881646502] [2023-02-16 00:46:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881646502] [2023-02-16 00:46:24,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881646502] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540552250] [2023-02-16 00:46:24,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,422 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,439 INFO L93 Difference]: Finished difference Result 225 states and 365 transitions. [2023-02-16 00:46:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-16 00:46:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,440 INFO L225 Difference]: With dead ends: 225 [2023-02-16 00:46:24,440 INFO L226 Difference]: Without dead ends: 223 [2023-02-16 00:46:24,441 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 [2023-02-16 00:46:24,441 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 116 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 [2023-02-16 00:46:24,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-02-16 00:46:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2023-02-16 00:46:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 180 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2023-02-16 00:46:24,457 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2023-02-16 00:46:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,457 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2023-02-16 00:46:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2023-02-16 00:46:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 00:46:24,457 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 00:46:24,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2023-02-16 00:46:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139840116] [2023-02-16 00:46:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139840116] [2023-02-16 00:46:24,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139840116] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551385069] [2023-02-16 00:46:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,498 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,515 INFO L93 Difference]: Finished difference Result 325 states and 521 transitions. [2023-02-16 00:46:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-02-16 00:46:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,517 INFO L225 Difference]: With dead ends: 325 [2023-02-16 00:46:24,517 INFO L226 Difference]: Without dead ends: 323 [2023-02-16 00:46:24,517 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 [2023-02-16 00:46:24,519 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 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 [2023-02-16 00:46:24,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-02-16 00:46:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2023-02-16 00:46:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.55859375) internal successors, (399), 256 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2023-02-16 00:46:24,530 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2023-02-16 00:46:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,530 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2023-02-16 00:46:24,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2023-02-16 00:46:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 00:46:24,531 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 00:46:24,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2023-02-16 00:46:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259493625] [2023-02-16 00:46:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259493625] [2023-02-16 00:46:24,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259493625] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985596744] [2023-02-16 00:46:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,552 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,566 INFO L93 Difference]: Finished difference Result 597 states and 929 transitions. [2023-02-16 00:46:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-02-16 00:46:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,568 INFO L225 Difference]: With dead ends: 597 [2023-02-16 00:46:24,568 INFO L226 Difference]: Without dead ends: 347 [2023-02-16 00:46:24,569 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 [2023-02-16 00:46:24,569 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 104 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 [2023-02-16 00:46:24,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 104 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-02-16 00:46:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2023-02-16 00:46:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.5203488372093024) internal successors, (523), 344 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2023-02-16 00:46:24,578 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2023-02-16 00:46:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,579 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2023-02-16 00:46:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2023-02-16 00:46:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:46:24,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 00:46:24,584 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2023-02-16 00:46:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752287483] [2023-02-16 00:46:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752287483] [2023-02-16 00:46:24,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752287483] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808947048] [2023-02-16 00:46:24,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,604 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,616 INFO L93 Difference]: Finished difference Result 525 states and 793 transitions. [2023-02-16 00:46:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-16 00:46:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,618 INFO L225 Difference]: With dead ends: 525 [2023-02-16 00:46:24,618 INFO L226 Difference]: Without dead ends: 359 [2023-02-16 00:46:24,619 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 [2023-02-16 00:46:24,621 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 100 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 [2023-02-16 00:46:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 100 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-02-16 00:46:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2023-02-16 00:46:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4915730337078652) internal successors, (531), 356 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) [2023-02-16 00:46:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2023-02-16 00:46:24,629 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2023-02-16 00:46:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,629 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2023-02-16 00:46:24,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2023-02-16 00:46:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:46:24,632 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 00:46:24,632 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2023-02-16 00:46:24,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843227685] [2023-02-16 00:46:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843227685] [2023-02-16 00:46:24,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843227685] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245630254] [2023-02-16 00:46:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,645 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,655 INFO L93 Difference]: Finished difference Result 617 states and 925 transitions. [2023-02-16 00:46:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-16 00:46:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,657 INFO L225 Difference]: With dead ends: 617 [2023-02-16 00:46:24,657 INFO L226 Difference]: Without dead ends: 615 [2023-02-16 00:46:24,657 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 [2023-02-16 00:46:24,657 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 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 [2023-02-16 00:46:24,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-02-16 00:46:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2023-02-16 00:46:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.447674418604651) internal successors, (747), 516 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2023-02-16 00:46:24,667 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2023-02-16 00:46:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,667 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2023-02-16 00:46:24,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2023-02-16 00:46:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:46:24,668 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 00:46:24,668 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2023-02-16 00:46:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861729988] [2023-02-16 00:46:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861729988] [2023-02-16 00:46:24,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861729988] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179587360] [2023-02-16 00:46:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,680 INFO L87 Difference]: Start difference. First operand 517 states and 747 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,693 INFO L93 Difference]: Finished difference Result 1177 states and 1693 transitions. [2023-02-16 00:46:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-16 00:46:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,695 INFO L225 Difference]: With dead ends: 1177 [2023-02-16 00:46:24,695 INFO L226 Difference]: Without dead ends: 679 [2023-02-16 00:46:24,696 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 [2023-02-16 00:46:24,696 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 105 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 [2023-02-16 00:46:24,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-02-16 00:46:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2023-02-16 00:46:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.400887573964497) internal successors, (947), 676 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2023-02-16 00:46:24,709 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2023-02-16 00:46:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,709 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2023-02-16 00:46:24,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2023-02-16 00:46:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 00:46:24,710 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-16 00:46:24,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2023-02-16 00:46:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243944563] [2023-02-16 00:46:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243944563] [2023-02-16 00:46:24,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243944563] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355372917] [2023-02-16 00:46:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,722 INFO L87 Difference]: Start difference. First operand 677 states and 947 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) [2023-02-16 00:46:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,735 INFO L93 Difference]: Finished difference Result 1017 states and 1413 transitions. [2023-02-16 00:46:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,736 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 [2023-02-16 00:46:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,737 INFO L225 Difference]: With dead ends: 1017 [2023-02-16 00:46:24,737 INFO L226 Difference]: Without dead ends: 695 [2023-02-16 00:46:24,738 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 [2023-02-16 00:46:24,738 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 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 [2023-02-16 00:46:24,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-02-16 00:46:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2023-02-16 00:46:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.3684971098265897) internal successors, (947), 692 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2023-02-16 00:46:24,752 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2023-02-16 00:46:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,752 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2023-02-16 00:46:24,752 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) [2023-02-16 00:46:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2023-02-16 00:46:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 00:46:24,753 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-16 00:46:24,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2023-02-16 00:46:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133366421] [2023-02-16 00:46:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133366421] [2023-02-16 00:46:24,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133366421] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152800388] [2023-02-16 00:46:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,765 INFO L87 Difference]: Start difference. First operand 693 states and 947 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) [2023-02-16 00:46:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,783 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2023-02-16 00:46:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,784 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 [2023-02-16 00:46:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,786 INFO L225 Difference]: With dead ends: 1161 [2023-02-16 00:46:24,786 INFO L226 Difference]: Without dead ends: 1159 [2023-02-16 00:46:24,787 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 [2023-02-16 00:46:24,787 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 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 [2023-02-16 00:46:24,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-02-16 00:46:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2023-02-16 00:46:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.325875486381323) internal successors, (1363), 1028 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2023-02-16 00:46:24,812 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2023-02-16 00:46:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,812 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2023-02-16 00:46:24,812 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) [2023-02-16 00:46:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2023-02-16 00:46:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 00:46:24,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:24,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-16 00:46:24,813 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2023-02-16 00:46:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879633259] [2023-02-16 00:46:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879633259] [2023-02-16 00:46:24,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879633259] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050660788] [2023-02-16 00:46:24,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,825 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 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) [2023-02-16 00:46:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,848 INFO L93 Difference]: Finished difference Result 2313 states and 3029 transitions. [2023-02-16 00:46:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,848 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 [2023-02-16 00:46:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,851 INFO L225 Difference]: With dead ends: 2313 [2023-02-16 00:46:24,851 INFO L226 Difference]: Without dead ends: 1319 [2023-02-16 00:46:24,852 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 [2023-02-16 00:46:24,852 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 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 [2023-02-16 00:46:24,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-02-16 00:46:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2023-02-16 00:46:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.2667173252279635) internal successors, (1667), 1316 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2023-02-16 00:46:24,880 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2023-02-16 00:46:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,880 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2023-02-16 00:46:24,880 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) [2023-02-16 00:46:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2023-02-16 00:46:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:46:24,881 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,881 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] [2023-02-16 00:46:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-16 00:46:24,881 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2023-02-16 00:46:24,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066259800] [2023-02-16 00:46:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066259800] [2023-02-16 00:46:24,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066259800] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418219642] [2023-02-16 00:46:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,905 INFO L87 Difference]: Start difference. First operand 1317 states and 1667 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) [2023-02-16 00:46:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:24,928 INFO L93 Difference]: Finished difference Result 1977 states and 2485 transitions. [2023-02-16 00:46:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:24,928 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 [2023-02-16 00:46:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:24,932 INFO L225 Difference]: With dead ends: 1977 [2023-02-16 00:46:24,932 INFO L226 Difference]: Without dead ends: 1351 [2023-02-16 00:46:24,933 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 [2023-02-16 00:46:24,934 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 92 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 [2023-02-16 00:46:24,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-02-16 00:46:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2023-02-16 00:46:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.236646884272997) internal successors, (1667), 1348 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2023-02-16 00:46:24,972 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2023-02-16 00:46:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:24,972 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2023-02-16 00:46:24,972 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) [2023-02-16 00:46:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2023-02-16 00:46:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:46:24,973 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:24,973 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] [2023-02-16 00:46:24,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-16 00:46:24,974 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2023-02-16 00:46:24,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:24,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845327739] [2023-02-16 00:46:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:24,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845327739] [2023-02-16 00:46:24,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845327739] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:24,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:24,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917011515] [2023-02-16 00:46:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:24,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:24,990 INFO L87 Difference]: Start difference. First operand 1349 states and 1667 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) [2023-02-16 00:46:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:25,024 INFO L93 Difference]: Finished difference Result 2183 states and 2660 transitions. [2023-02-16 00:46:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:25,024 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 [2023-02-16 00:46:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:25,029 INFO L225 Difference]: With dead ends: 2183 [2023-02-16 00:46:25,029 INFO L226 Difference]: Without dead ends: 2181 [2023-02-16 00:46:25,029 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 [2023-02-16 00:46:25,030 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 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 [2023-02-16 00:46:25,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2023-02-16 00:46:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2023-02-16 00:46:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 1.2022417153996101) internal successors, (2467), 2052 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:46:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2023-02-16 00:46:25,080 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2023-02-16 00:46:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:25,081 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2023-02-16 00:46:25,081 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) [2023-02-16 00:46:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2023-02-16 00:46:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:46:25,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:25,082 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] [2023-02-16 00:46:25,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-16 00:46:25,083 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2023-02-16 00:46:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:25,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176605140] [2023-02-16 00:46:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:25,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:25,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176605140] [2023-02-16 00:46:25,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176605140] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:25,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:25,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:46:25,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883290571] [2023-02-16 00:46:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:25,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:46:25,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:25,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:46:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:46:25,094 INFO L87 Difference]: Start difference. First operand 2053 states and 2467 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) [2023-02-16 00:46:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:25,149 INFO L93 Difference]: Finished difference Result 4549 states and 5347 transitions. [2023-02-16 00:46:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:46:25,150 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 [2023-02-16 00:46:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:25,150 INFO L225 Difference]: With dead ends: 4549 [2023-02-16 00:46:25,150 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 00:46:25,152 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 [2023-02-16 00:46:25,153 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 105 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 [2023-02-16 00:46:25,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:46:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 00:46:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 00:46:25,153 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) [2023-02-16 00:46:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 00:46:25,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-02-16 00:46:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:25,153 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 00:46:25,153 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) [2023-02-16 00:46:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 00:46:25,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 00:46:25,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 00:46:25,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-16 00:46:25,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 123) the Hoare annotation is: true [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L69-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L94(line 94) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L902 garLoopResultBuilder]: At program point L119(lines 7 123) the Hoare annotation is: true [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 55) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L53-2(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,164 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L57-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 123) the Hoare annotation is: false [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2023-02-16 00:46:25,165 INFO L899 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2023-02-16 00:46:25,167 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] [2023-02-16 00:46:25,168 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 00:46:25,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 12:46:25 BoogieIcfgContainer [2023-02-16 00:46:25,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 00:46:25,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 00:46:25,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 00:46:25,174 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 00:46:25,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:46:23" (3/4) ... [2023-02-16 00:46:25,176 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 00:46:25,182 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-16 00:46:25,183 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 00:46:25,183 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 00:46:25,183 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 00:46:25,204 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 00:46:25,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 00:46:25,205 INFO L158 Benchmark]: Toolchain (without parser) took 2284.90ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 150.3MB in the beginning and 125.3MB in the end (delta: 24.9MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,205 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 130.0MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:46:25,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.17ms. Allocated memory is still 182.5MB. Free memory was 150.1MB in the beginning and 143.2MB in the end (delta: 6.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.22ms. Allocated memory is still 182.5MB. Free memory was 143.2MB in the beginning and 141.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,205 INFO L158 Benchmark]: Boogie Preprocessor took 13.65ms. Allocated memory is still 182.5MB. Free memory was 141.4MB in the beginning and 140.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,206 INFO L158 Benchmark]: RCFGBuilder took 311.98ms. Allocated memory is still 182.5MB. Free memory was 140.3MB in the beginning and 127.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,206 INFO L158 Benchmark]: TraceAbstraction took 1730.91ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 126.9MB in the beginning and 128.5MB in the end (delta: -1.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,206 INFO L158 Benchmark]: Witness Printer took 30.67ms. Allocated memory is still 220.2MB. Free memory was 128.5MB in the beginning and 125.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 00:46:25,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 130.0MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.17ms. Allocated memory is still 182.5MB. Free memory was 150.1MB in the beginning and 143.2MB in the end (delta: 6.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.22ms. Allocated memory is still 182.5MB. Free memory was 143.2MB in the beginning and 141.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.65ms. Allocated memory is still 182.5MB. Free memory was 141.4MB in the beginning and 140.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.98ms. Allocated memory is still 182.5MB. Free memory was 140.3MB in the beginning and 127.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1730.91ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 126.9MB in the beginning and 128.5MB in the end (delta: -1.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 30.67ms. Allocated memory is still 220.2MB. Free memory was 128.5MB in the beginning and 125.3MB 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: 121]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 543 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 1857 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1128 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=18, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 137 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, 0.4s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-16 00:46:25,237 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