./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label38.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 cf45ccd02a611bb9297bfb1cd355a12d9c6a10c7fde3ac90ab820bcc5d1ae5fb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 00:33:15,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 00:33:15,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 00:33:15,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 00:33:15,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 00:33:15,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 00:33:15,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 00:33:15,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 00:33:15,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 00:33:15,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 00:33:15,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 00:33:15,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 00:33:15,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 00:33:15,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 00:33:15,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 00:33:15,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 00:33:15,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 00:33:15,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 00:33:15,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 00:33:15,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 00:33:15,633 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 00:33:15,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 00:33:15,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 00:33:15,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 00:33:15,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 00:33:15,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 00:33:15,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 00:33:15,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 00:33:15,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 00:33:15,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 00:33:15,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 00:33:15,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 00:33:15,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 00:33:15,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 00:33:15,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 00:33:15,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 00:33:15,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 00:33:15,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 00:33:15,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 00:33:15,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 00:33:15,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 00:33:15,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 00:33:15,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 00:33:15,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 00:33:15,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 00:33:15,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 00:33:15,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 00:33:15,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 00:33:15,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 00:33:15,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 00:33:15,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 00:33:15,678 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 00:33:15,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 00:33:15,679 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 00:33:15,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 00:33:15,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 00:33:15,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 00:33:15,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 00:33:15,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 00:33:15,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 00:33:15,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 00:33:15,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 00:33:15,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 00:33:15,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 00:33:15,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 00:33:15,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 00:33:15,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 00:33:15,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:33:15,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 00:33:15,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 00:33:15,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 00:33:15,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 00:33:15,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 00:33:15,686 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 00:33:15,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 00:33:15,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 00:33:15,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf45ccd02a611bb9297bfb1cd355a12d9c6a10c7fde3ac90ab820bcc5d1ae5fb [2022-07-21 00:33:15,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 00:33:15,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 00:33:15,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 00:33:15,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 00:33:15,961 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 00:33:15,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label38.c [2022-07-21 00:33:16,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a5b7f78/56404a59646d4e31905369521d0655f4/FLAGf236837b2 [2022-07-21 00:33:16,831 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 00:33:16,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label38.c [2022-07-21 00:33:16,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a5b7f78/56404a59646d4e31905369521d0655f4/FLAGf236837b2 [2022-07-21 00:33:17,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a5b7f78/56404a59646d4e31905369521d0655f4 [2022-07-21 00:33:17,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 00:33:17,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 00:33:17,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 00:33:17,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 00:33:17,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 00:33:17,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:33:17" (1/1) ... [2022-07-21 00:33:17,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126b62a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:17, skipping insertion in model container [2022-07-21 00:33:17,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:33:17" (1/1) ... [2022-07-21 00:33:17,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 00:33:17,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 00:33:17,722 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/eca-rers2012/Problem19_label38.c[7658,7671] [2022-07-21 00:33:18,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:33:18,534 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 00:33:18,552 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/eca-rers2012/Problem19_label38.c[7658,7671] [2022-07-21 00:33:19,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:33:19,131 INFO L208 MainTranslator]: Completed translation [2022-07-21 00:33:19,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19 WrapperNode [2022-07-21 00:33:19,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 00:33:19,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 00:33:19,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 00:33:19,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 00:33:19,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:19,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:19,915 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-21 00:33:19,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 00:33:19,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 00:33:19,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 00:33:19,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 00:33:19,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:19,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 00:33:20,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 00:33:20,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 00:33:20,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 00:33:20,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (1/1) ... [2022-07-21 00:33:20,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:33:20,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:33:20,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 00:33:20,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 00:33:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 00:33:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 00:33:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 00:33:20,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 00:33:20,860 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 00:33:20,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 00:33:26,198 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 00:33:26,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 00:33:26,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 00:33:26,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:33:26 BoogieIcfgContainer [2022-07-21 00:33:26,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 00:33:26,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 00:33:26,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 00:33:26,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 00:33:26,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:33:17" (1/3) ... [2022-07-21 00:33:26,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1606d302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:33:26, skipping insertion in model container [2022-07-21 00:33:26,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:19" (2/3) ... [2022-07-21 00:33:26,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1606d302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:33:26, skipping insertion in model container [2022-07-21 00:33:26,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:33:26" (3/3) ... [2022-07-21 00:33:26,269 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label38.c [2022-07-21 00:33:26,289 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 00:33:26,290 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 00:33:26,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 00:33:26,419 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@7f4aac6b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7814dbed [2022-07-21 00:33:26,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 00:33:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 00:33:26,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:26,439 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] [2022-07-21 00:33:26,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2022-07-21 00:33:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:26,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903929480] [2022-07-21 00:33:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:33:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:26,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903929480] [2022-07-21 00:33:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903929480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:26,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:26,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:33:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028782351] [2022-07-21 00:33:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:26,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:33:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:33:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:26,727 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:36,703 INFO L93 Difference]: Finished difference Result 6288 states and 12045 transitions. [2022-07-21 00:33:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:33:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-21 00:33:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:36,740 INFO L225 Difference]: With dead ends: 6288 [2022-07-21 00:33:36,740 INFO L226 Difference]: Without dead ends: 4471 [2022-07-21 00:33:36,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:33:36,753 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 4564 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 3651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 10775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3651 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:36,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 1011 Invalid, 10775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3651 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-21 00:33:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-07-21 00:33:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4467. [2022-07-21 00:33:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5665024630541873) internal successors, (6996), 4466 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6996 transitions. [2022-07-21 00:33:36,888 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6996 transitions. Word has length 59 [2022-07-21 00:33:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:36,890 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6996 transitions. [2022-07-21 00:33:36,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6996 transitions. [2022-07-21 00:33:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-07-21 00:33:36,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:36,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:36,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 00:33:36,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:36,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1753488486, now seen corresponding path program 1 times [2022-07-21 00:33:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:36,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910233498] [2022-07-21 00:33:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 00:33:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:37,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910233498] [2022-07-21 00:33:37,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910233498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:37,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:37,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:33:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100830314] [2022-07-21 00:33:37,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:37,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:33:37,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:33:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:37,200 INFO L87 Difference]: Start difference. First operand 4467 states and 6996 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:46,319 INFO L93 Difference]: Finished difference Result 11710 states and 20221 transitions. [2022-07-21 00:33:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:33:46,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 333 [2022-07-21 00:33:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:46,342 INFO L225 Difference]: With dead ends: 11710 [2022-07-21 00:33:46,342 INFO L226 Difference]: Without dead ends: 8610 [2022-07-21 00:33:46,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:33:46,346 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9445 mSolverCounterSat, 1332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 10777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1332 IncrementalHoareTripleChecker+Valid, 9445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:46,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2155 Invalid, 10777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1332 Valid, 9445 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-21 00:33:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-07-21 00:33:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8596. [2022-07-21 00:33:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.348458406050029) internal successors, (11590), 8595 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11590 transitions. [2022-07-21 00:33:46,460 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11590 transitions. Word has length 333 [2022-07-21 00:33:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:46,462 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11590 transitions. [2022-07-21 00:33:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11590 transitions. [2022-07-21 00:33:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-21 00:33:46,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:46,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:46,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 00:33:46,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash 846152308, now seen corresponding path program 1 times [2022-07-21 00:33:46,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:46,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002010579] [2022-07-21 00:33:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:46,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 00:33:46,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:46,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002010579] [2022-07-21 00:33:46,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002010579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:46,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:46,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:33:46,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2514813] [2022-07-21 00:33:46,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:46,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:33:46,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:46,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:33:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:46,708 INFO L87 Difference]: Start difference. First operand 8596 states and 11590 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:53,281 INFO L93 Difference]: Finished difference Result 14491 states and 20461 transitions. [2022-07-21 00:33:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:33:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 361 [2022-07-21 00:33:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:53,303 INFO L225 Difference]: With dead ends: 14491 [2022-07-21 00:33:53,303 INFO L226 Difference]: Without dead ends: 8596 [2022-07-21 00:33:53,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:53,312 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:53,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2115 Invalid, 7329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7321 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 00:33:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-07-21 00:33:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8596. [2022-07-21 00:33:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.3469458987783596) internal successors, (11577), 8595 states have internal predecessors, (11577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11577 transitions. [2022-07-21 00:33:53,425 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11577 transitions. Word has length 361 [2022-07-21 00:33:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:53,426 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11577 transitions. [2022-07-21 00:33:53,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11577 transitions. [2022-07-21 00:33:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-07-21 00:33:53,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:53,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 00:33:53,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1291493549, now seen corresponding path program 1 times [2022-07-21 00:33:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:53,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959082917] [2022-07-21 00:33:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 135 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:33:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:53,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959082917] [2022-07-21 00:33:53,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959082917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:33:53,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296128718] [2022-07-21 00:33:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:33:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:33:53,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:33:53,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 00:33:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:54,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:33:54,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:33:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:33:54,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:33:54,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296128718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:54,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:33:54,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-21 00:33:54,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059599720] [2022-07-21 00:33:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:54,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:33:54,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:54,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:33:54,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 00:33:54,152 INFO L87 Difference]: Start difference. First operand 8596 states and 11577 transitions. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:58,621 INFO L93 Difference]: Finished difference Result 19935 states and 28708 transitions. [2022-07-21 00:33:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:33:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 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 613 [2022-07-21 00:33:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:58,677 INFO L225 Difference]: With dead ends: 19935 [2022-07-21 00:33:58,677 INFO L226 Difference]: Without dead ends: 14071 [2022-07-21 00:33:58,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 00:33:58,692 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1730 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:58,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1508 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 00:33:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2022-07-21 00:33:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 14071. [2022-07-21 00:33:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14071 states, 14070 states have (on average 1.2694385216773276) internal successors, (17861), 14070 states have internal predecessors, (17861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14071 states to 14071 states and 17861 transitions. [2022-07-21 00:33:58,850 INFO L78 Accepts]: Start accepts. Automaton has 14071 states and 17861 transitions. Word has length 613 [2022-07-21 00:33:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:58,851 INFO L495 AbstractCegarLoop]: Abstraction has 14071 states and 17861 transitions. [2022-07-21 00:33:58,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14071 states and 17861 transitions. [2022-07-21 00:33:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-07-21 00:33:58,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:58,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:58,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 00:33:59,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:33:59,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash 960242003, now seen corresponding path program 1 times [2022-07-21 00:33:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:59,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524804238] [2022-07-21 00:33:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-21 00:33:59,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:59,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524804238] [2022-07-21 00:33:59,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524804238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:59,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:59,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:33:59,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540217639] [2022-07-21 00:33:59,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:59,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:33:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:33:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:33:59,292 INFO L87 Difference]: Start difference. First operand 14071 states and 17861 transitions. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:05,221 INFO L93 Difference]: Finished difference Result 36504 states and 47794 transitions. [2022-07-21 00:34:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:05,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 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 614 [2022-07-21 00:34:05,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:05,277 INFO L225 Difference]: With dead ends: 36504 [2022-07-21 00:34:05,278 INFO L226 Difference]: Without dead ends: 25165 [2022-07-21 00:34:05,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:05,294 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2110 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:05,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 964 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-21 00:34:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25165 states. [2022-07-21 00:34:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25165 to 23797. [2022-07-21 00:34:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23797 states, 23796 states have (on average 1.2674399058665322) internal successors, (30160), 23796 states have internal predecessors, (30160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23797 states to 23797 states and 30160 transitions. [2022-07-21 00:34:05,755 INFO L78 Accepts]: Start accepts. Automaton has 23797 states and 30160 transitions. Word has length 614 [2022-07-21 00:34:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:05,756 INFO L495 AbstractCegarLoop]: Abstraction has 23797 states and 30160 transitions. [2022-07-21 00:34:05,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 23797 states and 30160 transitions. [2022-07-21 00:34:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-07-21 00:34:05,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:05,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:05,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 00:34:05,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1301081191, now seen corresponding path program 1 times [2022-07-21 00:34:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:05,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732654371] [2022-07-21 00:34:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 00:34:06,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:06,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732654371] [2022-07-21 00:34:06,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732654371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:06,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:06,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:34:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31926657] [2022-07-21 00:34:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:06,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:06,018 INFO L87 Difference]: Start difference. First operand 23797 states and 30160 transitions. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:11,179 INFO L93 Difference]: Finished difference Result 50347 states and 65462 transitions. [2022-07-21 00:34:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:11,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 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 631 [2022-07-21 00:34:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:11,223 INFO L225 Difference]: With dead ends: 50347 [2022-07-21 00:34:11,223 INFO L226 Difference]: Without dead ends: 29282 [2022-07-21 00:34:11,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:11,247 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1377 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 723 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2125 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-21 00:34:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-07-21 00:34:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 29267. [2022-07-21 00:34:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29267 states, 29266 states have (on average 1.2553133328777422) internal successors, (36738), 29266 states have internal predecessors, (36738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 36738 transitions. [2022-07-21 00:34:11,585 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 36738 transitions. Word has length 631 [2022-07-21 00:34:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:11,586 INFO L495 AbstractCegarLoop]: Abstraction has 29267 states and 36738 transitions. [2022-07-21 00:34:11,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 36738 transitions. [2022-07-21 00:34:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2022-07-21 00:34:11,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:11,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:11,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 00:34:11,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash 854602610, now seen corresponding path program 1 times [2022-07-21 00:34:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:11,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418722944] [2022-07-21 00:34:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:11,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 00:34:11,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:11,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418722944] [2022-07-21 00:34:11,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418722944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:11,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:11,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 00:34:11,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126909218] [2022-07-21 00:34:11,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:11,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:34:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:34:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:34:11,871 INFO L87 Difference]: Start difference. First operand 29267 states and 36738 transitions. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:21,057 INFO L93 Difference]: Finished difference Result 98282 states and 126943 transitions. [2022-07-21 00:34:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:34:21,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 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 843 [2022-07-21 00:34:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:21,174 INFO L225 Difference]: With dead ends: 98282 [2022-07-21 00:34:21,174 INFO L226 Difference]: Without dead ends: 71747 [2022-07-21 00:34:21,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:34:21,197 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 3380 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8462 mSolverCounterSat, 3305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 11767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3305 IncrementalHoareTripleChecker+Valid, 8462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:21,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3380 Valid, 1082 Invalid, 11767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3305 Valid, 8462 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-21 00:34:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71747 states. [2022-07-21 00:34:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71747 to 68933. [2022-07-21 00:34:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68933 states, 68932 states have (on average 1.223118435559682) internal successors, (84312), 68932 states have internal predecessors, (84312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68933 states to 68933 states and 84312 transitions. [2022-07-21 00:34:21,842 INFO L78 Accepts]: Start accepts. Automaton has 68933 states and 84312 transitions. Word has length 843 [2022-07-21 00:34:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:21,842 INFO L495 AbstractCegarLoop]: Abstraction has 68933 states and 84312 transitions. [2022-07-21 00:34:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 68933 states and 84312 transitions. [2022-07-21 00:34:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2022-07-21 00:34:21,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:21,853 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:21,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 00:34:21,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -506930508, now seen corresponding path program 1 times [2022-07-21 00:34:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:21,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575130117] [2022-07-21 00:34:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:21,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 244 proven. 422 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 00:34:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575130117] [2022-07-21 00:34:22,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575130117] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:34:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692361069] [2022-07-21 00:34:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:22,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:34:22,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:34:22,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:34:22,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 00:34:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:22,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:34:22,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:34:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-21 00:34:22,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:34:22,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692361069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:22,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:34:22,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-21 00:34:22,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364818813] [2022-07-21 00:34:22,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:22,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:22,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:22,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:34:22,579 INFO L87 Difference]: Start difference. First operand 68933 states and 84312 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:28,326 INFO L93 Difference]: Finished difference Result 195307 states and 241058 transitions. [2022-07-21 00:34:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:28,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 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 919 [2022-07-21 00:34:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:28,493 INFO L225 Difference]: With dead ends: 195307 [2022-07-21 00:34:28,493 INFO L226 Difference]: Without dead ends: 129106 [2022-07-21 00:34:28,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:34:28,550 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 1544 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 1893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1893 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:28,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1231 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1893 Valid, 4157 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-21 00:34:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129106 states. [2022-07-21 00:34:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129106 to 127650. [2022-07-21 00:34:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127650 states, 127649 states have (on average 1.1978315537136992) internal successors, (152902), 127649 states have internal predecessors, (152902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127650 states to 127650 states and 152902 transitions. [2022-07-21 00:34:30,251 INFO L78 Accepts]: Start accepts. Automaton has 127650 states and 152902 transitions. Word has length 919 [2022-07-21 00:34:30,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:30,252 INFO L495 AbstractCegarLoop]: Abstraction has 127650 states and 152902 transitions. [2022-07-21 00:34:30,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 127650 states and 152902 transitions. [2022-07-21 00:34:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2022-07-21 00:34:30,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:30,266 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:30,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 00:34:30,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 00:34:30,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:30,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1338702149, now seen corresponding path program 1 times [2022-07-21 00:34:30,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:30,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681487295] [2022-07-21 00:34:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:30,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 688 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-21 00:34:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:31,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681487295] [2022-07-21 00:34:31,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681487295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:31,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:31,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:34:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817788271] [2022-07-21 00:34:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:31,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:31,278 INFO L87 Difference]: Start difference. First operand 127650 states and 152902 transitions. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:36,517 INFO L93 Difference]: Finished difference Result 260755 states and 311441 transitions. [2022-07-21 00:34:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:36,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 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 1042 [2022-07-21 00:34:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:36,691 INFO L225 Difference]: With dead ends: 260755 [2022-07-21 00:34:36,691 INFO L226 Difference]: Without dead ends: 126280 [2022-07-21 00:34:36,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:36,916 INFO L413 NwaCegarLoop]: 2882 mSDtfsCounter, 1354 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4328 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 5283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 4328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:36,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 3059 Invalid, 5283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 4328 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-21 00:34:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126280 states. [2022-07-21 00:34:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126280 to 126265. [2022-07-21 00:34:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126265 states, 126264 states have (on average 1.141687258442628) internal successors, (144154), 126264 states have internal predecessors, (144154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126265 states to 126265 states and 144154 transitions. [2022-07-21 00:34:38,573 INFO L78 Accepts]: Start accepts. Automaton has 126265 states and 144154 transitions. Word has length 1042 [2022-07-21 00:34:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:38,574 INFO L495 AbstractCegarLoop]: Abstraction has 126265 states and 144154 transitions. [2022-07-21 00:34:38,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 126265 states and 144154 transitions. [2022-07-21 00:34:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2022-07-21 00:34:38,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:38,591 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:38,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 00:34:38,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash 547744038, now seen corresponding path program 1 times [2022-07-21 00:34:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:38,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193025574] [2022-07-21 00:34:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 1153 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-07-21 00:34:39,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:39,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193025574] [2022-07-21 00:34:39,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193025574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:39,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:39,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:34:39,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934255353] [2022-07-21 00:34:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:39,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:39,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:39,162 INFO L87 Difference]: Start difference. First operand 126265 states and 144154 transitions. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:45,543 INFO L93 Difference]: Finished difference Result 308590 states and 354826 transitions. [2022-07-21 00:34:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:45,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 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 1140 [2022-07-21 00:34:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:45,776 INFO L225 Difference]: With dead ends: 308590 [2022-07-21 00:34:45,777 INFO L226 Difference]: Without dead ends: 183692 [2022-07-21 00:34:46,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:46,001 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1575 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4206 mSolverCounterSat, 2233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 6439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2233 IncrementalHoareTripleChecker+Valid, 4206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 636 Invalid, 6439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2233 Valid, 4206 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 00:34:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183692 states. [2022-07-21 00:34:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183692 to 167213. [2022-07-21 00:34:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167213 states, 167212 states have (on average 1.1611846039757912) internal successors, (194164), 167212 states have internal predecessors, (194164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167213 states to 167213 states and 194164 transitions. [2022-07-21 00:34:48,054 INFO L78 Accepts]: Start accepts. Automaton has 167213 states and 194164 transitions. Word has length 1140 [2022-07-21 00:34:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:48,055 INFO L495 AbstractCegarLoop]: Abstraction has 167213 states and 194164 transitions. [2022-07-21 00:34:48,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 167213 states and 194164 transitions. [2022-07-21 00:34:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2022-07-21 00:34:48,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:48,081 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:48,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 00:34:48,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -578003773, now seen corresponding path program 1 times [2022-07-21 00:34:48,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:48,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266017923] [2022-07-21 00:34:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:48,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-07-21 00:34:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:48,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266017923] [2022-07-21 00:34:48,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266017923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:48,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:48,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:34:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122414994] [2022-07-21 00:34:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:48,825 INFO L87 Difference]: Start difference. First operand 167213 states and 194164 transitions. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:54,985 INFO L93 Difference]: Finished difference Result 331699 states and 385602 transitions. [2022-07-21 00:34:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:54,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 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 1266 [2022-07-21 00:34:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:55,355 INFO L225 Difference]: With dead ends: 331699 [2022-07-21 00:34:55,355 INFO L226 Difference]: Without dead ends: 167218 [2022-07-21 00:34:55,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:55,415 INFO L413 NwaCegarLoop]: 2822 mSDtfsCounter, 1214 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4377 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 4377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:55,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 3005 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 4377 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-21 00:34:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167218 states. [2022-07-21 00:34:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167218 to 167208. [2022-07-21 00:34:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167208 states, 167207 states have (on average 1.1078184525767463) internal successors, (185235), 167207 states have internal predecessors, (185235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167208 states to 167208 states and 185235 transitions. [2022-07-21 00:34:57,063 INFO L78 Accepts]: Start accepts. Automaton has 167208 states and 185235 transitions. Word has length 1266 [2022-07-21 00:34:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:57,064 INFO L495 AbstractCegarLoop]: Abstraction has 167208 states and 185235 transitions. [2022-07-21 00:34:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 167208 states and 185235 transitions. [2022-07-21 00:34:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2022-07-21 00:34:57,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:57,345 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:57,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 00:34:57,345 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash -782167627, now seen corresponding path program 1 times [2022-07-21 00:34:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:57,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977872995] [2022-07-21 00:34:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:57,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1347 proven. 485 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-21 00:34:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977872995] [2022-07-21 00:34:57,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977872995] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:34:57,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266637103] [2022-07-21 00:34:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:34:57,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:34:57,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:34:57,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 00:34:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:58,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 00:34:58,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:34:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1401 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-07-21 00:34:58,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:34:58,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266637103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:58,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:34:58,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-07-21 00:34:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544315905] [2022-07-21 00:34:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:58,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:34:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:34:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-21 00:34:58,512 INFO L87 Difference]: Start difference. First operand 167208 states and 185235 transitions. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:35:06,947 INFO L93 Difference]: Finished difference Result 495515 states and 559455 transitions. [2022-07-21 00:35:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:35:06,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 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 1272 [2022-07-21 00:35:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:35:07,368 INFO L225 Difference]: With dead ends: 495515 [2022-07-21 00:35:07,369 INFO L226 Difference]: Without dead ends: 331039 [2022-07-21 00:35:07,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-21 00:35:07,459 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 3317 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6193 mSolverCounterSat, 2810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 9003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2810 IncrementalHoareTripleChecker+Valid, 6193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-21 00:35:07,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 939 Invalid, 9003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2810 Valid, 6193 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-07-21 00:35:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331039 states. [2022-07-21 00:35:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331039 to 321466. [2022-07-21 00:35:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321466 states, 321465 states have (on average 1.1067021293142332) internal successors, (355766), 321465 states have internal predecessors, (355766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321466 states to 321466 states and 355766 transitions. [2022-07-21 00:35:11,880 INFO L78 Accepts]: Start accepts. Automaton has 321466 states and 355766 transitions. Word has length 1272 [2022-07-21 00:35:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:35:11,881 INFO L495 AbstractCegarLoop]: Abstraction has 321466 states and 355766 transitions. [2022-07-21 00:35:11,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 321466 states and 355766 transitions. [2022-07-21 00:35:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1370 [2022-07-21 00:35:11,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:35:11,922 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:35:11,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 00:35:12,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:35:12,136 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:35:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:35:12,136 INFO L85 PathProgramCache]: Analyzing trace with hash -145043743, now seen corresponding path program 1 times [2022-07-21 00:35:12,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:35:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940251548] [2022-07-21 00:35:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:35:12,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:35:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:35:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 530 proven. 485 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-21 00:35:12,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:35:12,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940251548] [2022-07-21 00:35:12,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940251548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:35:12,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074404919] [2022-07-21 00:35:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:35:12,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:35:12,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:35:12,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:35:12,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 00:35:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:35:13,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:35:13,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:35:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 514 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2022-07-21 00:35:13,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:35:13,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074404919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:35:13,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:35:13,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-21 00:35:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930908333] [2022-07-21 00:35:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:35:13,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:35:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:35:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:35:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 00:35:13,419 INFO L87 Difference]: Start difference. First operand 321466 states and 355766 transitions. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:35:19,790 INFO L93 Difference]: Finished difference Result 738484 states and 824582 transitions. [2022-07-21 00:35:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:35:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 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 1369 [2022-07-21 00:35:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:35:20,571 INFO L225 Difference]: With dead ends: 738484 [2022-07-21 00:35:20,572 INFO L226 Difference]: Without dead ends: 419750 [2022-07-21 00:35:20,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1374 GetRequests, 1368 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 00:35:20,675 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 1419 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-21 00:35:20,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 1440 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 4621 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-21 00:35:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419750 states. [2022-07-21 00:35:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419750 to 406094. [2022-07-21 00:35:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406094 states, 406093 states have (on average 1.0998588993161664) internal successors, (446645), 406093 states have internal predecessors, (446645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406094 states to 406094 states and 446645 transitions. [2022-07-21 00:35:25,932 INFO L78 Accepts]: Start accepts. Automaton has 406094 states and 446645 transitions. Word has length 1369 [2022-07-21 00:35:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:35:25,933 INFO L495 AbstractCegarLoop]: Abstraction has 406094 states and 446645 transitions. [2022-07-21 00:35:25,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 406094 states and 446645 transitions. [2022-07-21 00:35:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2022-07-21 00:35:25,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:35:25,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:35:25,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 00:35:26,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:35:26,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:35:26,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:35:26,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1588518478, now seen corresponding path program 1 times [2022-07-21 00:35:26,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:35:26,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700925288] [2022-07-21 00:35:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:35:26,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:35:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:35:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 645 proven. 485 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 00:35:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:35:27,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700925288] [2022-07-21 00:35:27,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700925288] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:35:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997359271] [2022-07-21 00:35:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:35:27,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:35:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:35:27,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:35:27,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process