./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_12.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:45:15,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:45:15,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:45:15,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:45:15,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:45:15,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:45:15,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:45:15,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:45:15,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:45:15,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:45:15,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:45:15,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:45:15,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:45:15,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:45:15,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:45:15,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:45:15,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:45:15,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:45:15,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:45:15,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:45:15,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:45:15,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:45:15,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:45:15,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:45:15,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:45:15,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:45:15,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:45:15,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:45:15,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:45:15,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:45:15,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:45:15,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:45:15,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:45:15,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:45:15,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:45:15,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:45:15,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:45:15,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:45:15,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:45:15,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:45:15,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:45:15,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:45:15,539 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:45:15,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:45:15,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:45:15,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:45:15,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:45:15,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:45:15,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:45:15,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:45:15,541 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:45:15,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:45:15,542 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:45:15,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:45:15,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:45:15,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:45:15,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:45:15,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:45:15,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:45:15,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:45:15,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:45:15,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:45:15,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:45:15,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:45:15,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:45:15,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:45:15,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:45:15,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:45:15,545 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:45:15,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:45:15,546 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:45:15,546 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2023-02-16 00:45:15,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:45:15,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:45:15,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:45:15,764 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:45:15,778 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:45:15,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2023-02-16 00:45:16,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:45:16,892 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:45:16,893 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2023-02-16 00:45:16,899 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7fcbf71/9432191fca2f4bcea76f7df88eeb8b67/FLAGcee73bd0e [2023-02-16 00:45:16,910 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7fcbf71/9432191fca2f4bcea76f7df88eeb8b67 [2023-02-16 00:45:16,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:45:16,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:45:16,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:45:16,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:45:16,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:45:16,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:45:16" (1/1) ... [2023-02-16 00:45:16,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1e0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:16, skipping insertion in model container [2023-02-16 00:45:16,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:45:16" (1/1) ... [2023-02-16 00:45:16,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:45:16,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:45:17,053 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_12.c[4591,4604] [2023-02-16 00:45:17,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:45:17,070 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:45:17,108 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2023-02-16 00:45:17,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:45:17,125 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:45:17,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17 WrapperNode [2023-02-16 00:45:17,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:45:17,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:45:17,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:45:17,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:45:17,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,149 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 160 [2023-02-16 00:45:17,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:45:17,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:45:17,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:45:17,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:45:17,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:45:17,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:45:17,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:45:17,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:45:17,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (1/1) ... [2023-02-16 00:45:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:45:17,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:45:17,215 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 00:45:17,219 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 00:45:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:45:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:45:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:45:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:45:17,317 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:45:17,318 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:45:17,490 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:45:17,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:45:17,508 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 00:45:17,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:45:17 BoogieIcfgContainer [2023-02-16 00:45:17,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:45:17,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:45:17,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:45:17,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:45:17,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:45:16" (1/3) ... [2023-02-16 00:45:17,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303edabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:45:17, skipping insertion in model container [2023-02-16 00:45:17,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:45:17" (2/3) ... [2023-02-16 00:45:17,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303edabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:45:17, skipping insertion in model container [2023-02-16 00:45:17,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:45:17" (3/3) ... [2023-02-16 00:45:17,515 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2023-02-16 00:45:17,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:45:17,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:45:17,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:45:17,574 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;@27102c2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:45:17,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:45:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 00:45:17,581 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:17,581 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 00:45:17,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1341605783, now seen corresponding path program 1 times [2023-02-16 00:45:17,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:17,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795781528] [2023-02-16 00:45:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:17,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:17,726 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 00:45:17,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:17,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795781528] [2023-02-16 00:45:17,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795781528] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:17,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:17,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:17,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378535890] [2023-02-16 00:45:17,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:17,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:17,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:17,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:17,750 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:17,777 INFO L93 Difference]: Finished difference Result 95 states and 169 transitions. [2023-02-16 00:45:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:17,783 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 00:45:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:17,789 INFO L225 Difference]: With dead ends: 95 [2023-02-16 00:45:17,789 INFO L226 Difference]: Without dead ends: 81 [2023-02-16 00:45:17,791 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 00:45:17,793 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:17,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-16 00:45:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2023-02-16 00:45:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 102 transitions. [2023-02-16 00:45:17,816 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 102 transitions. Word has length 19 [2023-02-16 00:45:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:17,816 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 102 transitions. [2023-02-16 00:45:17,816 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 00:45:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 102 transitions. [2023-02-16 00:45:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 00:45:17,817 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:17,817 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 00:45:17,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:45:17,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash 61742105, now seen corresponding path program 1 times [2023-02-16 00:45:17,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:17,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47281246] [2023-02-16 00:45:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:45:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47281246] [2023-02-16 00:45:17,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47281246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:17,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:17,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909869897] [2023-02-16 00:45:17,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:17,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:17,892 INFO L87 Difference]: Start difference. First operand 55 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:17,907 INFO L93 Difference]: Finished difference Result 134 states and 249 transitions. [2023-02-16 00:45:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:17,908 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 00:45:17,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:17,909 INFO L225 Difference]: With dead ends: 134 [2023-02-16 00:45:17,909 INFO L226 Difference]: Without dead ends: 81 [2023-02-16 00:45:17,910 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 00:45:17,910 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 58 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:17,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-16 00:45:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-02-16 00:45:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.8717948717948718) internal successors, (146), 78 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 146 transitions. [2023-02-16 00:45:17,917 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 146 transitions. Word has length 19 [2023-02-16 00:45:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:17,917 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 146 transitions. [2023-02-16 00:45:17,917 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 00:45:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 146 transitions. [2023-02-16 00:45:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:45:17,918 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:17,918 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 00:45:17,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:45:17,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:17,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1359680987, now seen corresponding path program 1 times [2023-02-16 00:45:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:17,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481480975] [2023-02-16 00:45:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:17,959 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 00:45:17,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:17,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481480975] [2023-02-16 00:45:17,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481480975] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:17,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:17,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429285745] [2023-02-16 00:45:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:17,962 INFO L87 Difference]: Start difference. First operand 79 states and 146 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:17,975 INFO L93 Difference]: Finished difference Result 123 states and 222 transitions. [2023-02-16 00:45:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:17,976 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 00:45:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:17,977 INFO L225 Difference]: With dead ends: 123 [2023-02-16 00:45:17,977 INFO L226 Difference]: Without dead ends: 84 [2023-02-16 00:45:17,977 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 00:45:17,978 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 60 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:17,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-16 00:45:17,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2023-02-16 00:45:17,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.8271604938271604) internal successors, (148), 81 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 148 transitions. [2023-02-16 00:45:17,984 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 148 transitions. Word has length 20 [2023-02-16 00:45:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:17,984 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 148 transitions. [2023-02-16 00:45:17,986 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 00:45:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 148 transitions. [2023-02-16 00:45:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:45:17,988 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:17,988 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 00:45:17,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:45:17,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1914217955, now seen corresponding path program 1 times [2023-02-16 00:45:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:17,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458242127] [2023-02-16 00:45:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,024 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 00:45:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458242127] [2023-02-16 00:45:18,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458242127] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619850286] [2023-02-16 00:45:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,026 INFO L87 Difference]: Start difference. First operand 82 states and 148 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,039 INFO L93 Difference]: Finished difference Result 157 states and 285 transitions. [2023-02-16 00:45:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,040 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 00:45:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,041 INFO L225 Difference]: With dead ends: 157 [2023-02-16 00:45:18,041 INFO L226 Difference]: Without dead ends: 155 [2023-02-16 00:45:18,041 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 00:45:18,042 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-16 00:45:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2023-02-16 00:45:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.8240740740740742) internal successors, (197), 108 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 197 transitions. [2023-02-16 00:45:18,050 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 197 transitions. Word has length 20 [2023-02-16 00:45:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,050 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 197 transitions. [2023-02-16 00:45:18,050 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 00:45:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 197 transitions. [2023-02-16 00:45:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:45:18,051 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,051 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 00:45:18,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 00:45:18,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash 634354277, now seen corresponding path program 1 times [2023-02-16 00:45:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433583573] [2023-02-16 00:45:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,081 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 00:45:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433583573] [2023-02-16 00:45:18,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433583573] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524627031] [2023-02-16 00:45:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,084 INFO L87 Difference]: Start difference. First operand 109 states and 197 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,097 INFO L93 Difference]: Finished difference Result 261 states and 475 transitions. [2023-02-16 00:45:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,098 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 00:45:18,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,099 INFO L225 Difference]: With dead ends: 261 [2023-02-16 00:45:18,099 INFO L226 Difference]: Without dead ends: 157 [2023-02-16 00:45:18,100 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 00:45:18,100 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-16 00:45:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2023-02-16 00:45:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.8116883116883118) internal successors, (279), 154 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 279 transitions. [2023-02-16 00:45:18,108 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 279 transitions. Word has length 20 [2023-02-16 00:45:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,108 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 279 transitions. [2023-02-16 00:45:18,108 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 00:45:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 279 transitions. [2023-02-16 00:45:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:45:18,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 00:45:18,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash -788572498, now seen corresponding path program 1 times [2023-02-16 00:45:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751874548] [2023-02-16 00:45:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,183 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 00:45:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751874548] [2023-02-16 00:45:18,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751874548] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672608545] [2023-02-16 00:45:18,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,186 INFO L87 Difference]: Start difference. First operand 155 states and 279 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,202 INFO L93 Difference]: Finished difference Result 234 states and 418 transitions. [2023-02-16 00:45:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 00:45:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,209 INFO L225 Difference]: With dead ends: 234 [2023-02-16 00:45:18,209 INFO L226 Difference]: Without dead ends: 159 [2023-02-16 00:45:18,210 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 00:45:18,211 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 59 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-16 00:45:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2023-02-16 00:45:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.7884615384615385) internal successors, (279), 156 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2023-02-16 00:45:18,224 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 21 [2023-02-16 00:45:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,224 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2023-02-16 00:45:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2023-02-16 00:45:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:45:18,225 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 00:45:18,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1809640852, now seen corresponding path program 1 times [2023-02-16 00:45:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128252913] [2023-02-16 00:45:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,246 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 00:45:18,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128252913] [2023-02-16 00:45:18,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128252913] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283265295] [2023-02-16 00:45:18,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,249 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,260 INFO L93 Difference]: Finished difference Result 453 states and 809 transitions. [2023-02-16 00:45:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 00:45:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,261 INFO L225 Difference]: With dead ends: 453 [2023-02-16 00:45:18,261 INFO L226 Difference]: Without dead ends: 303 [2023-02-16 00:45:18,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,262 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-02-16 00:45:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2023-02-16 00:45:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.77) internal successors, (531), 300 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 531 transitions. [2023-02-16 00:45:18,271 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 531 transitions. Word has length 21 [2023-02-16 00:45:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,272 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 531 transitions. [2023-02-16 00:45:18,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 531 transitions. [2023-02-16 00:45:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:45:18,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 00:45:18,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,274 INFO L85 PathProgramCache]: Analyzing trace with hash -529777174, now seen corresponding path program 1 times [2023-02-16 00:45:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108116884] [2023-02-16 00:45:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,293 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 00:45:18,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108116884] [2023-02-16 00:45:18,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108116884] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623505388] [2023-02-16 00:45:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,295 INFO L87 Difference]: Start difference. First operand 301 states and 531 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,303 INFO L93 Difference]: Finished difference Result 385 states and 685 transitions. [2023-02-16 00:45:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 00:45:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,305 INFO L225 Difference]: With dead ends: 385 [2023-02-16 00:45:18,305 INFO L226 Difference]: Without dead ends: 383 [2023-02-16 00:45:18,312 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 00:45:18,313 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 52 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-02-16 00:45:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2023-02-16 00:45:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.7566666666666666) internal successors, (527), 300 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 527 transitions. [2023-02-16 00:45:18,324 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 527 transitions. Word has length 21 [2023-02-16 00:45:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,324 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 527 transitions. [2023-02-16 00:45:18,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 527 transitions. [2023-02-16 00:45:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 00:45:18,326 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 00:45:18,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash -264078182, now seen corresponding path program 1 times [2023-02-16 00:45:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883834226] [2023-02-16 00:45:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,344 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 00:45:18,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883834226] [2023-02-16 00:45:18,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883834226] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092903765] [2023-02-16 00:45:18,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,346 INFO L87 Difference]: Start difference. First operand 301 states and 527 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,357 INFO L93 Difference]: Finished difference Result 565 states and 1001 transitions. [2023-02-16 00:45:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-16 00:45:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,359 INFO L225 Difference]: With dead ends: 565 [2023-02-16 00:45:18,359 INFO L226 Difference]: Without dead ends: 563 [2023-02-16 00:45:18,359 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 00:45:18,360 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-02-16 00:45:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 417. [2023-02-16 00:45:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.7283653846153846) internal successors, (719), 416 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 719 transitions. [2023-02-16 00:45:18,369 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 719 transitions. Word has length 22 [2023-02-16 00:45:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,369 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 719 transitions. [2023-02-16 00:45:18,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 719 transitions. [2023-02-16 00:45:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 00:45:18,370 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 00:45:18,371 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1543941860, now seen corresponding path program 1 times [2023-02-16 00:45:18,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377094739] [2023-02-16 00:45:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,388 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 00:45:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377094739] [2023-02-16 00:45:18,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377094739] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153981525] [2023-02-16 00:45:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,390 INFO L87 Difference]: Start difference. First operand 417 states and 719 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,402 INFO L93 Difference]: Finished difference Result 997 states and 1729 transitions. [2023-02-16 00:45:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-16 00:45:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,404 INFO L225 Difference]: With dead ends: 997 [2023-02-16 00:45:18,404 INFO L226 Difference]: Without dead ends: 587 [2023-02-16 00:45:18,405 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 00:45:18,405 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 55 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-02-16 00:45:18,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2023-02-16 00:45:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.7174657534246576) internal successors, (1003), 584 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1003 transitions. [2023-02-16 00:45:18,416 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1003 transitions. Word has length 22 [2023-02-16 00:45:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,417 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1003 transitions. [2023-02-16 00:45:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1003 transitions. [2023-02-16 00:45:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 00:45:18,422 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 00:45:18,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash 403724673, now seen corresponding path program 1 times [2023-02-16 00:45:18,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117728300] [2023-02-16 00:45:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,452 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 00:45:18,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117728300] [2023-02-16 00:45:18,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117728300] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555285921] [2023-02-16 00:45:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,457 INFO L87 Difference]: Start difference. First operand 585 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,475 INFO L93 Difference]: Finished difference Result 885 states and 1513 transitions. [2023-02-16 00:45:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-16 00:45:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,477 INFO L225 Difference]: With dead ends: 885 [2023-02-16 00:45:18,477 INFO L226 Difference]: Without dead ends: 599 [2023-02-16 00:45:18,479 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 00:45:18,481 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-02-16 00:45:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2023-02-16 00:45:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.6963087248322148) internal successors, (1011), 596 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1011 transitions. [2023-02-16 00:45:18,493 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1011 transitions. Word has length 23 [2023-02-16 00:45:18,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,494 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1011 transitions. [2023-02-16 00:45:18,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1011 transitions. [2023-02-16 00:45:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 00:45:18,495 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 00:45:18,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash -617343681, now seen corresponding path program 1 times [2023-02-16 00:45:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797426888] [2023-02-16 00:45:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,530 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 00:45:18,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797426888] [2023-02-16 00:45:18,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797426888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837549174] [2023-02-16 00:45:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,535 INFO L87 Difference]: Start difference. First operand 597 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,549 INFO L93 Difference]: Finished difference Result 1097 states and 1885 transitions. [2023-02-16 00:45:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-16 00:45:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,552 INFO L225 Difference]: With dead ends: 1097 [2023-02-16 00:45:18,552 INFO L226 Difference]: Without dead ends: 1095 [2023-02-16 00:45:18,552 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 00:45:18,554 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 143 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2023-02-16 00:45:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 837. [2023-02-16 00:45:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.6590909090909092) internal successors, (1387), 836 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1387 transitions. [2023-02-16 00:45:18,569 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1387 transitions. Word has length 23 [2023-02-16 00:45:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,569 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1387 transitions. [2023-02-16 00:45:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1387 transitions. [2023-02-16 00:45:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 00:45:18,570 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 00:45:18,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1897207359, now seen corresponding path program 1 times [2023-02-16 00:45:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132871769] [2023-02-16 00:45:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,591 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 00:45:18,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132871769] [2023-02-16 00:45:18,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132871769] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271817821] [2023-02-16 00:45:18,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,594 INFO L87 Difference]: Start difference. First operand 837 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,621 INFO L93 Difference]: Finished difference Result 1977 states and 3293 transitions. [2023-02-16 00:45:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-16 00:45:18,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,625 INFO L225 Difference]: With dead ends: 1977 [2023-02-16 00:45:18,625 INFO L226 Difference]: Without dead ends: 1159 [2023-02-16 00:45:18,626 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 00:45:18,628 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 54 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-02-16 00:45:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2023-02-16 00:45:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.6496539792387543) internal successors, (1907), 1156 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2023-02-16 00:45:18,649 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 23 [2023-02-16 00:45:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,649 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2023-02-16 00:45:18,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2023-02-16 00:45:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 00:45:18,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-16 00:45:18,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1957570863, now seen corresponding path program 1 times [2023-02-16 00:45:18,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718036793] [2023-02-16 00:45:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:45:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718036793] [2023-02-16 00:45:18,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718036793] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814125375] [2023-02-16 00:45:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,672 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,690 INFO L93 Difference]: Finished difference Result 1737 states and 2853 transitions. [2023-02-16 00:45:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-16 00:45:18,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,695 INFO L225 Difference]: With dead ends: 1737 [2023-02-16 00:45:18,695 INFO L226 Difference]: Without dead ends: 1175 [2023-02-16 00:45:18,696 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 00:45:18,696 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-02-16 00:45:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2023-02-16 00:45:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.6271331058020477) internal successors, (1907), 1172 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1907 transitions. [2023-02-16 00:45:18,715 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1907 transitions. Word has length 24 [2023-02-16 00:45:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,716 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1907 transitions. [2023-02-16 00:45:18,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1907 transitions. [2023-02-16 00:45:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 00:45:18,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-16 00:45:18,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1316328079, now seen corresponding path program 1 times [2023-02-16 00:45:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838979649] [2023-02-16 00:45:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,738 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 00:45:18,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838979649] [2023-02-16 00:45:18,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838979649] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412358579] [2023-02-16 00:45:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,740 INFO L87 Difference]: Start difference. First operand 1173 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,768 INFO L93 Difference]: Finished difference Result 2121 states and 3509 transitions. [2023-02-16 00:45:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-16 00:45:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,773 INFO L225 Difference]: With dead ends: 2121 [2023-02-16 00:45:18,773 INFO L226 Difference]: Without dead ends: 2119 [2023-02-16 00:45:18,774 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 00:45:18,774 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 43 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 141 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2023-02-16 00:45:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1669. [2023-02-16 00:45:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 1.5845323741007193) internal successors, (2643), 1668 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2643 transitions. [2023-02-16 00:45:18,808 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2643 transitions. Word has length 24 [2023-02-16 00:45:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,808 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2643 transitions. [2023-02-16 00:45:18,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2643 transitions. [2023-02-16 00:45:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 00:45:18,810 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-16 00:45:18,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 36464401, now seen corresponding path program 1 times [2023-02-16 00:45:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604150735] [2023-02-16 00:45:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,834 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 00:45:18,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604150735] [2023-02-16 00:45:18,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604150735] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132485378] [2023-02-16 00:45:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,837 INFO L87 Difference]: Start difference. First operand 1669 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,867 INFO L93 Difference]: Finished difference Result 3913 states and 6229 transitions. [2023-02-16 00:45:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-16 00:45:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,871 INFO L225 Difference]: With dead ends: 3913 [2023-02-16 00:45:18,871 INFO L226 Difference]: Without dead ends: 2279 [2023-02-16 00:45:18,872 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 00:45:18,873 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 53 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2023-02-16 00:45:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2277. [2023-02-16 00:45:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2276 states have (on average 1.5760105448154658) internal successors, (3587), 2276 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3587 transitions. [2023-02-16 00:45:18,921 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3587 transitions. Word has length 24 [2023-02-16 00:45:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:18,922 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3587 transitions. [2023-02-16 00:45:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3587 transitions. [2023-02-16 00:45:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 00:45:18,923 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:18,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:18,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-16 00:45:18,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2143288106, now seen corresponding path program 1 times [2023-02-16 00:45:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:18,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343892881] [2023-02-16 00:45:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:18,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:18,941 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 00:45:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:18,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343892881] [2023-02-16 00:45:18,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343892881] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:18,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:18,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698421659] [2023-02-16 00:45:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:18,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:18,943 INFO L87 Difference]: Start difference. First operand 2277 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:18,970 INFO L93 Difference]: Finished difference Result 3417 states and 5365 transitions. [2023-02-16 00:45:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-16 00:45:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:18,975 INFO L225 Difference]: With dead ends: 3417 [2023-02-16 00:45:18,975 INFO L226 Difference]: Without dead ends: 2311 [2023-02-16 00:45:18,977 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 00:45:18,978 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 55 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:18,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2023-02-16 00:45:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2023-02-16 00:45:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 1.5541594454072791) internal successors, (3587), 2308 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3587 transitions. [2023-02-16 00:45:19,037 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3587 transitions. Word has length 25 [2023-02-16 00:45:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:19,037 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3587 transitions. [2023-02-16 00:45:19,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3587 transitions. [2023-02-16 00:45:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 00:45:19,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:19,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:19,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-16 00:45:19,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1130610836, now seen corresponding path program 1 times [2023-02-16 00:45:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:19,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184601033] [2023-02-16 00:45:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:19,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:19,066 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 00:45:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:19,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184601033] [2023-02-16 00:45:19,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184601033] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:19,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:19,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:19,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623344239] [2023-02-16 00:45:19,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:19,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:19,068 INFO L87 Difference]: Start difference. First operand 2309 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:19,110 INFO L93 Difference]: Finished difference Result 4105 states and 6501 transitions. [2023-02-16 00:45:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-16 00:45:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:19,119 INFO L225 Difference]: With dead ends: 4105 [2023-02-16 00:45:19,119 INFO L226 Difference]: Without dead ends: 4103 [2023-02-16 00:45:19,120 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 00:45:19,121 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:19,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2023-02-16 00:45:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3333. [2023-02-16 00:45:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 1.508703481392557) internal successors, (5027), 3332 states have internal predecessors, (5027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5027 transitions. [2023-02-16 00:45:19,177 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5027 transitions. Word has length 25 [2023-02-16 00:45:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:19,177 INFO L495 AbstractCegarLoop]: Abstraction has 3333 states and 5027 transitions. [2023-02-16 00:45:19,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5027 transitions. [2023-02-16 00:45:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 00:45:19,180 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:19,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:19,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-16 00:45:19,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash -149252842, now seen corresponding path program 1 times [2023-02-16 00:45:19,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:19,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994553082] [2023-02-16 00:45:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:19,199 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 00:45:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:19,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994553082] [2023-02-16 00:45:19,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994553082] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:19,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:19,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:19,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390697091] [2023-02-16 00:45:19,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:19,202 INFO L87 Difference]: Start difference. First operand 3333 states and 5027 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:19,265 INFO L93 Difference]: Finished difference Result 7753 states and 11749 transitions. [2023-02-16 00:45:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-16 00:45:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:19,274 INFO L225 Difference]: With dead ends: 7753 [2023-02-16 00:45:19,274 INFO L226 Difference]: Without dead ends: 4487 [2023-02-16 00:45:19,276 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 00:45:19,276 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 52 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:19,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 177 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2023-02-16 00:45:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2023-02-16 00:45:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 1.4993309545049063) internal successors, (6723), 4484 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6723 transitions. [2023-02-16 00:45:19,346 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6723 transitions. Word has length 25 [2023-02-16 00:45:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:19,346 INFO L495 AbstractCegarLoop]: Abstraction has 4485 states and 6723 transitions. [2023-02-16 00:45:19,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6723 transitions. [2023-02-16 00:45:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:45:19,350 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:19,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:19,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-16 00:45:19,350 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash 689412294, now seen corresponding path program 1 times [2023-02-16 00:45:19,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:19,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660403132] [2023-02-16 00:45:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:19,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:19,363 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 00:45:19,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:19,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660403132] [2023-02-16 00:45:19,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660403132] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:19,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:19,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671754376] [2023-02-16 00:45:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:19,365 INFO L87 Difference]: Start difference. First operand 4485 states and 6723 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:19,421 INFO L93 Difference]: Finished difference Result 6729 states and 10053 transitions. [2023-02-16 00:45:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-16 00:45:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:19,439 INFO L225 Difference]: With dead ends: 6729 [2023-02-16 00:45:19,439 INFO L226 Difference]: Without dead ends: 4551 [2023-02-16 00:45:19,441 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 00:45:19,441 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 54 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 168 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2023-02-16 00:45:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4549. [2023-02-16 00:45:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4548 states have (on average 1.4782321899736148) internal successors, (6723), 4548 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6723 transitions. [2023-02-16 00:45:19,520 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6723 transitions. Word has length 26 [2023-02-16 00:45:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:19,521 INFO L495 AbstractCegarLoop]: Abstraction has 4549 states and 6723 transitions. [2023-02-16 00:45:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6723 transitions. [2023-02-16 00:45:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:45:19,523 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:19,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-16 00:45:19,524 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -331656060, now seen corresponding path program 1 times [2023-02-16 00:45:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325393484] [2023-02-16 00:45:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:19,537 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 00:45:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:19,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325393484] [2023-02-16 00:45:19,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325393484] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:19,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:19,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368357816] [2023-02-16 00:45:19,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:19,540 INFO L87 Difference]: Start difference. First operand 4549 states and 6723 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:19,612 INFO L93 Difference]: Finished difference Result 7945 states and 11973 transitions. [2023-02-16 00:45:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:19,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-16 00:45:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:19,620 INFO L225 Difference]: With dead ends: 7945 [2023-02-16 00:45:19,620 INFO L226 Difference]: Without dead ends: 7943 [2023-02-16 00:45:19,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:19,621 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 37 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:19,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2023-02-16 00:45:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 6661. [2023-02-16 00:45:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 1.4322822822822823) internal successors, (9539), 6660 states have internal predecessors, (9539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9539 transitions. [2023-02-16 00:45:19,742 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9539 transitions. Word has length 26 [2023-02-16 00:45:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:19,742 INFO L495 AbstractCegarLoop]: Abstraction has 6661 states and 9539 transitions. [2023-02-16 00:45:19,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9539 transitions. [2023-02-16 00:45:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:45:19,748 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:19,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:19,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-16 00:45:19,748 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1611519738, now seen corresponding path program 1 times [2023-02-16 00:45:19,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:19,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881967530] [2023-02-16 00:45:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:19,763 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 00:45:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:19,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881967530] [2023-02-16 00:45:19,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881967530] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:19,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:19,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501599417] [2023-02-16 00:45:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:19,765 INFO L87 Difference]: Start difference. First operand 6661 states and 9539 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:19,850 INFO L93 Difference]: Finished difference Result 15369 states and 22085 transitions. [2023-02-16 00:45:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:19,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-16 00:45:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:19,860 INFO L225 Difference]: With dead ends: 15369 [2023-02-16 00:45:19,860 INFO L226 Difference]: Without dead ends: 8839 [2023-02-16 00:45:19,865 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 00:45:19,865 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 51 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:19,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2023-02-16 00:45:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8837. [2023-02-16 00:45:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 1.4199864191942055) internal successors, (12547), 8836 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12547 transitions. [2023-02-16 00:45:20,028 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12547 transitions. Word has length 26 [2023-02-16 00:45:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:20,028 INFO L495 AbstractCegarLoop]: Abstraction has 8837 states and 12547 transitions. [2023-02-16 00:45:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12547 transitions. [2023-02-16 00:45:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 00:45:20,033 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:20,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:20,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-16 00:45:20,034 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:20,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1691188181, now seen corresponding path program 1 times [2023-02-16 00:45:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:20,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622468062] [2023-02-16 00:45:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:20,046 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 00:45:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622468062] [2023-02-16 00:45:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622468062] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:20,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:20,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095475054] [2023-02-16 00:45:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:20,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:20,047 INFO L87 Difference]: Start difference. First operand 8837 states and 12547 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:20,140 INFO L93 Difference]: Finished difference Result 13257 states and 18757 transitions. [2023-02-16 00:45:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 00:45:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:20,150 INFO L225 Difference]: With dead ends: 13257 [2023-02-16 00:45:20,150 INFO L226 Difference]: Without dead ends: 8967 [2023-02-16 00:45:20,153 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 00:45:20,153 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 53 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:20,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2023-02-16 00:45:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8965. [2023-02-16 00:45:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8965 states, 8964 states have (on average 1.3997099509147701) internal successors, (12547), 8964 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8965 states to 8965 states and 12547 transitions. [2023-02-16 00:45:20,289 INFO L78 Accepts]: Start accepts. Automaton has 8965 states and 12547 transitions. Word has length 27 [2023-02-16 00:45:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:20,289 INFO L495 AbstractCegarLoop]: Abstraction has 8965 states and 12547 transitions. [2023-02-16 00:45:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8965 states and 12547 transitions. [2023-02-16 00:45:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 00:45:20,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:20,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:20,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-16 00:45:20,294 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:20,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1582710761, now seen corresponding path program 1 times [2023-02-16 00:45:20,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:20,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518189598] [2023-02-16 00:45:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:20,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:20,306 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 00:45:20,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:20,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518189598] [2023-02-16 00:45:20,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518189598] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:20,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:20,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:20,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462993669] [2023-02-16 00:45:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:20,308 INFO L87 Difference]: Start difference. First operand 8965 states and 12547 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:20,446 INFO L93 Difference]: Finished difference Result 15369 states and 21893 transitions. [2023-02-16 00:45:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:20,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 00:45:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:20,461 INFO L225 Difference]: With dead ends: 15369 [2023-02-16 00:45:20,462 INFO L226 Difference]: Without dead ends: 15367 [2023-02-16 00:45:20,463 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 00:45:20,464 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:20,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 135 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2023-02-16 00:45:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13317. [2023-02-16 00:45:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13317 states, 13316 states have (on average 1.3555872634424753) internal successors, (18051), 13316 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13317 states to 13317 states and 18051 transitions. [2023-02-16 00:45:20,678 INFO L78 Accepts]: Start accepts. Automaton has 13317 states and 18051 transitions. Word has length 27 [2023-02-16 00:45:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 13317 states and 18051 transitions. [2023-02-16 00:45:20,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 13317 states and 18051 transitions. [2023-02-16 00:45:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 00:45:20,688 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:20,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:20,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-16 00:45:20,688 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:20,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash 302847083, now seen corresponding path program 1 times [2023-02-16 00:45:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:20,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053477916] [2023-02-16 00:45:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:20,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:20,701 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 00:45:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:20,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053477916] [2023-02-16 00:45:20,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053477916] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664431320] [2023-02-16 00:45:20,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:20,703 INFO L87 Difference]: Start difference. First operand 13317 states and 18051 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:20,867 INFO L93 Difference]: Finished difference Result 30473 states and 41349 transitions. [2023-02-16 00:45:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 00:45:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:20,884 INFO L225 Difference]: With dead ends: 30473 [2023-02-16 00:45:20,884 INFO L226 Difference]: Without dead ends: 17415 [2023-02-16 00:45:20,893 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 00:45:20,893 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 50 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:20,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 179 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2023-02-16 00:45:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17413. [2023-02-16 00:45:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17413 states, 17412 states have (on average 1.3381001608086378) internal successors, (23299), 17412 states have internal predecessors, (23299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23299 transitions. [2023-02-16 00:45:21,167 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23299 transitions. Word has length 27 [2023-02-16 00:45:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:21,167 INFO L495 AbstractCegarLoop]: Abstraction has 17413 states and 23299 transitions. [2023-02-16 00:45:21,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23299 transitions. [2023-02-16 00:45:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 00:45:21,180 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:21,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-16 00:45:21,181 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1819608763, now seen corresponding path program 1 times [2023-02-16 00:45:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:21,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050769878] [2023-02-16 00:45:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:21,193 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 00:45:21,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:21,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050769878] [2023-02-16 00:45:21,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050769878] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:21,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:21,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515158748] [2023-02-16 00:45:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:21,204 INFO L87 Difference]: Start difference. First operand 17413 states and 23299 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:21,389 INFO L93 Difference]: Finished difference Result 26121 states and 34821 transitions. [2023-02-16 00:45:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 00:45:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:21,405 INFO L225 Difference]: With dead ends: 26121 [2023-02-16 00:45:21,405 INFO L226 Difference]: Without dead ends: 17671 [2023-02-16 00:45:21,414 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 00:45:21,415 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:21,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2023-02-16 00:45:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17669. [2023-02-16 00:45:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17669 states, 17668 states have (on average 1.318711795336201) internal successors, (23299), 17668 states have internal predecessors, (23299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17669 states to 17669 states and 23299 transitions. [2023-02-16 00:45:21,716 INFO L78 Accepts]: Start accepts. Automaton has 17669 states and 23299 transitions. Word has length 28 [2023-02-16 00:45:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:21,716 INFO L495 AbstractCegarLoop]: Abstraction has 17669 states and 23299 transitions. [2023-02-16 00:45:21,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 17669 states and 23299 transitions. [2023-02-16 00:45:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 00:45:21,729 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:21,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:21,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-16 00:45:21,729 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash 798540409, now seen corresponding path program 1 times [2023-02-16 00:45:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:21,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591017447] [2023-02-16 00:45:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:21,742 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 00:45:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:21,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591017447] [2023-02-16 00:45:21,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591017447] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:21,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:21,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788392595] [2023-02-16 00:45:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:21,744 INFO L87 Difference]: Start difference. First operand 17669 states and 23299 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:22,088 INFO L93 Difference]: Finished difference Result 29705 states and 39685 transitions. [2023-02-16 00:45:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 00:45:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:22,121 INFO L225 Difference]: With dead ends: 29705 [2023-02-16 00:45:22,121 INFO L226 Difference]: Without dead ends: 29703 [2023-02-16 00:45:22,126 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 00:45:22,126 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 31 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:22,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 133 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29703 states. [2023-02-16 00:45:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29703 to 26629. [2023-02-16 00:45:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26629 states, 26628 states have (on average 1.2787667117320114) internal successors, (34051), 26628 states have internal predecessors, (34051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 34051 transitions. [2023-02-16 00:45:22,540 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 34051 transitions. Word has length 28 [2023-02-16 00:45:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:22,541 INFO L495 AbstractCegarLoop]: Abstraction has 26629 states and 34051 transitions. [2023-02-16 00:45:22,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 34051 transitions. [2023-02-16 00:45:22,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 00:45:22,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:22,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:22,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-16 00:45:22,557 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash -481323269, now seen corresponding path program 1 times [2023-02-16 00:45:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:22,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113639841] [2023-02-16 00:45:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:22,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:22,569 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 00:45:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:22,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113639841] [2023-02-16 00:45:22,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113639841] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:22,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:22,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438569652] [2023-02-16 00:45:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:22,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:22,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:22,571 INFO L87 Difference]: Start difference. First operand 26629 states and 34051 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:22,924 INFO L93 Difference]: Finished difference Result 60425 states and 77061 transitions. [2023-02-16 00:45:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:22,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 00:45:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:22,956 INFO L225 Difference]: With dead ends: 60425 [2023-02-16 00:45:22,956 INFO L226 Difference]: Without dead ends: 34311 [2023-02-16 00:45:22,977 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 00:45:22,977 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:22,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2023-02-16 00:45:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 34309. [2023-02-16 00:45:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34309 states, 34308 states have (on average 1.2536726128016789) internal successors, (43011), 34308 states have internal predecessors, (43011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 43011 transitions. [2023-02-16 00:45:23,472 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 43011 transitions. Word has length 28 [2023-02-16 00:45:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:23,472 INFO L495 AbstractCegarLoop]: Abstraction has 34309 states and 43011 transitions. [2023-02-16 00:45:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 43011 transitions. [2023-02-16 00:45:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 00:45:23,487 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:23,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:23,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-16 00:45:23,487 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:23,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1014835328, now seen corresponding path program 1 times [2023-02-16 00:45:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:23,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362945116] [2023-02-16 00:45:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:23,500 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 00:45:23,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:23,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362945116] [2023-02-16 00:45:23,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362945116] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:23,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:23,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163660100] [2023-02-16 00:45:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:23,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:23,502 INFO L87 Difference]: Start difference. First operand 34309 states and 43011 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:23,828 INFO L93 Difference]: Finished difference Result 51465 states and 64261 transitions. [2023-02-16 00:45:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-16 00:45:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:23,860 INFO L225 Difference]: With dead ends: 51465 [2023-02-16 00:45:23,860 INFO L226 Difference]: Without dead ends: 34823 [2023-02-16 00:45:23,872 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 00:45:23,872 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 51 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:23,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34823 states. [2023-02-16 00:45:24,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34823 to 34821. [2023-02-16 00:45:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34821 states, 34820 states have (on average 1.23523836875359) internal successors, (43011), 34820 states have internal predecessors, (43011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 43011 transitions. [2023-02-16 00:45:24,333 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 43011 transitions. Word has length 29 [2023-02-16 00:45:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:24,333 INFO L495 AbstractCegarLoop]: Abstraction has 34821 states and 43011 transitions. [2023-02-16 00:45:24,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 43011 transitions. [2023-02-16 00:45:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 00:45:24,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:24,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:24,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-16 00:45:24,347 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2035903682, now seen corresponding path program 1 times [2023-02-16 00:45:24,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:24,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195366662] [2023-02-16 00:45:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:24,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:24,358 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 00:45:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:24,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195366662] [2023-02-16 00:45:24,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195366662] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:24,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:24,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:24,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623055360] [2023-02-16 00:45:24,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:24,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:24,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:24,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:24,360 INFO L87 Difference]: Start difference. First operand 34821 states and 43011 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:24,887 INFO L93 Difference]: Finished difference Result 101385 states and 122885 transitions. [2023-02-16 00:45:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:24,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-16 00:45:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:24,952 INFO L225 Difference]: With dead ends: 101385 [2023-02-16 00:45:24,953 INFO L226 Difference]: Without dead ends: 67591 [2023-02-16 00:45:24,979 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 00:45:24,980 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 49 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:24,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2023-02-16 00:45:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67589. [2023-02-16 00:45:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 67588 states have (on average 1.1817926259099247) internal successors, (79875), 67588 states have internal predecessors, (79875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 79875 transitions. [2023-02-16 00:45:26,179 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 79875 transitions. Word has length 29 [2023-02-16 00:45:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:26,179 INFO L495 AbstractCegarLoop]: Abstraction has 67589 states and 79875 transitions. [2023-02-16 00:45:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 79875 transitions. [2023-02-16 00:45:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 00:45:26,206 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:26,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:26,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-16 00:45:26,207 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash -756040004, now seen corresponding path program 1 times [2023-02-16 00:45:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157881487] [2023-02-16 00:45:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:26,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:26,219 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 00:45:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:26,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157881487] [2023-02-16 00:45:26,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157881487] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:26,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:26,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579237028] [2023-02-16 00:45:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:26,221 INFO L87 Difference]: Start difference. First operand 67589 states and 79875 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:27,090 INFO L93 Difference]: Finished difference Result 71689 states and 86021 transitions. [2023-02-16 00:45:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:27,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-16 00:45:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:27,155 INFO L225 Difference]: With dead ends: 71689 [2023-02-16 00:45:27,155 INFO L226 Difference]: Without dead ends: 71687 [2023-02-16 00:45:27,168 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 00:45:27,169 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:27,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71687 states. [2023-02-16 00:45:28,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71687 to 67589. [2023-02-16 00:45:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 67588 states have (on average 1.166642007456945) internal successors, (78851), 67588 states have internal predecessors, (78851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 78851 transitions. [2023-02-16 00:45:28,239 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 78851 transitions. Word has length 29 [2023-02-16 00:45:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:28,239 INFO L495 AbstractCegarLoop]: Abstraction has 67589 states and 78851 transitions. [2023-02-16 00:45:28,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 78851 transitions. [2023-02-16 00:45:28,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 00:45:28,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:28,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-16 00:45:28,267 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1311711408, now seen corresponding path program 1 times [2023-02-16 00:45:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:28,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847456130] [2023-02-16 00:45:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:45:28,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:28,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847456130] [2023-02-16 00:45:28,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847456130] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:28,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:28,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:28,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304730354] [2023-02-16 00:45:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:28,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:28,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:28,279 INFO L87 Difference]: Start difference. First operand 67589 states and 78851 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:29,509 INFO L93 Difference]: Finished difference Result 109575 states and 126980 transitions. [2023-02-16 00:45:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:29,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-16 00:45:29,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:29,624 INFO L225 Difference]: With dead ends: 109575 [2023-02-16 00:45:29,624 INFO L226 Difference]: Without dead ends: 109573 [2023-02-16 00:45:29,647 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 00:45:29,648 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:29,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2023-02-16 00:45:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 105477. [2023-02-16 00:45:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105477 states, 105476 states have (on average 1.1456160643179492) internal successors, (120835), 105476 states have internal predecessors, (120835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105477 states to 105477 states and 120835 transitions. [2023-02-16 00:45:31,141 INFO L78 Accepts]: Start accepts. Automaton has 105477 states and 120835 transitions. Word has length 30 [2023-02-16 00:45:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:31,141 INFO L495 AbstractCegarLoop]: Abstraction has 105477 states and 120835 transitions. [2023-02-16 00:45:31,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 105477 states and 120835 transitions. [2023-02-16 00:45:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 00:45:31,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:45:31,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:31,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-02-16 00:45:31,189 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:45:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:45:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash 31847730, now seen corresponding path program 1 times [2023-02-16 00:45:31,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:45:31,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324877238] [2023-02-16 00:45:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:45:31,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:45:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:45:31,200 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 00:45:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:45:31,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324877238] [2023-02-16 00:45:31,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324877238] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:45:31,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:45:31,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:45:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682579623] [2023-02-16 00:45:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:45:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:45:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:45:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:45:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:45:31,202 INFO L87 Difference]: Start difference. First operand 105477 states and 120835 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:45:32,749 INFO L93 Difference]: Finished difference Result 236549 states and 268291 transitions. [2023-02-16 00:45:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:45:32,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-16 00:45:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:45:32,762 INFO L225 Difference]: With dead ends: 236549 [2023-02-16 00:45:32,762 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 00:45:32,802 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 00:45:32,803 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:45:32,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:45:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 00:45:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 00:45:32,804 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 00:45:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 00:45:32,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2023-02-16 00:45:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:45:32,804 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 00:45:32,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:45:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 00:45:32,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 00:45:32,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 00:45:32,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-02-16 00:45:32,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 00:45:32,819 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2023-02-16 00:45:32,819 INFO L899 garLoopResultBuilder]: For program point L118-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,819 INFO L899 garLoopResultBuilder]: For program point L168-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,819 INFO L899 garLoopResultBuilder]: For program point L102-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,819 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,819 INFO L899 garLoopResultBuilder]: For program point L169(line 169) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L153-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L154(line 154) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L138-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L139(line 139) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L106-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L902 garLoopResultBuilder]: At program point L189(lines 7 193) the Hoare annotation is: true [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L90-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,820 INFO L899 garLoopResultBuilder]: For program point L173-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point L158-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point L159(line 159) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point L143-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point L110-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 193) the Hoare annotation is: true [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,821 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L78-2(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L128-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L178-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L129(line 129) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L163-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,822 INFO L899 garLoopResultBuilder]: For program point L114-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2023-02-16 00:45:32,823 INFO L899 garLoopResultBuilder]: For program point L133-1(lines 47 188) no Hoare annotation was computed. [2023-02-16 00:45:32,824 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 193) the Hoare annotation is: false [2023-02-16 00:45:32,824 INFO L902 garLoopResultBuilder]: At program point L183-1(lines 47 188) the Hoare annotation is: true [2023-02-16 00:45:32,824 INFO L899 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2023-02-16 00:45:32,826 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:45:32,827 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 00:45:32,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 12:45:32 BoogieIcfgContainer [2023-02-16 00:45:32,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 00:45:32,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 00:45:32,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 00:45:32,833 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 00:45:32,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:45:17" (3/4) ... [2023-02-16 00:45:32,835 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 00:45:32,841 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-16 00:45:32,841 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 00:45:32,842 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 00:45:32,842 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 00:45:32,870 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 00:45:32,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 00:45:32,871 INFO L158 Benchmark]: Toolchain (without parser) took 15958.85ms. Allocated memory was 125.8MB in the beginning and 9.1GB in the end (delta: 9.0GB). Free memory was 96.8MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 973.4MB. Max. memory is 16.1GB. [2023-02-16 00:45:32,871 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:45:32,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.03ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 85.2MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 00:45:32,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.27ms. Allocated memory is still 125.8MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:45:32,874 INFO L158 Benchmark]: Boogie Preprocessor took 29.99ms. Allocated memory is still 125.8MB. Free memory was 83.6MB in the beginning and 82.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:45:32,877 INFO L158 Benchmark]: RCFGBuilder took 329.49ms. Allocated memory is still 125.8MB. Free memory was 82.0MB in the beginning and 67.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-16 00:45:32,878 INFO L158 Benchmark]: TraceAbstraction took 15321.09ms. Allocated memory was 125.8MB in the beginning and 9.1GB in the end (delta: 9.0GB). Free memory was 66.3MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 937.7MB. Max. memory is 16.1GB. [2023-02-16 00:45:32,878 INFO L158 Benchmark]: Witness Printer took 38.11ms. Allocated memory is still 9.1GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 00:45:32,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.03ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 85.2MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.27ms. Allocated memory is still 125.8MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.99ms. Allocated memory is still 125.8MB. Free memory was 83.6MB in the beginning and 82.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.49ms. Allocated memory is still 125.8MB. Free memory was 82.0MB in the beginning and 67.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15321.09ms. Allocated memory was 125.8MB in the beginning and 9.1GB in the end (delta: 9.0GB). Free memory was 66.3MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 937.7MB. Max. memory is 16.1GB. * Witness Printer took 38.11ms. Allocated memory is still 9.1GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.3s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1629 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1629 mSDsluCounter, 5405 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2174 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 3231 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105477occurred in iteration=32, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 33 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4105 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 778 ConstructedInterpolants, 0 QuantifiedInterpolants, 1702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-16 00:45:32,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE