./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.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 87f1dffc4791cf25ae510fd8866e3e496425d62832b1b02adb55ef79c14eda4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:41:09,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:41:09,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:41:09,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:41:09,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:41:09,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:41:09,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:41:09,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:41:09,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:41:09,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:41:09,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:41:09,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:41:09,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:41:09,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:41:09,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:41:09,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:41:09,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:41:09,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:41:09,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:41:09,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:41:09,271 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:41:09,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:41:09,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:41:09,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:41:09,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:41:09,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:41:09,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:41:09,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:41:09,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:41:09,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:41:09,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:41:09,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:41:09,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:41:09,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:41:09,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:41:09,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:41:09,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:41:09,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:41:09,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:41:09,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:41:09,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:41:09,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:41:09,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:41:09,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:41:09,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:41:09,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:41:09,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:41:09,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:41:09,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:41:09,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:41:09,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:41:09,333 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:41:09,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:41:09,334 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:41:09,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:41:09,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:41:09,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:41:09,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:41:09,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:41:09,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:41:09,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:41:09,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:41:09,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:41:09,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:41:09,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:41:09,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:41:09,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:41:09,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:41:09,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:41:09,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:41:09,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:41:09,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:41:09,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:41:09,339 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:41:09,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:41:09,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:41:09,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87f1dffc4791cf25ae510fd8866e3e496425d62832b1b02adb55ef79c14eda4f [2022-07-21 05:41:09,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:41:09,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:41:09,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:41:09,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:41:09,669 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:41:09,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-07-21 05:41:09,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a485946c7/06138575de2645fb8de438682729aab0/FLAGb7f5e9ce6 [2022-07-21 05:41:10,176 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:41:10,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-07-21 05:41:10,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a485946c7/06138575de2645fb8de438682729aab0/FLAGb7f5e9ce6 [2022-07-21 05:41:10,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a485946c7/06138575de2645fb8de438682729aab0 [2022-07-21 05:41:10,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:41:10,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:41:10,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:41:10,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:41:10,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:41:10,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29095764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10, skipping insertion in model container [2022-07-21 05:41:10,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:41:10,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:41:10,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2022-07-21 05:41:10,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:41:10,804 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:41:10,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2022-07-21 05:41:10,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:41:10,892 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:41:10,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10 WrapperNode [2022-07-21 05:41:10,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:41:10,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:41:10,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:41:10,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:41:10,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,963 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 332 [2022-07-21 05:41:10,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:41:10,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:41:10,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:41:10,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:41:10,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:10,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:11,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:11,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:11,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:41:11,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:41:11,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:41:11,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:41:11,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (1/1) ... [2022-07-21 05:41:11,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:41:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:41:11,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:41:11,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:41:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:41:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:41:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:41:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:41:11,171 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:41:11,172 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:41:11,448 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:41:11,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:41:11,460 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:41:11,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:41:11 BoogieIcfgContainer [2022-07-21 05:41:11,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:41:11,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:41:11,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:41:11,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:41:11,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:41:10" (1/3) ... [2022-07-21 05:41:11,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bc350a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:41:11, skipping insertion in model container [2022-07-21 05:41:11,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:41:10" (2/3) ... [2022-07-21 05:41:11,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bc350a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:41:11, skipping insertion in model container [2022-07-21 05:41:11,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:41:11" (3/3) ... [2022-07-21 05:41:11,482 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-07-21 05:41:11,504 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:41:11,504 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:41:11,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:41:11,554 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e35f74e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6aad4f02 [2022-07-21 05:41:11,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:41:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 05:41:11,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:11,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:11,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1258202004, now seen corresponding path program 1 times [2022-07-21 05:41:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:11,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534788351] [2022-07-21 05:41:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:11,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534788351] [2022-07-21 05:41:11,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534788351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:11,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:11,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:11,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432014751] [2022-07-21 05:41:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:11,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:11,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:11,855 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:11,907 INFO L93 Difference]: Finished difference Result 199 states and 318 transitions. [2022-07-21 05:41:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-21 05:41:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:11,918 INFO L225 Difference]: With dead ends: 199 [2022-07-21 05:41:11,918 INFO L226 Difference]: Without dead ends: 128 [2022-07-21 05:41:11,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:11,924 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 101 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:11,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 300 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-21 05:41:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2022-07-21 05:41:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.504) internal successors, (188), 125 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2022-07-21 05:41:11,978 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 37 [2022-07-21 05:41:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:11,978 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2022-07-21 05:41:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2022-07-21 05:41:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 05:41:11,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:11,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:11,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:41:11,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2004783502, now seen corresponding path program 1 times [2022-07-21 05:41:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517012210] [2022-07-21 05:41:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:12,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:12,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517012210] [2022-07-21 05:41:12,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517012210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:12,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:12,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:12,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066564050] [2022-07-21 05:41:12,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:12,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:12,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:12,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:12,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:12,071 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:12,129 INFO L93 Difference]: Finished difference Result 306 states and 472 transitions. [2022-07-21 05:41:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:12,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-21 05:41:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:12,132 INFO L225 Difference]: With dead ends: 306 [2022-07-21 05:41:12,132 INFO L226 Difference]: Without dead ends: 200 [2022-07-21 05:41:12,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:12,134 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:12,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-21 05:41:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2022-07-21 05:41:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 197 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 301 transitions. [2022-07-21 05:41:12,160 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 301 transitions. Word has length 38 [2022-07-21 05:41:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:12,161 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 301 transitions. [2022-07-21 05:41:12,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,161 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 301 transitions. [2022-07-21 05:41:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 05:41:12,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:12,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:12,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:41:12,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash 337157617, now seen corresponding path program 1 times [2022-07-21 05:41:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:12,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788000643] [2022-07-21 05:41:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:12,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788000643] [2022-07-21 05:41:12,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788000643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:12,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:12,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32101728] [2022-07-21 05:41:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:12,230 INFO L87 Difference]: Start difference. First operand 198 states and 301 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:12,283 INFO L93 Difference]: Finished difference Result 490 states and 759 transitions. [2022-07-21 05:41:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-07-21 05:41:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:12,292 INFO L225 Difference]: With dead ends: 490 [2022-07-21 05:41:12,292 INFO L226 Difference]: Without dead ends: 312 [2022-07-21 05:41:12,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:12,297 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:12,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 239 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-21 05:41:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2022-07-21 05:41:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.5307443365695792) internal successors, (473), 309 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 473 transitions. [2022-07-21 05:41:12,354 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 473 transitions. Word has length 39 [2022-07-21 05:41:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:12,355 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 473 transitions. [2022-07-21 05:41:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 473 transitions. [2022-07-21 05:41:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 05:41:12,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:12,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:12,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:41:12,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1621587317, now seen corresponding path program 1 times [2022-07-21 05:41:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:12,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043098438] [2022-07-21 05:41:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:12,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043098438] [2022-07-21 05:41:12,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043098438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:12,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:12,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:41:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374256731] [2022-07-21 05:41:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:12,432 INFO L87 Difference]: Start difference. First operand 310 states and 473 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:12,599 INFO L93 Difference]: Finished difference Result 1470 states and 2285 transitions. [2022-07-21 05:41:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:41:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-07-21 05:41:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:12,606 INFO L225 Difference]: With dead ends: 1470 [2022-07-21 05:41:12,606 INFO L226 Difference]: Without dead ends: 1180 [2022-07-21 05:41:12,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:41:12,616 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 486 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:12,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 660 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-07-21 05:41:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 598. [2022-07-21 05:41:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5226130653266332) internal successors, (909), 597 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 909 transitions. [2022-07-21 05:41:12,693 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 909 transitions. Word has length 40 [2022-07-21 05:41:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:12,695 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 909 transitions. [2022-07-21 05:41:12,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 909 transitions. [2022-07-21 05:41:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 05:41:12,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:12,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:12,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:41:12,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1289857042, now seen corresponding path program 1 times [2022-07-21 05:41:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:12,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722876686] [2022-07-21 05:41:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:12,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722876686] [2022-07-21 05:41:12,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722876686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:12,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:12,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:41:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778489836] [2022-07-21 05:41:12,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:12,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:12,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:12,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:12,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:12,849 INFO L87 Difference]: Start difference. First operand 598 states and 909 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:13,077 INFO L93 Difference]: Finished difference Result 2068 states and 3144 transitions. [2022-07-21 05:41:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:41:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-21 05:41:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:13,085 INFO L225 Difference]: With dead ends: 2068 [2022-07-21 05:41:13,085 INFO L226 Difference]: Without dead ends: 1490 [2022-07-21 05:41:13,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:13,091 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 317 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:13,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 362 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-07-21 05:41:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1486. [2022-07-21 05:41:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 1.5063973063973064) internal successors, (2237), 1485 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2237 transitions. [2022-07-21 05:41:13,285 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2237 transitions. Word has length 41 [2022-07-21 05:41:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:13,286 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2237 transitions. [2022-07-21 05:41:13,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2237 transitions. [2022-07-21 05:41:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 05:41:13,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:13,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:13,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:41:13,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:13,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash 97793413, now seen corresponding path program 1 times [2022-07-21 05:41:13,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:13,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462109123] [2022-07-21 05:41:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:13,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462109123] [2022-07-21 05:41:13,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462109123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:13,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:13,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:41:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409892901] [2022-07-21 05:41:13,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:13,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:13,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:13,381 INFO L87 Difference]: Start difference. First operand 1486 states and 2237 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:13,817 INFO L93 Difference]: Finished difference Result 4418 states and 6671 transitions. [2022-07-21 05:41:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:41:13,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-21 05:41:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:13,829 INFO L225 Difference]: With dead ends: 4418 [2022-07-21 05:41:13,829 INFO L226 Difference]: Without dead ends: 2952 [2022-07-21 05:41:13,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:41:13,832 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 494 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:13,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 139 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:41:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-21 05:41:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2950. [2022-07-21 05:41:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2949 states have (on average 1.4991522550016956) internal successors, (4421), 2949 states have internal predecessors, (4421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4421 transitions. [2022-07-21 05:41:14,145 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4421 transitions. Word has length 43 [2022-07-21 05:41:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:14,146 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 4421 transitions. [2022-07-21 05:41:14,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4421 transitions. [2022-07-21 05:41:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 05:41:14,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:14,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:14,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:41:14,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1723958080, now seen corresponding path program 1 times [2022-07-21 05:41:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:14,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217564031] [2022-07-21 05:41:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:14,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217564031] [2022-07-21 05:41:14,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217564031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:14,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:14,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:41:14,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834759998] [2022-07-21 05:41:14,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:14,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:14,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:14,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:14,236 INFO L87 Difference]: Start difference. First operand 2950 states and 4421 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:14,883 INFO L93 Difference]: Finished difference Result 6072 states and 9014 transitions. [2022-07-21 05:41:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:41:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-21 05:41:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:14,907 INFO L225 Difference]: With dead ends: 6072 [2022-07-21 05:41:14,907 INFO L226 Difference]: Without dead ends: 6070 [2022-07-21 05:41:14,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:41:14,910 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 184 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:14,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 571 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2022-07-21 05:41:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 3142. [2022-07-21 05:41:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.4686405603311048) internal successors, (4613), 3141 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4613 transitions. [2022-07-21 05:41:15,324 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4613 transitions. Word has length 43 [2022-07-21 05:41:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:15,325 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4613 transitions. [2022-07-21 05:41:15,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4613 transitions. [2022-07-21 05:41:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:41:15,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:15,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:15,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:41:15,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1913665939, now seen corresponding path program 1 times [2022-07-21 05:41:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:15,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901559004] [2022-07-21 05:41:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901559004] [2022-07-21 05:41:15,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901559004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:15,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:15,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767035728] [2022-07-21 05:41:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:15,359 INFO L87 Difference]: Start difference. First operand 3142 states and 4613 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:15,818 INFO L93 Difference]: Finished difference Result 7604 states and 11171 transitions. [2022-07-21 05:41:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-21 05:41:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:15,834 INFO L225 Difference]: With dead ends: 7604 [2022-07-21 05:41:15,835 INFO L226 Difference]: Without dead ends: 4482 [2022-07-21 05:41:15,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:15,839 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:15,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2022-07-21 05:41:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4480. [2022-07-21 05:41:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.4594775619557938) internal successors, (6537), 4479 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6537 transitions. [2022-07-21 05:41:16,336 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6537 transitions. Word has length 44 [2022-07-21 05:41:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:16,336 INFO L495 AbstractCegarLoop]: Abstraction has 4480 states and 6537 transitions. [2022-07-21 05:41:16,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6537 transitions. [2022-07-21 05:41:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 05:41:16,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:16,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:16,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:41:16,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1827424966, now seen corresponding path program 1 times [2022-07-21 05:41:16,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002388586] [2022-07-21 05:41:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:16,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:16,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002388586] [2022-07-21 05:41:16,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002388586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:41:16,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373989448] [2022-07-21 05:41:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:16,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:41:16,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:41:16,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:41:16,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:41:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:16,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 05:41:16,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:41:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:41:16,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:41:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:41:17,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373989448] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:41:17,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:41:17,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 17 [2022-07-21 05:41:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476535806] [2022-07-21 05:41:17,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:41:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:41:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:41:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:41:17,100 INFO L87 Difference]: Start difference. First operand 4480 states and 6537 transitions. Second operand has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:26,150 INFO L93 Difference]: Finished difference Result 40883 states and 58845 transitions. [2022-07-21 05:41:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-07-21 05:41:26,150 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 0 states have call successors, (0), 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 61 [2022-07-21 05:41:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:26,251 INFO L225 Difference]: With dead ends: 40883 [2022-07-21 05:41:26,251 INFO L226 Difference]: Without dead ends: 36909 [2022-07-21 05:41:26,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9703 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3948, Invalid=18402, Unknown=0, NotChecked=0, Total=22350 [2022-07-21 05:41:26,283 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 6006 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6006 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:26,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6006 Valid, 2546 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:41:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36909 states. [2022-07-21 05:41:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36909 to 15628. [2022-07-21 05:41:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15628 states, 15627 states have (on average 1.4402636462532796) internal successors, (22507), 15627 states have internal predecessors, (22507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15628 states to 15628 states and 22507 transitions. [2022-07-21 05:41:28,513 INFO L78 Accepts]: Start accepts. Automaton has 15628 states and 22507 transitions. Word has length 61 [2022-07-21 05:41:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:28,513 INFO L495 AbstractCegarLoop]: Abstraction has 15628 states and 22507 transitions. [2022-07-21 05:41:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 17 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 15628 states and 22507 transitions. [2022-07-21 05:41:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:41:28,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:28,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:28,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 05:41:28,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:41:28,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 621000165, now seen corresponding path program 1 times [2022-07-21 05:41:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:28,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760640027] [2022-07-21 05:41:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:28,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760640027] [2022-07-21 05:41:28,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760640027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:28,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:28,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860535684] [2022-07-21 05:41:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:28,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:28,801 INFO L87 Difference]: Start difference. First operand 15628 states and 22507 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:30,627 INFO L93 Difference]: Finished difference Result 25124 states and 35975 transitions. [2022-07-21 05:41:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:30,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-21 05:41:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:30,656 INFO L225 Difference]: With dead ends: 25124 [2022-07-21 05:41:30,656 INFO L226 Difference]: Without dead ends: 16161 [2022-07-21 05:41:30,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:30,674 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 67 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:30,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16161 states. [2022-07-21 05:41:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16161 to 15717. [2022-07-21 05:41:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15717 states, 15716 states have (on average 1.4122550267243574) internal successors, (22195), 15716 states have internal predecessors, (22195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15717 states to 15717 states and 22195 transitions. [2022-07-21 05:41:32,321 INFO L78 Accepts]: Start accepts. Automaton has 15717 states and 22195 transitions. Word has length 62 [2022-07-21 05:41:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:32,321 INFO L495 AbstractCegarLoop]: Abstraction has 15717 states and 22195 transitions. [2022-07-21 05:41:32,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15717 states and 22195 transitions. [2022-07-21 05:41:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:41:32,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:32,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:41:32,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2941002, now seen corresponding path program 1 times [2022-07-21 05:41:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:32,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512580481] [2022-07-21 05:41:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:32,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512580481] [2022-07-21 05:41:32,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512580481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:32,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:32,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759927665] [2022-07-21 05:41:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:32,384 INFO L87 Difference]: Start difference. First operand 15717 states and 22195 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:35,141 INFO L93 Difference]: Finished difference Result 39144 states and 54917 transitions. [2022-07-21 05:41:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:35,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-21 05:41:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:35,194 INFO L225 Difference]: With dead ends: 39144 [2022-07-21 05:41:35,195 INFO L226 Difference]: Without dead ends: 26345 [2022-07-21 05:41:35,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:35,231 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 63 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:35,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 222 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26345 states. [2022-07-21 05:41:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26345 to 26294. [2022-07-21 05:41:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26294 states, 26293 states have (on average 1.3832198684060397) internal successors, (36369), 26293 states have internal predecessors, (36369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:37,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26294 states to 26294 states and 36369 transitions. [2022-07-21 05:41:37,993 INFO L78 Accepts]: Start accepts. Automaton has 26294 states and 36369 transitions. Word has length 62 [2022-07-21 05:41:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:37,993 INFO L495 AbstractCegarLoop]: Abstraction has 26294 states and 36369 transitions. [2022-07-21 05:41:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 26294 states and 36369 transitions. [2022-07-21 05:41:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:41:37,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:37,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:41:37,999 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash 954450183, now seen corresponding path program 1 times [2022-07-21 05:41:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:38,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161038386] [2022-07-21 05:41:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:38,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:38,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161038386] [2022-07-21 05:41:38,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161038386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:38,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:38,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410062847] [2022-07-21 05:41:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:38,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:38,031 INFO L87 Difference]: Start difference. First operand 26294 states and 36369 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:41,720 INFO L93 Difference]: Finished difference Result 53591 states and 73937 transitions. [2022-07-21 05:41:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:41,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-21 05:41:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:41,767 INFO L225 Difference]: With dead ends: 53591 [2022-07-21 05:41:41,768 INFO L226 Difference]: Without dead ends: 29492 [2022-07-21 05:41:41,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:41,794 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:41,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29492 states. [2022-07-21 05:41:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29492 to 26067. [2022-07-21 05:41:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26067 states, 26066 states have (on average 1.364881454768664) internal successors, (35577), 26066 states have internal predecessors, (35577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26067 states to 26067 states and 35577 transitions. [2022-07-21 05:41:44,703 INFO L78 Accepts]: Start accepts. Automaton has 26067 states and 35577 transitions. Word has length 62 [2022-07-21 05:41:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:44,703 INFO L495 AbstractCegarLoop]: Abstraction has 26067 states and 35577 transitions. [2022-07-21 05:41:44,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:44,704 INFO L276 IsEmpty]: Start isEmpty. Operand 26067 states and 35577 transitions. [2022-07-21 05:41:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:41:44,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:44,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:44,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:41:44,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -922232594, now seen corresponding path program 1 times [2022-07-21 05:41:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:44,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104121135] [2022-07-21 05:41:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:41:44,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:44,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104121135] [2022-07-21 05:41:44,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104121135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:44,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:44,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:41:44,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681234550] [2022-07-21 05:41:44,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:44,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:44,775 INFO L87 Difference]: Start difference. First operand 26067 states and 35577 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:49,151 INFO L93 Difference]: Finished difference Result 49877 states and 68699 transitions. [2022-07-21 05:41:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:41:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-21 05:41:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:49,237 INFO L225 Difference]: With dead ends: 49877 [2022-07-21 05:41:49,238 INFO L226 Difference]: Without dead ends: 42341 [2022-07-21 05:41:49,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:41:49,264 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 341 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:49,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 551 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:49,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42341 states. [2022-07-21 05:41:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42341 to 33261. [2022-07-21 05:41:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33261 states, 33260 states have (on average 1.3632591701743837) internal successors, (45342), 33260 states have internal predecessors, (45342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33261 states to 33261 states and 45342 transitions. [2022-07-21 05:41:52,910 INFO L78 Accepts]: Start accepts. Automaton has 33261 states and 45342 transitions. Word has length 62 [2022-07-21 05:41:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:52,910 INFO L495 AbstractCegarLoop]: Abstraction has 33261 states and 45342 transitions. [2022-07-21 05:41:52,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 33261 states and 45342 transitions. [2022-07-21 05:41:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:41:52,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:52,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:41:52,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:41:52,917 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2022-07-21 05:41:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:52,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536564697] [2022-07-21 05:41:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:41:52,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:52,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536564697] [2022-07-21 05:41:52,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536564697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:52,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:52,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:41:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860480914] [2022-07-21 05:41:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:52,965 INFO L87 Difference]: Start difference. First operand 33261 states and 45342 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:57,910 INFO L93 Difference]: Finished difference Result 57850 states and 79500 transitions. [2022-07-21 05:41:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:41:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 62 [2022-07-21 05:41:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:58,005 INFO L225 Difference]: With dead ends: 57850 [2022-07-21 05:41:58,005 INFO L226 Difference]: Without dead ends: 47596 [2022-07-21 05:41:58,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:41:58,031 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 335 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:58,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 590 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47596 states. [2022-07-21 05:42:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47596 to 41575. [2022-07-21 05:42:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41575 states, 41574 states have (on average 1.3585173425698753) internal successors, (56479), 41574 states have internal predecessors, (56479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41575 states to 41575 states and 56479 transitions. [2022-07-21 05:42:02,842 INFO L78 Accepts]: Start accepts. Automaton has 41575 states and 56479 transitions. Word has length 62 [2022-07-21 05:42:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:42:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 41575 states and 56479 transitions. [2022-07-21 05:42:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 41575 states and 56479 transitions. [2022-07-21 05:42:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:42:02,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:42:02,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:42:02,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:42:02,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:42:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:42:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash 901849755, now seen corresponding path program 1 times [2022-07-21 05:42:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:42:02,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477193248] [2022-07-21 05:42:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:42:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:42:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:42:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:42:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:42:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477193248] [2022-07-21 05:42:02,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477193248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:42:02,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:42:02,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:42:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198765150] [2022-07-21 05:42:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:42:02,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:42:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:42:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:42:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:42:02,872 INFO L87 Difference]: Start difference. First operand 41575 states and 56479 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:42:07,287 INFO L93 Difference]: Finished difference Result 80049 states and 108817 transitions. [2022-07-21 05:42:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:42:07,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 63 [2022-07-21 05:42:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:42:07,342 INFO L225 Difference]: With dead ends: 80049 [2022-07-21 05:42:07,343 INFO L226 Difference]: Without dead ends: 38531 [2022-07-21 05:42:07,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:42:07,378 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:42:07,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 126 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:42:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38531 states. [2022-07-21 05:42:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38531 to 37056. [2022-07-21 05:42:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37056 states, 37055 states have (on average 1.3416273107542842) internal successors, (49714), 37055 states have internal predecessors, (49714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37056 states to 37056 states and 49714 transitions. [2022-07-21 05:42:11,800 INFO L78 Accepts]: Start accepts. Automaton has 37056 states and 49714 transitions. Word has length 63 [2022-07-21 05:42:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:42:11,800 INFO L495 AbstractCegarLoop]: Abstraction has 37056 states and 49714 transitions. [2022-07-21 05:42:11,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37056 states and 49714 transitions. [2022-07-21 05:42:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:42:11,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:42:11,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:42:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:42:11,804 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:42:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:42:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -121604344, now seen corresponding path program 1 times [2022-07-21 05:42:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:42:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690648715] [2022-07-21 05:42:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:42:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:42:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:42:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:42:11,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:42:11,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690648715] [2022-07-21 05:42:11,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690648715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:42:11,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:42:11,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:42:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200942404] [2022-07-21 05:42:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:42:11,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:42:11,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:42:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:42:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:42:11,852 INFO L87 Difference]: Start difference. First operand 37056 states and 49714 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)