./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_13.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 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:25:18,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:25:18,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:25:18,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:25:18,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:25:18,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:25:18,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:25:18,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:25:18,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:25:18,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:25:18,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:25:18,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:25:18,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:25:18,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:25:18,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:25:18,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:25:18,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:25:18,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:25:18,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:25:18,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:25:18,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:25:18,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:25:18,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:25:18,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:25:18,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:25:18,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:25:18,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:25:18,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:25:18,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:25:18,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:25:18,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:25:18,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:25:18,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:25:18,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:25:18,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:25:18,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:25:18,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:25:18,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:25:18,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:25:18,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:25:18,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:25:18,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:25:18,204 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:25:18,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:25:18,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:25:18,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:25:18,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:25:18,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:25:18,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:25:18,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:25:18,206 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:25:18,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:25:18,207 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:25:18,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:25:18,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:25:18,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:25:18,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:25:18,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:25:18,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:25:18,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:25:18,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:25:18,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:25:18,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:25:18,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:25:18,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:25:18,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:25:18,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:25:18,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:25:18,210 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:25:18,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:25:18,211 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:25:18,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd [2023-02-15 19:25:18,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:25:18,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:25:18,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:25:18,439 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:25:18,439 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:25:18,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2023-02-15 19:25:19,458 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:25:19,657 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:25:19,657 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2023-02-15 19:25:19,662 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c4c9e5e/a3c10295c2194e618e9612f5c62e725c/FLAG8fa04d7f6 [2023-02-15 19:25:19,671 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c4c9e5e/a3c10295c2194e618e9612f5c62e725c [2023-02-15 19:25:19,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:25:19,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:25:19,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:25:19,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:25:19,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:25:19,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420583d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19, skipping insertion in model container [2023-02-15 19:25:19,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:25:19,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:25:19,808 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_13.c[4936,4949] [2023-02-15 19:25:19,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:25:19,823 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:25:19,851 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_13.c[4936,4949] [2023-02-15 19:25:19,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:25:19,863 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:25:19,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19 WrapperNode [2023-02-15 19:25:19,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:25:19,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:25:19,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:25:19,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:25:19,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,911 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 171 [2023-02-15 19:25:19,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:25:19,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:25:19,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:25:19,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:25:19,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:25:19,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:25:19,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:25:19,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:25:19,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (1/1) ... [2023-02-15 19:25:19,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:25:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:25:19,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:25:19,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:25:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:25:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:25:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:25:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:25:20,079 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:25:20,080 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:25:20,228 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:25:20,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:25:20,233 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 19:25:20,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:25:20 BoogieIcfgContainer [2023-02-15 19:25:20,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:25:20,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:25:20,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:25:20,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:25:20,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:25:19" (1/3) ... [2023-02-15 19:25:20,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a411f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:25:20, skipping insertion in model container [2023-02-15 19:25:20,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:25:19" (2/3) ... [2023-02-15 19:25:20,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a411f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:25:20, skipping insertion in model container [2023-02-15 19:25:20,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:25:20" (3/3) ... [2023-02-15 19:25:20,239 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2023-02-15 19:25:20,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:25:20,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:25:20,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:25:20,281 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;@36059867, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:25:20,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:25:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 48 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:25:20,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1359894467, now seen corresponding path program 1 times [2023-02-15 19:25:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374804988] [2023-02-15 19:25:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374804988] [2023-02-15 19:25:20,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374804988] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957708450] [2023-02-15 19:25:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,463 INFO L87 Difference]: Start difference. First operand has 49 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 48 states have internal predecessors, (90), 0 states have call successors, (0), 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 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:20,491 INFO L93 Difference]: Finished difference Result 101 states and 181 transitions. [2023-02-15 19:25:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:20,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 19:25:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:20,498 INFO L225 Difference]: With dead ends: 101 [2023-02-15 19:25:20,498 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 19:25:20,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,502 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:20,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 175 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 19:25:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2023-02-15 19:25:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.896551724137931) internal successors, (110), 58 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 110 transitions. [2023-02-15 19:25:20,526 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 110 transitions. Word has length 20 [2023-02-15 19:25:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,526 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 110 transitions. [2023-02-15 19:25:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 110 transitions. [2023-02-15 19:25:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:25:20,527 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 19:25:20,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1914004475, now seen corresponding path program 1 times [2023-02-15 19:25:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348838895] [2023-02-15 19:25:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348838895] [2023-02-15 19:25:20,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348838895] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404267875] [2023-02-15 19:25:20,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,591 INFO L87 Difference]: Start difference. First operand 59 states and 110 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:20,610 INFO L93 Difference]: Finished difference Result 144 states and 269 transitions. [2023-02-15 19:25:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:20,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 19:25:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:20,611 INFO L225 Difference]: With dead ends: 144 [2023-02-15 19:25:20,611 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 19:25:20,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,613 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 63 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:20,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 19:25:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-15 19:25:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.880952380952381) internal successors, (158), 84 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 158 transitions. [2023-02-15 19:25:20,627 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 158 transitions. Word has length 20 [2023-02-15 19:25:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,627 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 158 transitions. [2023-02-15 19:25:20,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 158 transitions. [2023-02-15 19:25:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 19:25:20,628 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 19:25:20,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash 793156859, now seen corresponding path program 1 times [2023-02-15 19:25:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022830952] [2023-02-15 19:25:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022830952] [2023-02-15 19:25:20,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022830952] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293290411] [2023-02-15 19:25:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,681 INFO L87 Difference]: Start difference. First operand 85 states and 158 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:20,698 INFO L93 Difference]: Finished difference Result 132 states and 240 transitions. [2023-02-15 19:25:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:20,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-15 19:25:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:20,700 INFO L225 Difference]: With dead ends: 132 [2023-02-15 19:25:20,700 INFO L226 Difference]: Without dead ends: 90 [2023-02-15 19:25:20,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,701 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 65 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:20,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-15 19:25:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-02-15 19:25:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.839080459770115) internal successors, (160), 87 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 160 transitions. [2023-02-15 19:25:20,714 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 160 transitions. Word has length 21 [2023-02-15 19:25:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,715 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 160 transitions. [2023-02-15 19:25:20,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 160 transitions. [2023-02-15 19:25:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 19:25:20,716 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 19:25:20,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -795191043, now seen corresponding path program 1 times [2023-02-15 19:25:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758367321] [2023-02-15 19:25:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758367321] [2023-02-15 19:25:20,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758367321] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72128947] [2023-02-15 19:25:20,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,799 INFO L87 Difference]: Start difference. First operand 88 states and 160 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:20,811 INFO L93 Difference]: Finished difference Result 169 states and 309 transitions. [2023-02-15 19:25:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-15 19:25:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:20,814 INFO L225 Difference]: With dead ends: 169 [2023-02-15 19:25:20,816 INFO L226 Difference]: Without dead ends: 167 [2023-02-15 19:25:20,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,817 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 60 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:20,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-02-15 19:25:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 117. [2023-02-15 19:25:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.8362068965517242) internal successors, (213), 116 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 213 transitions. [2023-02-15 19:25:20,835 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 213 transitions. Word has length 21 [2023-02-15 19:25:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,835 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 213 transitions. [2023-02-15 19:25:20,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 213 transitions. [2023-02-15 19:25:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 19:25:20,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 19:25:20,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1816259397, now seen corresponding path program 1 times [2023-02-15 19:25:20,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111158325] [2023-02-15 19:25:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111158325] [2023-02-15 19:25:20,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111158325] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469564930] [2023-02-15 19:25:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,906 INFO L87 Difference]: Start difference. First operand 117 states and 213 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:20,922 INFO L93 Difference]: Finished difference Result 281 states and 515 transitions. [2023-02-15 19:25:20,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:20,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-15 19:25:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:20,923 INFO L225 Difference]: With dead ends: 281 [2023-02-15 19:25:20,924 INFO L226 Difference]: Without dead ends: 169 [2023-02-15 19:25:20,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,925 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:20,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 186 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-02-15 19:25:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2023-02-15 19:25:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.8253012048192772) internal successors, (303), 166 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 303 transitions. [2023-02-15 19:25:20,933 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 303 transitions. Word has length 21 [2023-02-15 19:25:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,933 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 303 transitions. [2023-02-15 19:25:20,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 303 transitions. [2023-02-15 19:25:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 19:25:20,934 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 19:25:20,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1119094160, now seen corresponding path program 1 times [2023-02-15 19:25:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043779625] [2023-02-15 19:25:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043779625] [2023-02-15 19:25:20,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043779625] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:20,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:20,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084875446] [2023-02-15 19:25:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:20,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,960 INFO L87 Difference]: Start difference. First operand 167 states and 303 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:20,967 INFO L93 Difference]: Finished difference Result 252 states and 454 transitions. [2023-02-15 19:25:20,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:20,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 19:25:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:20,968 INFO L225 Difference]: With dead ends: 252 [2023-02-15 19:25:20,968 INFO L226 Difference]: Without dead ends: 171 [2023-02-15 19:25:20,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:20,969 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:20,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-02-15 19:25:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2023-02-15 19:25:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.8035714285714286) internal successors, (303), 168 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 303 transitions. [2023-02-15 19:25:20,975 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 303 transitions. Word has length 22 [2023-02-15 19:25:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:20,976 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 303 transitions. [2023-02-15 19:25:20,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 303 transitions. [2023-02-15 19:25:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 19:25:20,977 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:20,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:20,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 19:25:20,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -469253742, now seen corresponding path program 1 times [2023-02-15 19:25:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:20,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212806117] [2023-02-15 19:25:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:20,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212806117] [2023-02-15 19:25:21,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212806117] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380604367] [2023-02-15 19:25:21,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,011 INFO L87 Difference]: Start difference. First operand 169 states and 303 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,021 INFO L93 Difference]: Finished difference Result 489 states and 881 transitions. [2023-02-15 19:25:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 19:25:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,023 INFO L225 Difference]: With dead ends: 489 [2023-02-15 19:25:21,023 INFO L226 Difference]: Without dead ends: 327 [2023-02-15 19:25:21,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,024 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-02-15 19:25:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2023-02-15 19:25:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.787037037037037) internal successors, (579), 324 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 579 transitions. [2023-02-15 19:25:21,034 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 579 transitions. Word has length 22 [2023-02-15 19:25:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,034 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 579 transitions. [2023-02-15 19:25:21,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 579 transitions. [2023-02-15 19:25:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 19:25:21,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 19:25:21,036 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 551814612, now seen corresponding path program 1 times [2023-02-15 19:25:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955999540] [2023-02-15 19:25:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955999540] [2023-02-15 19:25:21,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955999540] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907981911] [2023-02-15 19:25:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,082 INFO L87 Difference]: Start difference. First operand 325 states and 579 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,094 INFO L93 Difference]: Finished difference Result 417 states and 749 transitions. [2023-02-15 19:25:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 19:25:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,096 INFO L225 Difference]: With dead ends: 417 [2023-02-15 19:25:21,096 INFO L226 Difference]: Without dead ends: 415 [2023-02-15 19:25:21,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,097 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 57 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 224 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-02-15 19:25:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 325. [2023-02-15 19:25:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.7746913580246915) internal successors, (575), 324 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 575 transitions. [2023-02-15 19:25:21,107 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 575 transitions. Word has length 22 [2023-02-15 19:25:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,107 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 575 transitions. [2023-02-15 19:25:21,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 575 transitions. [2023-02-15 19:25:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 19:25:21,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 19:25:21,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1661751056, now seen corresponding path program 1 times [2023-02-15 19:25:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691582918] [2023-02-15 19:25:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691582918] [2023-02-15 19:25:21,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691582918] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785225513] [2023-02-15 19:25:21,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,130 INFO L87 Difference]: Start difference. First operand 325 states and 575 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,140 INFO L93 Difference]: Finished difference Result 613 states and 1097 transitions. [2023-02-15 19:25:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 19:25:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,142 INFO L225 Difference]: With dead ends: 613 [2023-02-15 19:25:21,142 INFO L226 Difference]: Without dead ends: 611 [2023-02-15 19:25:21,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,143 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 54 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-02-15 19:25:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 449. [2023-02-15 19:25:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.7477678571428572) internal successors, (783), 448 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 783 transitions. [2023-02-15 19:25:21,152 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 783 transitions. Word has length 23 [2023-02-15 19:25:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,152 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 783 transitions. [2023-02-15 19:25:21,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 783 transitions. [2023-02-15 19:25:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 19:25:21,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 19:25:21,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1612147886, now seen corresponding path program 1 times [2023-02-15 19:25:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040466287] [2023-02-15 19:25:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040466287] [2023-02-15 19:25:21,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040466287] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195110910] [2023-02-15 19:25:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,174 INFO L87 Difference]: Start difference. First operand 449 states and 783 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,186 INFO L93 Difference]: Finished difference Result 1077 states and 1889 transitions. [2023-02-15 19:25:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 19:25:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,188 INFO L225 Difference]: With dead ends: 1077 [2023-02-15 19:25:21,188 INFO L226 Difference]: Without dead ends: 635 [2023-02-15 19:25:21,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,189 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 60 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 188 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-02-15 19:25:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2023-02-15 19:25:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 1.7389240506329113) internal successors, (1099), 632 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1099 transitions. [2023-02-15 19:25:21,200 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1099 transitions. Word has length 23 [2023-02-15 19:25:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,200 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 1099 transitions. [2023-02-15 19:25:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1099 transitions. [2023-02-15 19:25:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:25:21,202 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 19:25:21,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash 25538215, now seen corresponding path program 1 times [2023-02-15 19:25:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434010305] [2023-02-15 19:25:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434010305] [2023-02-15 19:25:21,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434010305] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424427895] [2023-02-15 19:25:21,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,221 INFO L87 Difference]: Start difference. First operand 633 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,232 INFO L93 Difference]: Finished difference Result 957 states and 1657 transitions. [2023-02-15 19:25:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:25:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,234 INFO L225 Difference]: With dead ends: 957 [2023-02-15 19:25:21,234 INFO L226 Difference]: Without dead ends: 647 [2023-02-15 19:25:21,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,235 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 62 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-02-15 19:25:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2023-02-15 19:25:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.718944099378882) internal successors, (1107), 644 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1107 transitions. [2023-02-15 19:25:21,246 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1107 transitions. Word has length 24 [2023-02-15 19:25:21,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,246 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1107 transitions. [2023-02-15 19:25:21,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1107 transitions. [2023-02-15 19:25:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:25:21,247 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 19:25:21,248 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1562809687, now seen corresponding path program 1 times [2023-02-15 19:25:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295015584] [2023-02-15 19:25:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295015584] [2023-02-15 19:25:21,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295015584] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868762390] [2023-02-15 19:25:21,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,279 INFO L87 Difference]: Start difference. First operand 645 states and 1107 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,294 INFO L93 Difference]: Finished difference Result 1193 states and 2077 transitions. [2023-02-15 19:25:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:25:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,297 INFO L225 Difference]: With dead ends: 1193 [2023-02-15 19:25:21,297 INFO L226 Difference]: Without dead ends: 1191 [2023-02-15 19:25:21,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,298 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 51 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2023-02-15 19:25:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 901. [2023-02-15 19:25:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.6833333333333333) internal successors, (1515), 900 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1515 transitions. [2023-02-15 19:25:21,315 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1515 transitions. Word has length 24 [2023-02-15 19:25:21,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,315 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1515 transitions. [2023-02-15 19:25:21,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1515 transitions. [2023-02-15 19:25:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:25:21,316 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 19:25:21,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1711089255, now seen corresponding path program 1 times [2023-02-15 19:25:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143230234] [2023-02-15 19:25:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143230234] [2023-02-15 19:25:21,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143230234] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705353013] [2023-02-15 19:25:21,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,335 INFO L87 Difference]: Start difference. First operand 901 states and 1515 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,355 INFO L93 Difference]: Finished difference Result 2137 states and 3613 transitions. [2023-02-15 19:25:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 19:25:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,358 INFO L225 Difference]: With dead ends: 2137 [2023-02-15 19:25:21,358 INFO L226 Difference]: Without dead ends: 1255 [2023-02-15 19:25:21,359 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 [2023-02-15 19:25:21,360 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 59 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 189 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-02-15 19:25:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1253. [2023-02-15 19:25:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 1.676517571884984) internal successors, (2099), 1252 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2099 transitions. [2023-02-15 19:25:21,382 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2099 transitions. Word has length 24 [2023-02-15 19:25:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,383 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 2099 transitions. [2023-02-15 19:25:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2099 transitions. [2023-02-15 19:25:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 19:25:21,384 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 19:25:21,384 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1202246301, now seen corresponding path program 1 times [2023-02-15 19:25:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94522937] [2023-02-15 19:25:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94522937] [2023-02-15 19:25:21,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94522937] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499056367] [2023-02-15 19:25:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,402 INFO L87 Difference]: Start difference. First operand 1253 states and 2099 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,420 INFO L93 Difference]: Finished difference Result 1881 states and 3141 transitions. [2023-02-15 19:25:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 19:25:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,423 INFO L225 Difference]: With dead ends: 1881 [2023-02-15 19:25:21,424 INFO L226 Difference]: Without dead ends: 1271 [2023-02-15 19:25:21,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,425 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 61 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2023-02-15 19:25:21,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2023-02-15 19:25:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.6553627760252365) internal successors, (2099), 1268 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2099 transitions. [2023-02-15 19:25:21,446 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2099 transitions. Word has length 25 [2023-02-15 19:25:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,446 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 2099 transitions. [2023-02-15 19:25:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2099 transitions. [2023-02-15 19:25:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 19:25:21,448 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 19:25:21,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1504373093, now seen corresponding path program 1 times [2023-02-15 19:25:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522810735] [2023-02-15 19:25:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522810735] [2023-02-15 19:25:21,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522810735] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680575136] [2023-02-15 19:25:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,474 INFO L87 Difference]: Start difference. First operand 1269 states and 2099 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,503 INFO L93 Difference]: Finished difference Result 2313 states and 3893 transitions. [2023-02-15 19:25:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 19:25:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,509 INFO L225 Difference]: With dead ends: 2313 [2023-02-15 19:25:21,509 INFO L226 Difference]: Without dead ends: 2311 [2023-02-15 19:25:21,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,511 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 48 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 153 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2023-02-15 19:25:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1797. [2023-02-15 19:25:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 1.614142538975501) internal successors, (2899), 1796 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2899 transitions. [2023-02-15 19:25:21,546 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2899 transitions. Word has length 25 [2023-02-15 19:25:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,547 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2899 transitions. [2023-02-15 19:25:21,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2899 transitions. [2023-02-15 19:25:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 19:25:21,548 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-15 19:25:21,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash 483304739, now seen corresponding path program 1 times [2023-02-15 19:25:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019300175] [2023-02-15 19:25:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019300175] [2023-02-15 19:25:21,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019300175] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849544962] [2023-02-15 19:25:21,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,576 INFO L87 Difference]: Start difference. First operand 1797 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,606 INFO L93 Difference]: Finished difference Result 4233 states and 6869 transitions. [2023-02-15 19:25:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 19:25:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,611 INFO L225 Difference]: With dead ends: 4233 [2023-02-15 19:25:21,612 INFO L226 Difference]: Without dead ends: 2471 [2023-02-15 19:25:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,615 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 58 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 190 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2023-02-15 19:25:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2469. [2023-02-15 19:25:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2468 states have (on average 1.608995137763371) internal successors, (3971), 2468 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3971 transitions. [2023-02-15 19:25:21,675 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3971 transitions. Word has length 25 [2023-02-15 19:25:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,675 INFO L495 AbstractCegarLoop]: Abstraction has 2469 states and 3971 transitions. [2023-02-15 19:25:21,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3971 transitions. [2023-02-15 19:25:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:25:21,678 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 19:25:21,678 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash -608860292, now seen corresponding path program 1 times [2023-02-15 19:25:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707189836] [2023-02-15 19:25:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707189836] [2023-02-15 19:25:21,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707189836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312347507] [2023-02-15 19:25:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,714 INFO L87 Difference]: Start difference. First operand 2469 states and 3971 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,740 INFO L93 Difference]: Finished difference Result 3705 states and 5941 transitions. [2023-02-15 19:25:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 19:25:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,745 INFO L225 Difference]: With dead ends: 3705 [2023-02-15 19:25:21,746 INFO L226 Difference]: Without dead ends: 2503 [2023-02-15 19:25:21,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,748 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 60 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2023-02-15 19:25:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2501. [2023-02-15 19:25:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 2500 states have (on average 1.5884) internal successors, (3971), 2500 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3971 transitions. [2023-02-15 19:25:21,790 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3971 transitions. Word has length 26 [2023-02-15 19:25:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,790 INFO L495 AbstractCegarLoop]: Abstraction has 2501 states and 3971 transitions. [2023-02-15 19:25:21,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3971 transitions. [2023-02-15 19:25:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:25:21,791 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 19:25:21,792 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2097759102, now seen corresponding path program 1 times [2023-02-15 19:25:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533784724] [2023-02-15 19:25:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533784724] [2023-02-15 19:25:21,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533784724] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976975492] [2023-02-15 19:25:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,812 INFO L87 Difference]: Start difference. First operand 2501 states and 3971 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:21,854 INFO L93 Difference]: Finished difference Result 4489 states and 7269 transitions. [2023-02-15 19:25:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 19:25:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:21,863 INFO L225 Difference]: With dead ends: 4489 [2023-02-15 19:25:21,863 INFO L226 Difference]: Without dead ends: 4487 [2023-02-15 19:25:21,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,865 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:21,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2023-02-15 19:25:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 3589. [2023-02-15 19:25:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3588 states have (on average 1.5437569676700111) internal successors, (5539), 3588 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5539 transitions. [2023-02-15 19:25:21,949 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5539 transitions. Word has length 26 [2023-02-15 19:25:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:21,949 INFO L495 AbstractCegarLoop]: Abstraction has 3589 states and 5539 transitions. [2023-02-15 19:25:21,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5539 transitions. [2023-02-15 19:25:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 19:25:21,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:21,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:21,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-15 19:25:21,952 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1076690748, now seen corresponding path program 1 times [2023-02-15 19:25:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:21,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608331425] [2023-02-15 19:25:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608331425] [2023-02-15 19:25:21,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608331425] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:21,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:21,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700897916] [2023-02-15 19:25:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:21,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:21,971 INFO L87 Difference]: Start difference. First operand 3589 states and 5539 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:22,027 INFO L93 Difference]: Finished difference Result 8393 states and 13029 transitions. [2023-02-15 19:25:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 19:25:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:22,051 INFO L225 Difference]: With dead ends: 8393 [2023-02-15 19:25:22,051 INFO L226 Difference]: Without dead ends: 4871 [2023-02-15 19:25:22,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,055 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:22,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 191 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2023-02-15 19:25:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4869. [2023-02-15 19:25:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4868 states have (on average 1.538824979457683) internal successors, (7491), 4868 states have internal predecessors, (7491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 7491 transitions. [2023-02-15 19:25:22,142 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 7491 transitions. Word has length 26 [2023-02-15 19:25:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:22,142 INFO L495 AbstractCegarLoop]: Abstraction has 4869 states and 7491 transitions. [2023-02-15 19:25:22,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 7491 transitions. [2023-02-15 19:25:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:25:22,146 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:22,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-15 19:25:22,147 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash 606237144, now seen corresponding path program 1 times [2023-02-15 19:25:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:22,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525486244] [2023-02-15 19:25:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:22,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:22,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525486244] [2023-02-15 19:25:22,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525486244] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:22,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:22,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421376134] [2023-02-15 19:25:22,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,160 INFO L87 Difference]: Start difference. First operand 4869 states and 7491 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:22,237 INFO L93 Difference]: Finished difference Result 7305 states and 11205 transitions. [2023-02-15 19:25:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:22,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 19:25:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:22,242 INFO L225 Difference]: With dead ends: 7305 [2023-02-15 19:25:22,242 INFO L226 Difference]: Without dead ends: 4935 [2023-02-15 19:25:22,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,244 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 59 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:22,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 184 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:22,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2023-02-15 19:25:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4933. [2023-02-15 19:25:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4933 states, 4932 states have (on average 1.5188564476885644) internal successors, (7491), 4932 states have internal predecessors, (7491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7491 transitions. [2023-02-15 19:25:22,313 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7491 transitions. Word has length 27 [2023-02-15 19:25:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:22,314 INFO L495 AbstractCegarLoop]: Abstraction has 4933 states and 7491 transitions. [2023-02-15 19:25:22,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7491 transitions. [2023-02-15 19:25:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:25:22,317 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:22,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:22,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-15 19:25:22,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -982110758, now seen corresponding path program 1 times [2023-02-15 19:25:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13309469] [2023-02-15 19:25:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:22,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:22,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:22,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13309469] [2023-02-15 19:25:22,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13309469] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:22,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:22,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:22,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445027251] [2023-02-15 19:25:22,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:22,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:22,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,331 INFO L87 Difference]: Start difference. First operand 4933 states and 7491 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:22,424 INFO L93 Difference]: Finished difference Result 8713 states and 13509 transitions. [2023-02-15 19:25:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:22,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 19:25:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:22,433 INFO L225 Difference]: With dead ends: 8713 [2023-02-15 19:25:22,433 INFO L226 Difference]: Without dead ends: 8711 [2023-02-15 19:25:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,435 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2023-02-15 19:25:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 7173. [2023-02-15 19:25:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 7172 states have (on average 1.4728109313998885) internal successors, (10563), 7172 states have internal predecessors, (10563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10563 transitions. [2023-02-15 19:25:22,549 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10563 transitions. Word has length 27 [2023-02-15 19:25:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:22,549 INFO L495 AbstractCegarLoop]: Abstraction has 7173 states and 10563 transitions. [2023-02-15 19:25:22,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10563 transitions. [2023-02-15 19:25:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 19:25:22,555 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:22,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-15 19:25:22,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2003179112, now seen corresponding path program 1 times [2023-02-15 19:25:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:22,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830381153] [2023-02-15 19:25:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:22,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:22,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830381153] [2023-02-15 19:25:22,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830381153] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:22,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:22,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:22,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083435892] [2023-02-15 19:25:22,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:22,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:22,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,570 INFO L87 Difference]: Start difference. First operand 7173 states and 10563 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:22,650 INFO L93 Difference]: Finished difference Result 16649 states and 24645 transitions. [2023-02-15 19:25:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:22,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 19:25:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:22,661 INFO L225 Difference]: With dead ends: 16649 [2023-02-15 19:25:22,661 INFO L226 Difference]: Without dead ends: 9607 [2023-02-15 19:25:22,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,668 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 56 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:22,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 192 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2023-02-15 19:25:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 9605. [2023-02-15 19:25:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9605 states, 9604 states have (on average 1.4663681799250312) internal successors, (14083), 9604 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9605 states to 9605 states and 14083 transitions. [2023-02-15 19:25:22,819 INFO L78 Accepts]: Start accepts. Automaton has 9605 states and 14083 transitions. Word has length 27 [2023-02-15 19:25:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:22,819 INFO L495 AbstractCegarLoop]: Abstraction has 9605 states and 14083 transitions. [2023-02-15 19:25:22,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9605 states and 14083 transitions. [2023-02-15 19:25:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:25:22,825 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:22,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:22,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-15 19:25:22,826 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash -380447663, now seen corresponding path program 1 times [2023-02-15 19:25:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424589139] [2023-02-15 19:25:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:22,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:22,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424589139] [2023-02-15 19:25:22,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424589139] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:22,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:22,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59134113] [2023-02-15 19:25:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:22,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:22,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,839 INFO L87 Difference]: Start difference. First operand 9605 states and 14083 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:22,914 INFO L93 Difference]: Finished difference Result 14409 states and 21061 transitions. [2023-02-15 19:25:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:22,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 19:25:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:22,925 INFO L225 Difference]: With dead ends: 14409 [2023-02-15 19:25:22,925 INFO L226 Difference]: Without dead ends: 9735 [2023-02-15 19:25:22,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:22,929 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 58 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:22,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2023-02-15 19:25:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 9733. [2023-02-15 19:25:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9733 states, 9732 states have (on average 1.447081792026305) internal successors, (14083), 9732 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 14083 transitions. [2023-02-15 19:25:23,113 INFO L78 Accepts]: Start accepts. Automaton has 9733 states and 14083 transitions. Word has length 28 [2023-02-15 19:25:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:23,113 INFO L495 AbstractCegarLoop]: Abstraction has 9733 states and 14083 transitions. [2023-02-15 19:25:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 9733 states and 14083 transitions. [2023-02-15 19:25:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:25:23,118 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:23,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:23,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-15 19:25:23,119 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:23,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1968795565, now seen corresponding path program 1 times [2023-02-15 19:25:23,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:23,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971076978] [2023-02-15 19:25:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:23,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:23,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971076978] [2023-02-15 19:25:23,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971076978] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:23,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:23,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297828451] [2023-02-15 19:25:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:23,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:23,132 INFO L87 Difference]: Start difference. First operand 9733 states and 14083 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:23,276 INFO L93 Difference]: Finished difference Result 16905 states and 24965 transitions. [2023-02-15 19:25:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 19:25:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:23,294 INFO L225 Difference]: With dead ends: 16905 [2023-02-15 19:25:23,294 INFO L226 Difference]: Without dead ends: 16903 [2023-02-15 19:25:23,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:23,296 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 39 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:23,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 147 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16903 states. [2023-02-15 19:25:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16903 to 14341. [2023-02-15 19:25:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 1.4016039051603906) internal successors, (20099), 14340 states have internal predecessors, (20099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 20099 transitions. [2023-02-15 19:25:23,521 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 20099 transitions. Word has length 28 [2023-02-15 19:25:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:23,521 INFO L495 AbstractCegarLoop]: Abstraction has 14341 states and 20099 transitions. [2023-02-15 19:25:23,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 20099 transitions. [2023-02-15 19:25:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:25:23,532 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:23,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:23,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-15 19:25:23,533 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1305103377, now seen corresponding path program 1 times [2023-02-15 19:25:23,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922884056] [2023-02-15 19:25:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:23,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922884056] [2023-02-15 19:25:23,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922884056] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:23,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:23,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150366477] [2023-02-15 19:25:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:23,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:23,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:23,548 INFO L87 Difference]: Start difference. First operand 14341 states and 20099 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:23,769 INFO L93 Difference]: Finished difference Result 33033 states and 46469 transitions. [2023-02-15 19:25:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:23,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 19:25:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:23,792 INFO L225 Difference]: With dead ends: 33033 [2023-02-15 19:25:23,793 INFO L226 Difference]: Without dead ends: 18951 [2023-02-15 19:25:23,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:23,806 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 55 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:23,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18951 states. [2023-02-15 19:25:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18951 to 18949. [2023-02-15 19:25:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18949 states, 18948 states have (on average 1.3917563858982478) internal successors, (26371), 18948 states have internal predecessors, (26371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18949 states to 18949 states and 26371 transitions. [2023-02-15 19:25:24,155 INFO L78 Accepts]: Start accepts. Automaton has 18949 states and 26371 transitions. Word has length 28 [2023-02-15 19:25:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:24,155 INFO L495 AbstractCegarLoop]: Abstraction has 18949 states and 26371 transitions. [2023-02-15 19:25:24,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 18949 states and 26371 transitions. [2023-02-15 19:25:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:25:24,167 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:24,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-15 19:25:24,167 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -902905267, now seen corresponding path program 1 times [2023-02-15 19:25:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968246990] [2023-02-15 19:25:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968246990] [2023-02-15 19:25:24,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968246990] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:24,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:24,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189918853] [2023-02-15 19:25:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:24,181 INFO L87 Difference]: Start difference. First operand 18949 states and 26371 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:24,333 INFO L93 Difference]: Finished difference Result 28425 states and 39429 transitions. [2023-02-15 19:25:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:24,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 19:25:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:24,350 INFO L225 Difference]: With dead ends: 28425 [2023-02-15 19:25:24,350 INFO L226 Difference]: Without dead ends: 19207 [2023-02-15 19:25:24,359 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 [2023-02-15 19:25:24,360 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:24,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2023-02-15 19:25:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 19205. [2023-02-15 19:25:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19205 states, 19204 states have (on average 1.3732034992709852) internal successors, (26371), 19204 states have internal predecessors, (26371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19205 states to 19205 states and 26371 transitions. [2023-02-15 19:25:24,727 INFO L78 Accepts]: Start accepts. Automaton has 19205 states and 26371 transitions. Word has length 29 [2023-02-15 19:25:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:24,727 INFO L495 AbstractCegarLoop]: Abstraction has 19205 states and 26371 transitions. [2023-02-15 19:25:24,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 19205 states and 26371 transitions. [2023-02-15 19:25:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:25:24,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:24,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-15 19:25:24,739 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1803714127, now seen corresponding path program 1 times [2023-02-15 19:25:24,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:24,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031338851] [2023-02-15 19:25:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:24,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:24,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031338851] [2023-02-15 19:25:24,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031338851] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:24,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:24,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:24,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608146012] [2023-02-15 19:25:24,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:24,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:24,753 INFO L87 Difference]: Start difference. First operand 19205 states and 26371 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:25,026 INFO L93 Difference]: Finished difference Result 32777 states and 45829 transitions. [2023-02-15 19:25:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:25,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 19:25:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:25,054 INFO L225 Difference]: With dead ends: 32777 [2023-02-15 19:25:25,055 INFO L226 Difference]: Without dead ends: 32775 [2023-02-15 19:25:25,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:25,059 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:25,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 145 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32775 states. [2023-02-15 19:25:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32775 to 28677. [2023-02-15 19:25:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28677 states, 28676 states have (on average 1.3302761891477193) internal successors, (38147), 28676 states have internal predecessors, (38147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28677 states to 28677 states and 38147 transitions. [2023-02-15 19:25:25,504 INFO L78 Accepts]: Start accepts. Automaton has 28677 states and 38147 transitions. Word has length 29 [2023-02-15 19:25:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:25,504 INFO L495 AbstractCegarLoop]: Abstraction has 28677 states and 38147 transitions. [2023-02-15 19:25:25,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 28677 states and 38147 transitions. [2023-02-15 19:25:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 19:25:25,519 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:25,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:25,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-15 19:25:25,520 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 782645773, now seen corresponding path program 1 times [2023-02-15 19:25:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:25,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575029398] [2023-02-15 19:25:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:25,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:25,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575029398] [2023-02-15 19:25:25,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575029398] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:25,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:25,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:25,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778529990] [2023-02-15 19:25:25,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:25,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:25,534 INFO L87 Difference]: Start difference. First operand 28677 states and 38147 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:25,967 INFO L93 Difference]: Finished difference Result 65545 states and 87301 transitions. [2023-02-15 19:25:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 19:25:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:25,998 INFO L225 Difference]: With dead ends: 65545 [2023-02-15 19:25:25,998 INFO L226 Difference]: Without dead ends: 37383 [2023-02-15 19:25:26,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:26,019 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:26,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 194 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37383 states. [2023-02-15 19:25:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37383 to 37381. [2023-02-15 19:25:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37381 states, 37380 states have (on average 1.315008025682183) internal successors, (49155), 37380 states have internal predecessors, (49155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37381 states to 37381 states and 49155 transitions. [2023-02-15 19:25:26,657 INFO L78 Accepts]: Start accepts. Automaton has 37381 states and 49155 transitions. Word has length 29 [2023-02-15 19:25:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:26,657 INFO L495 AbstractCegarLoop]: Abstraction has 37381 states and 49155 transitions. [2023-02-15 19:25:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37381 states and 49155 transitions. [2023-02-15 19:25:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:25:26,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:26,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:26,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-15 19:25:26,671 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash 80778534, now seen corresponding path program 1 times [2023-02-15 19:25:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:26,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899069361] [2023-02-15 19:25:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:26,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:26,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899069361] [2023-02-15 19:25:26,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899069361] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:26,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:26,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:26,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951730915] [2023-02-15 19:25:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:26,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:26,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:26,684 INFO L87 Difference]: Start difference. First operand 37381 states and 49155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:26,961 INFO L93 Difference]: Finished difference Result 56073 states and 73477 transitions. [2023-02-15 19:25:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 19:25:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:26,997 INFO L225 Difference]: With dead ends: 56073 [2023-02-15 19:25:26,997 INFO L226 Difference]: Without dead ends: 37895 [2023-02-15 19:25:27,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:27,014 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 56 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:27,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37895 states. [2023-02-15 19:25:27,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37895 to 37893. [2023-02-15 19:25:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37893 states, 37892 states have (on average 1.2972395228544285) internal successors, (49155), 37892 states have internal predecessors, (49155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37893 states to 37893 states and 49155 transitions. [2023-02-15 19:25:27,648 INFO L78 Accepts]: Start accepts. Automaton has 37893 states and 49155 transitions. Word has length 30 [2023-02-15 19:25:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:27,648 INFO L495 AbstractCegarLoop]: Abstraction has 37893 states and 49155 transitions. [2023-02-15 19:25:27,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 37893 states and 49155 transitions. [2023-02-15 19:25:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:25:27,663 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:27,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:27,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-15 19:25:27,663 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1507569368, now seen corresponding path program 1 times [2023-02-15 19:25:27,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:27,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092766569] [2023-02-15 19:25:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:27,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:27,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:27,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092766569] [2023-02-15 19:25:27,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092766569] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:27,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:27,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447981651] [2023-02-15 19:25:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:27,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:27,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:27,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:27,676 INFO L87 Difference]: Start difference. First operand 37893 states and 49155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:28,437 INFO L93 Difference]: Finished difference Result 110601 states and 141317 transitions. [2023-02-15 19:25:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 19:25:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:28,508 INFO L225 Difference]: With dead ends: 110601 [2023-02-15 19:25:28,508 INFO L226 Difference]: Without dead ends: 73735 [2023-02-15 19:25:28,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:28,535 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:28,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73735 states. [2023-02-15 19:25:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73735 to 73733. [2023-02-15 19:25:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73733 states, 73732 states have (on average 1.2499728747355288) internal successors, (92163), 73732 states have internal predecessors, (92163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 92163 transitions. [2023-02-15 19:25:29,858 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 92163 transitions. Word has length 30 [2023-02-15 19:25:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:29,858 INFO L495 AbstractCegarLoop]: Abstraction has 73733 states and 92163 transitions. [2023-02-15 19:25:29,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 92163 transitions. [2023-02-15 19:25:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 19:25:29,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:29,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:29,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-15 19:25:29,886 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash -486501014, now seen corresponding path program 1 times [2023-02-15 19:25:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:29,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786572158] [2023-02-15 19:25:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:29,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786572158] [2023-02-15 19:25:29,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786572158] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:29,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:29,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955016332] [2023-02-15 19:25:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:29,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:29,908 INFO L87 Difference]: Start difference. First operand 73733 states and 92163 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:30,910 INFO L93 Difference]: Finished difference Result 79881 states and 102405 transitions. [2023-02-15 19:25:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 19:25:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:30,995 INFO L225 Difference]: With dead ends: 79881 [2023-02-15 19:25:30,995 INFO L226 Difference]: Without dead ends: 79879 [2023-02-15 19:25:31,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:31,016 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 33 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:31,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 184 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:25:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79879 states. [2023-02-15 19:25:32,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79879 to 73733. [2023-02-15 19:25:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73733 states, 73732 states have (on average 1.2360847393262084) internal successors, (91139), 73732 states have internal predecessors, (91139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 91139 transitions. [2023-02-15 19:25:32,678 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 91139 transitions. Word has length 30 [2023-02-15 19:25:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 73733 states and 91139 transitions. [2023-02-15 19:25:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 91139 transitions. [2023-02-15 19:25:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 19:25:32,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:32,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-15 19:25:32,777 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 510205634, now seen corresponding path program 1 times [2023-02-15 19:25:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:32,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345744721] [2023-02-15 19:25:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345744721] [2023-02-15 19:25:32,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345744721] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:32,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:32,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505284728] [2023-02-15 19:25:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:32,794 INFO L87 Difference]: Start difference. First operand 73733 states and 91139 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:34,019 INFO L93 Difference]: Finished difference Result 121865 states and 151557 transitions. [2023-02-15 19:25:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-02-15 19:25:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:34,137 INFO L225 Difference]: With dead ends: 121865 [2023-02-15 19:25:34,138 INFO L226 Difference]: Without dead ends: 121863 [2023-02-15 19:25:34,153 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 [2023-02-15 19:25:34,154 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 30 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:34,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 141 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121863 states. [2023-02-15 19:25:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121863 to 113669. [2023-02-15 19:25:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113669 states, 113668 states have (on average 1.2071911179927508) internal successors, (137219), 113668 states have internal predecessors, (137219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113669 states to 113669 states and 137219 transitions. [2023-02-15 19:25:35,772 INFO L78 Accepts]: Start accepts. Automaton has 113669 states and 137219 transitions. Word has length 31 [2023-02-15 19:25:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:35,772 INFO L495 AbstractCegarLoop]: Abstraction has 113669 states and 137219 transitions. [2023-02-15 19:25:35,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 113669 states and 137219 transitions. [2023-02-15 19:25:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 19:25:36,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:36,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-02-15 19:25:36,096 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash -510862720, now seen corresponding path program 1 times [2023-02-15 19:25:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:36,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568390215] [2023-02-15 19:25:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:36,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568390215] [2023-02-15 19:25:36,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568390215] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:36,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:36,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155713464] [2023-02-15 19:25:36,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:36,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:36,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:36,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:36,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:36,114 INFO L87 Difference]: Start difference. First operand 113669 states and 137219 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:37,695 INFO L93 Difference]: Finished difference Result 257033 states and 309253 transitions. [2023-02-15 19:25:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:37,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-02-15 19:25:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:37,838 INFO L225 Difference]: With dead ends: 257033 [2023-02-15 19:25:37,838 INFO L226 Difference]: Without dead ends: 144391 [2023-02-15 19:25:37,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:37,902 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 52 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:37,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 196 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144391 states. [2023-02-15 19:25:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144391 to 144389. [2023-02-15 19:25:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144389 states, 144388 states have (on average 1.177293126852647) internal successors, (169987), 144388 states have internal predecessors, (169987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144389 states to 144389 states and 169987 transitions. [2023-02-15 19:25:40,454 INFO L78 Accepts]: Start accepts. Automaton has 144389 states and 169987 transitions. Word has length 31 [2023-02-15 19:25:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:40,454 INFO L495 AbstractCegarLoop]: Abstraction has 144389 states and 169987 transitions. [2023-02-15 19:25:40,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:40,455 INFO L276 IsEmpty]: Start isEmpty. Operand 144389 states and 169987 transitions. [2023-02-15 19:25:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 19:25:40,524 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:40,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-02-15 19:25:40,524 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1363278403, now seen corresponding path program 1 times [2023-02-15 19:25:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:40,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759672269] [2023-02-15 19:25:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:40,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759672269] [2023-02-15 19:25:40,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759672269] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:40,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:40,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807184684] [2023-02-15 19:25:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:40,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:40,544 INFO L87 Difference]: Start difference. First operand 144389 states and 169987 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:25:42,200 INFO L93 Difference]: Finished difference Result 218121 states and 257029 transitions. [2023-02-15 19:25:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:25:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-02-15 19:25:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:25:42,391 INFO L225 Difference]: With dead ends: 218121 [2023-02-15 19:25:42,391 INFO L226 Difference]: Without dead ends: 147463 [2023-02-15 19:25:42,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:42,455 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 54 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:25:42,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:25:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147463 states. [2023-02-15 19:25:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147463 to 147461. [2023-02-15 19:25:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147461 states, 147460 states have (on average 1.1666553641665536) internal successors, (172035), 147460 states have internal predecessors, (172035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147461 states to 147461 states and 172035 transitions. [2023-02-15 19:25:45,324 INFO L78 Accepts]: Start accepts. Automaton has 147461 states and 172035 transitions. Word has length 32 [2023-02-15 19:25:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:25:45,324 INFO L495 AbstractCegarLoop]: Abstraction has 147461 states and 172035 transitions. [2023-02-15 19:25:45,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:25:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 147461 states and 172035 transitions. [2023-02-15 19:25:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 19:25:45,389 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:25:45,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:25:45,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-02-15 19:25:45,389 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:25:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:25:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1343340991, now seen corresponding path program 1 times [2023-02-15 19:25:45,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:25:45,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704273253] [2023-02-15 19:25:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:25:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:25:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:25:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:25:45,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:25:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704273253] [2023-02-15 19:25:45,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704273253] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:25:45,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:25:45,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:25:45,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856867365] [2023-02-15 19:25:45,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:25:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:25:45,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:25:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:25:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:25:45,448 INFO L87 Difference]: Start difference. First operand 147461 states and 172035 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)