./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.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 c82e02bad63eada28ee405f8cd74dfaf9484d0aadaa27f27fe076fa722fdcdb7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:03:01,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:03:01,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:03:01,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:03:01,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:03:01,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:03:01,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:03:01,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:03:01,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:03:01,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:03:01,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:03:01,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:03:01,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:03:01,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:03:01,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:03:01,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:03:01,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:03:01,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:03:01,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:03:01,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:03:01,695 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:03:01,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:03:01,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:03:01,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:03:01,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:03:01,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:03:01,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:03:01,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:03:01,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:03:01,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:03:01,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:03:01,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:03:01,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:03:01,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:03:01,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:03:01,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:03:01,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:03:01,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:03:01,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:03:01,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:03:01,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:03:01,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:03:01,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:03:01,769 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:03:01,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:03:01,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:03:01,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:03:01,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:03:01,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:03:01,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:03:01,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:03:01,772 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:03:01,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:03:01,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:03:01,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:03:01,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:03:01,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:03:01,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:03:01,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:03:01,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:03:01,775 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:03:01,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:03:01,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:03:01,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:03:01,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:03:01,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:03:01,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:03:01,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:03:01,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:03:01,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:03:01,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:03:01,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:03:01,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:03:01,781 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:03:01,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:03:01,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:03:01,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c82e02bad63eada28ee405f8cd74dfaf9484d0aadaa27f27fe076fa722fdcdb7 [2022-07-22 18:03:02,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:03:02,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:03:02,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:03:02,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:03:02,054 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:03:02,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2022-07-22 18:03:02,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdc8f9ed/5d3f2224dd924623beab142a55dd1193/FLAG6ec422f2f [2022-07-22 18:03:02,656 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:03:02,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2022-07-22 18:03:02,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdc8f9ed/5d3f2224dd924623beab142a55dd1193/FLAG6ec422f2f [2022-07-22 18:03:02,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdc8f9ed/5d3f2224dd924623beab142a55dd1193 [2022-07-22 18:03:02,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:03:02,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:03:02,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:03:02,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:03:02,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:03:02,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfe28b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02, skipping insertion in model container [2022-07-22 18:03:02,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:03:03,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:03:03,221 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/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2022-07-22 18:03:03,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:03:03,237 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:03:03,300 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/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2022-07-22 18:03:03,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:03:03,329 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:03:03,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03 WrapperNode [2022-07-22 18:03:03,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:03:03,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:03:03,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:03:03,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:03:03,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,400 INFO L137 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 453 [2022-07-22 18:03:03,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:03:03,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:03:03,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:03:03,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:03:03,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:03:03,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:03:03,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:03:03,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:03:03,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (1/1) ... [2022-07-22 18:03:03,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:03:03,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:03:03,494 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) [2022-07-22 18:03:03,499 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 [2022-07-22 18:03:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:03:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:03:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:03:03,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:03:03,612 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:03:03,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:03:04,210 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:03:04,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:03:04,218 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:03:04,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:03:04 BoogieIcfgContainer [2022-07-22 18:03:04,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:03:04,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:03:04,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:03:04,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:03:04,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:03:02" (1/3) ... [2022-07-22 18:03:04,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb34e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:03:04, skipping insertion in model container [2022-07-22 18:03:04,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:03" (2/3) ... [2022-07-22 18:03:04,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb34e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:03:04, skipping insertion in model container [2022-07-22 18:03:04,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:03:04" (3/3) ... [2022-07-22 18:03:04,234 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2022-07-22 18:03:04,248 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:03:04,248 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:03:04,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:03:04,318 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@37bafccf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d463971 [2022-07-22 18:03:04,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:03:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 142 states have (on average 1.7183098591549295) internal successors, (244), 143 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 18:03:04,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:04,333 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] [2022-07-22 18:03:04,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1333844149, now seen corresponding path program 1 times [2022-07-22 18:03:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:04,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152777818] [2022-07-22 18:03:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152777818] [2022-07-22 18:03:04,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152777818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:04,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:04,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:03:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243028238] [2022-07-22 18:03:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:03:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:04,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:03:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:03:04,681 INFO L87 Difference]: Start difference. First operand has 144 states, 142 states have (on average 1.7183098591549295) internal successors, (244), 143 states have internal predecessors, (244), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2022-07-22 18:03:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:04,813 INFO L93 Difference]: Finished difference Result 241 states and 401 transitions. [2022-07-22 18:03:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:03:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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 [2022-07-22 18:03:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:04,829 INFO L225 Difference]: With dead ends: 241 [2022-07-22 18:03:04,831 INFO L226 Difference]: Without dead ends: 140 [2022-07-22 18:03:04,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:03:04,838 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 3 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:04,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 896 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-22 18:03:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-22 18:03:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2022-07-22 18:03:04,886 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 37 [2022-07-22 18:03:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:04,886 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 196 transitions. [2022-07-22 18:03:04,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2022-07-22 18:03:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 196 transitions. [2022-07-22 18:03:04,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 18:03:04,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:04,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:03:04,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash -976812523, now seen corresponding path program 1 times [2022-07-22 18:03:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:04,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719144714] [2022-07-22 18:03:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719144714] [2022-07-22 18:03:05,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719144714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486215618] [2022-07-22 18:03:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,095 INFO L87 Difference]: Start difference. First operand 140 states and 196 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,134 INFO L93 Difference]: Finished difference Result 314 states and 474 transitions. [2022-07-22 18:03:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-22 18:03:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,138 INFO L225 Difference]: With dead ends: 314 [2022-07-22 18:03:05,140 INFO L226 Difference]: Without dead ends: 221 [2022-07-22 18:03:05,141 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 [2022-07-22 18:03:05,142 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 133 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 444 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 [2022-07-22 18:03:05,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-22 18:03:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2022-07-22 18:03:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.481651376146789) internal successors, (323), 218 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 323 transitions. [2022-07-22 18:03:05,182 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 323 transitions. Word has length 77 [2022-07-22 18:03:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,183 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 323 transitions. [2022-07-22 18:03:05,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 323 transitions. [2022-07-22 18:03:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:03:05,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:05,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:03:05,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1251497554, now seen corresponding path program 1 times [2022-07-22 18:03:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204966416] [2022-07-22 18:03:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204966416] [2022-07-22 18:03:05,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204966416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91696764] [2022-07-22 18:03:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,336 INFO L87 Difference]: Start difference. First operand 219 states and 323 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,379 INFO L93 Difference]: Finished difference Result 539 states and 835 transitions. [2022-07-22 18:03:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-07-22 18:03:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,385 INFO L225 Difference]: With dead ends: 539 [2022-07-22 18:03:05,385 INFO L226 Difference]: Without dead ends: 367 [2022-07-22 18:03:05,388 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 [2022-07-22 18:03:05,393 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 128 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 435 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 [2022-07-22 18:03:05,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 435 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-07-22 18:03:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-07-22 18:03:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5274725274725274) internal successors, (556), 364 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 556 transitions. [2022-07-22 18:03:05,430 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 556 transitions. Word has length 78 [2022-07-22 18:03:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,432 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 556 transitions. [2022-07-22 18:03:05,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 556 transitions. [2022-07-22 18:03:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 18:03:05,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:05,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:03:05,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2103523781, now seen corresponding path program 1 times [2022-07-22 18:03:05,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903111206] [2022-07-22 18:03:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903111206] [2022-07-22 18:03:05,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903111206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885808457] [2022-07-22 18:03:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,567 INFO L87 Difference]: Start difference. First operand 365 states and 556 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,595 INFO L93 Difference]: Finished difference Result 953 states and 1494 transitions. [2022-07-22 18:03:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-22 18:03:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,599 INFO L225 Difference]: With dead ends: 953 [2022-07-22 18:03:05,599 INFO L226 Difference]: Without dead ends: 635 [2022-07-22 18:03:05,601 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 [2022-07-22 18:03:05,602 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 123 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 426 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 [2022-07-22 18:03:05,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 426 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-07-22 18:03:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2022-07-22 18:03:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 1.5506329113924051) internal successors, (980), 632 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 980 transitions. [2022-07-22 18:03:05,648 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 980 transitions. Word has length 79 [2022-07-22 18:03:05,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,650 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 980 transitions. [2022-07-22 18:03:05,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 980 transitions. [2022-07-22 18:03:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 18:03:05,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:03:05,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash -508152546, now seen corresponding path program 1 times [2022-07-22 18:03:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125116210] [2022-07-22 18:03:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125116210] [2022-07-22 18:03:05,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125116210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343308113] [2022-07-22 18:03:05,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,743 INFO L87 Difference]: Start difference. First operand 633 states and 980 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,786 INFO L93 Difference]: Finished difference Result 1709 states and 2686 transitions. [2022-07-22 18:03:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-22 18:03:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,794 INFO L225 Difference]: With dead ends: 1709 [2022-07-22 18:03:05,795 INFO L226 Difference]: Without dead ends: 1123 [2022-07-22 18:03:05,797 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 [2022-07-22 18:03:05,797 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 118 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 417 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 [2022-07-22 18:03:05,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 417 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-07-22 18:03:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2022-07-22 18:03:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 1.5571428571428572) internal successors, (1744), 1120 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1744 transitions. [2022-07-22 18:03:05,841 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1744 transitions. Word has length 80 [2022-07-22 18:03:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,843 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1744 transitions. [2022-07-22 18:03:05,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1744 transitions. [2022-07-22 18:03:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 18:03:05,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:05,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:03:05,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1230501237, now seen corresponding path program 1 times [2022-07-22 18:03:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236341059] [2022-07-22 18:03:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236341059] [2022-07-22 18:03:05,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236341059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927114507] [2022-07-22 18:03:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,934 INFO L87 Difference]: Start difference. First operand 1121 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:06,002 INFO L93 Difference]: Finished difference Result 3077 states and 4818 transitions. [2022-07-22 18:03:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-22 18:03:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:06,013 INFO L225 Difference]: With dead ends: 3077 [2022-07-22 18:03:06,013 INFO L226 Difference]: Without dead ends: 2003 [2022-07-22 18:03:06,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:06,017 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 113 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 408 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 [2022-07-22 18:03:06,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 408 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-07-22 18:03:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2022-07-22 18:03:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.552) internal successors, (3104), 2000 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3104 transitions. [2022-07-22 18:03:06,102 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3104 transitions. Word has length 81 [2022-07-22 18:03:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:06,103 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 3104 transitions. [2022-07-22 18:03:06,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3104 transitions. [2022-07-22 18:03:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-22 18:03:06,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:06,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:03:06,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash -937142130, now seen corresponding path program 1 times [2022-07-22 18:03:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:06,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975295071] [2022-07-22 18:03:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:06,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:06,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:06,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975295071] [2022-07-22 18:03:06,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975295071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:06,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:06,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:03:06,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489369996] [2022-07-22 18:03:06,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:06,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:03:06,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:03:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:06,228 INFO L87 Difference]: Start difference. First operand 2001 states and 3104 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:06,881 INFO L93 Difference]: Finished difference Result 15679 states and 24503 transitions. [2022-07-22 18:03:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:03:06,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-07-22 18:03:06,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:06,941 INFO L225 Difference]: With dead ends: 15679 [2022-07-22 18:03:06,942 INFO L226 Difference]: Without dead ends: 13725 [2022-07-22 18:03:06,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:03:06,951 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1747 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:06,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2936 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13725 states. [2022-07-22 18:03:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13725 to 3953. [2022-07-22 18:03:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 1.54251012145749) internal successors, (6096), 3952 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:07,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 6096 transitions. [2022-07-22 18:03:07,319 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 6096 transitions. Word has length 82 [2022-07-22 18:03:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:07,319 INFO L495 AbstractCegarLoop]: Abstraction has 3953 states and 6096 transitions. [2022-07-22 18:03:07,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 6096 transitions. [2022-07-22 18:03:07,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 18:03:07,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:07,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:07,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:03:07,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash 630041935, now seen corresponding path program 1 times [2022-07-22 18:03:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:07,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088793586] [2022-07-22 18:03:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:07,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088793586] [2022-07-22 18:03:07,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088793586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:07,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:07,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:03:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749832056] [2022-07-22 18:03:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:07,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:03:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:03:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:07,503 INFO L87 Difference]: Start difference. First operand 3953 states and 6096 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:08,934 INFO L93 Difference]: Finished difference Result 24989 states and 38230 transitions. [2022-07-22 18:03:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:03:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-07-22 18:03:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:09,016 INFO L225 Difference]: With dead ends: 24989 [2022-07-22 18:03:09,016 INFO L226 Difference]: Without dead ends: 21083 [2022-07-22 18:03:09,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:09,030 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 881 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:09,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1156 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2022-07-22 18:03:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 21073. [2022-07-22 18:03:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21073 states, 21072 states have (on average 1.5239179954441913) internal successors, (32112), 21072 states have internal predecessors, (32112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21073 states to 21073 states and 32112 transitions. [2022-07-22 18:03:10,630 INFO L78 Accepts]: Start accepts. Automaton has 21073 states and 32112 transitions. Word has length 83 [2022-07-22 18:03:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:10,630 INFO L495 AbstractCegarLoop]: Abstraction has 21073 states and 32112 transitions. [2022-07-22 18:03:10,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 21073 states and 32112 transitions. [2022-07-22 18:03:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 18:03:10,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:10,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:10,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:03:10,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1487130877, now seen corresponding path program 1 times [2022-07-22 18:03:10,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:10,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913570375] [2022-07-22 18:03:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:10,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913570375] [2022-07-22 18:03:10,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913570375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:10,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:10,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:03:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926800747] [2022-07-22 18:03:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:03:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:03:10,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:03:10,727 INFO L87 Difference]: Start difference. First operand 21073 states and 32112 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:12,880 INFO L93 Difference]: Finished difference Result 43635 states and 65713 transitions. [2022-07-22 18:03:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:03:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-22 18:03:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:13,005 INFO L225 Difference]: With dead ends: 43635 [2022-07-22 18:03:13,006 INFO L226 Difference]: Without dead ends: 43633 [2022-07-22 18:03:13,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:13,027 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 426 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 870 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43633 states. [2022-07-22 18:03:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43633 to 22225. [2022-07-22 18:03:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22225 states, 22224 states have (on average 1.4967602591792657) internal successors, (33264), 22224 states have internal predecessors, (33264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 33264 transitions. [2022-07-22 18:03:14,393 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 33264 transitions. Word has length 84 [2022-07-22 18:03:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:14,393 INFO L495 AbstractCegarLoop]: Abstraction has 22225 states and 33264 transitions. [2022-07-22 18:03:14,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 33264 transitions. [2022-07-22 18:03:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-22 18:03:14,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:14,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:14,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:03:14,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1091004264, now seen corresponding path program 1 times [2022-07-22 18:03:14,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:14,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624603175] [2022-07-22 18:03:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:14,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:14,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:14,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624603175] [2022-07-22 18:03:14,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624603175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:14,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:14,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393984199] [2022-07-22 18:03:14,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:14,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:14,438 INFO L87 Difference]: Start difference. First operand 22225 states and 33264 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:16,345 INFO L93 Difference]: Finished difference Result 62165 states and 92658 transitions. [2022-07-22 18:03:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:16,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-22 18:03:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:16,426 INFO L225 Difference]: With dead ends: 62165 [2022-07-22 18:03:16,427 INFO L226 Difference]: Without dead ends: 39987 [2022-07-22 18:03:16,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:16,464 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 103 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:16,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 340 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39987 states. [2022-07-22 18:03:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39987 to 39633. [2022-07-22 18:03:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39633 states, 39632 states have (on average 1.4731530076705692) internal successors, (58384), 39632 states have internal predecessors, (58384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39633 states to 39633 states and 58384 transitions. [2022-07-22 18:03:19,012 INFO L78 Accepts]: Start accepts. Automaton has 39633 states and 58384 transitions. Word has length 85 [2022-07-22 18:03:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:19,013 INFO L495 AbstractCegarLoop]: Abstraction has 39633 states and 58384 transitions. [2022-07-22 18:03:19,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 39633 states and 58384 transitions. [2022-07-22 18:03:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 18:03:19,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:19,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:03:19,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1624392677, now seen corresponding path program 1 times [2022-07-22 18:03:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914869500] [2022-07-22 18:03:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:19,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:19,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914869500] [2022-07-22 18:03:19,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914869500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:19,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:19,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684162607] [2022-07-22 18:03:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:19,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:19,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:19,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:19,067 INFO L87 Difference]: Start difference. First operand 39633 states and 58384 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:22,294 INFO L93 Difference]: Finished difference Result 79768 states and 117910 transitions. [2022-07-22 18:03:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:22,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-07-22 18:03:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:22,405 INFO L225 Difference]: With dead ends: 79768 [2022-07-22 18:03:22,405 INFO L226 Difference]: Without dead ends: 57589 [2022-07-22 18:03:22,445 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 [2022-07-22 18:03:22,446 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 134 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 465 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 [2022-07-22 18:03:22,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:22,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57589 states. [2022-07-22 18:03:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57589 to 57587. [2022-07-22 18:03:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57587 states, 57586 states have (on average 1.4640016670718576) internal successors, (84306), 57586 states have internal predecessors, (84306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57587 states to 57587 states and 84306 transitions. [2022-07-22 18:03:26,004 INFO L78 Accepts]: Start accepts. Automaton has 57587 states and 84306 transitions. Word has length 86 [2022-07-22 18:03:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:26,004 INFO L495 AbstractCegarLoop]: Abstraction has 57587 states and 84306 transitions. [2022-07-22 18:03:26,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 57587 states and 84306 transitions. [2022-07-22 18:03:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 18:03:26,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:26,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:26,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:03:26,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2050835095, now seen corresponding path program 1 times [2022-07-22 18:03:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:26,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786341457] [2022-07-22 18:03:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 18:03:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:26,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786341457] [2022-07-22 18:03:26,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786341457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:26,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:26,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:03:26,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611076523] [2022-07-22 18:03:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:03:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:03:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:26,132 INFO L87 Difference]: Start difference. First operand 57587 states and 84306 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:33,384 INFO L93 Difference]: Finished difference Result 151601 states and 224249 transitions. [2022-07-22 18:03:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:03:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 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 117 [2022-07-22 18:03:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:33,617 INFO L225 Difference]: With dead ends: 151601 [2022-07-22 18:03:33,617 INFO L226 Difference]: Without dead ends: 126399 [2022-07-22 18:03:33,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:03:33,651 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1521 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:33,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2249 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126399 states. [2022-07-22 18:03:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126399 to 80787. [2022-07-22 18:03:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80787 states, 80786 states have (on average 1.4650310697398063) internal successors, (118354), 80786 states have internal predecessors, (118354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80787 states to 80787 states and 118354 transitions. [2022-07-22 18:03:39,328 INFO L78 Accepts]: Start accepts. Automaton has 80787 states and 118354 transitions. Word has length 117 [2022-07-22 18:03:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 80787 states and 118354 transitions. [2022-07-22 18:03:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 80787 states and 118354 transitions. [2022-07-22 18:03:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 18:03:39,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:39,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:03:39,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:39,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1501711577, now seen corresponding path program 1 times [2022-07-22 18:03:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843439144] [2022-07-22 18:03:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:39,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:39,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:39,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843439144] [2022-07-22 18:03:39,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843439144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:39,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:39,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212239285] [2022-07-22 18:03:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:39,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:39,404 INFO L87 Difference]: Start difference. First operand 80787 states and 118354 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)