./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/Problem17_label48.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 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:34:06,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:34:06,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:34:06,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:34:06,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:34:06,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:34:06,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:34:06,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:34:06,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:34:06,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:34:06,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:34:06,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:34:06,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:34:06,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:34:06,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:34:06,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:34:06,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:34:06,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:34:06,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:34:06,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:34:06,624 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:34:06,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:34:06,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:34:06,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:34:06,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:34:06,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:34:06,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:34:06,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:34:06,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:34:06,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:34:06,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:34:06,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:34:06,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:34:06,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:34:06,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:34:06,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:34:06,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:34:06,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:34:06,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:34:06,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:34:06,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:34:06,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:34:06,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:34:06,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:34:06,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:34:06,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:34:06,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:34:06,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:34:06,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:34:06,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:34:06,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:34:06,667 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:34:06,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:34:06,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:34:06,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:34:06,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:34:06,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:34:06,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:34:06,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:34:06,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:34:06,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:34:06,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:34:06,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:34:06,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:34:06,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:34:06,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:34:06,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:34:06,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:34:06,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:34:06,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:34:06,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:34:06,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:34:06,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:34:06,672 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:34:06,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:34:06,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:34:06,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c [2022-07-12 01:34:06,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:34:06,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:34:06,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:34:06,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:34:06,917 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:34:06,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2022-07-12 01:34:06,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f404d40d/51dc2042281648ddb5af8a428c5cb77e/FLAG317b3b6b8 [2022-07-12 01:34:07,554 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:34:07,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2022-07-12 01:34:07,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f404d40d/51dc2042281648ddb5af8a428c5cb77e/FLAG317b3b6b8 [2022-07-12 01:34:07,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f404d40d/51dc2042281648ddb5af8a428c5cb77e [2022-07-12 01:34:07,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:34:07,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:34:08,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:34:08,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:34:08,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:34:08,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:34:07" (1/1) ... [2022-07-12 01:34:08,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34aa284e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08, skipping insertion in model container [2022-07-12 01:34:08,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:34:07" (1/1) ... [2022-07-12 01:34:08,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:34:08,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:34:08,271 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/Problem17_label48.c[6493,6506] [2022-07-12 01:34:08,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:34:08,739 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:34:08,767 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/Problem17_label48.c[6493,6506] [2022-07-12 01:34:08,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:34:08,998 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:34:08,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08 WrapperNode [2022-07-12 01:34:08,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:34:09,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:34:09,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:34:09,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:34:09,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,253 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-12 01:34:09,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:34:09,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:34:09,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:34:09,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:34:09,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:34:09,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:34:09,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:34:09,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:34:09,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (1/1) ... [2022-07-12 01:34:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:34:09,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:34:09,521 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) [2022-07-12 01:34:09,522 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 [2022-07-12 01:34:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:34:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:34:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:34:09,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:34:09,613 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:34:09,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:34:12,031 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:34:12,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:34:12,039 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:34:12,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:34:12 BoogieIcfgContainer [2022-07-12 01:34:12,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:34:12,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:34:12,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:34:12,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:34:12,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:34:07" (1/3) ... [2022-07-12 01:34:12,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5e574e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:34:12, skipping insertion in model container [2022-07-12 01:34:12,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:34:08" (2/3) ... [2022-07-12 01:34:12,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5e574e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:34:12, skipping insertion in model container [2022-07-12 01:34:12,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:34:12" (3/3) ... [2022-07-12 01:34:12,048 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label48.c [2022-07-12 01:34:12,060 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:34:12,060 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:34:12,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:34:12,107 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@7d851874, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55aa447 [2022-07-12 01:34:12,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:34:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 01:34:12,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:12,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:12,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash 712930081, now seen corresponding path program 1 times [2022-07-12 01:34:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070145882] [2022-07-12 01:34:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:12,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:12,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070145882] [2022-07-12 01:34:12,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070145882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:12,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:12,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747201309] [2022-07-12 01:34:12,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:12,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:12,311 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:14,473 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-07-12 01:34:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-12 01:34:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:14,490 INFO L225 Difference]: With dead ends: 1644 [2022-07-12 01:34:14,490 INFO L226 Difference]: Without dead ends: 977 [2022-07-12 01:34:14,494 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 [2022-07-12 01:34:14,497 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 445 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:14,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 01:34:14,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-07-12 01:34:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-07-12 01:34:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-07-12 01:34:14,567 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 43 [2022-07-12 01:34:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:14,567 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-07-12 01:34:14,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-07-12 01:34:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 01:34:14,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:14,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:14,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:34:14,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1850762806, now seen corresponding path program 1 times [2022-07-12 01:34:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:14,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102690391] [2022-07-12 01:34:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:14,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:14,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102690391] [2022-07-12 01:34:14,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102690391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:14,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:14,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457862618] [2022-07-12 01:34:14,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:14,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:14,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:14,719 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:16,685 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2022-07-12 01:34:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-12 01:34:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:16,691 INFO L225 Difference]: With dead ends: 2815 [2022-07-12 01:34:16,691 INFO L226 Difference]: Without dead ends: 1846 [2022-07-12 01:34:16,692 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 [2022-07-12 01:34:16,693 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:16,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:34:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-07-12 01:34:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2022-07-12 01:34:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2022-07-12 01:34:16,730 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 110 [2022-07-12 01:34:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:16,730 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2022-07-12 01:34:16,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2022-07-12 01:34:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 01:34:16,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:16,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:16,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:34:16,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:16,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash -995864428, now seen corresponding path program 1 times [2022-07-12 01:34:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:16,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831217106] [2022-07-12 01:34:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:16,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831217106] [2022-07-12 01:34:16,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831217106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:16,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:16,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:16,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762419423] [2022-07-12 01:34:16,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:16,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:16,894 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:20,210 INFO L93 Difference]: Finished difference Result 6767 states and 9263 transitions. [2022-07-12 01:34:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-12 01:34:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:20,223 INFO L225 Difference]: With dead ends: 6767 [2022-07-12 01:34:20,223 INFO L226 Difference]: Without dead ends: 4928 [2022-07-12 01:34:20,226 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 [2022-07-12 01:34:20,231 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 872 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:20,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 328 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 01:34:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2022-07-12 01:34:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4875. [2022-07-12 01:34:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.2870332375871973) internal successors, (6273), 4874 states have internal predecessors, (6273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6273 transitions. [2022-07-12 01:34:20,295 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6273 transitions. Word has length 113 [2022-07-12 01:34:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 4875 states and 6273 transitions. [2022-07-12 01:34:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6273 transitions. [2022-07-12 01:34:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 01:34:20,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:20,307 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, 2, 2, 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] [2022-07-12 01:34:20,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:34:20,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2113802819, now seen corresponding path program 1 times [2022-07-12 01:34:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:20,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517604158] [2022-07-12 01:34:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:20,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 01:34:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:20,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517604158] [2022-07-12 01:34:20,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517604158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:20,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:20,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:20,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478601770] [2022-07-12 01:34:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:20,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:20,452 INFO L87 Difference]: Start difference. First operand 4875 states and 6273 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:22,042 INFO L93 Difference]: Finished difference Result 14436 states and 18550 transitions. [2022-07-12 01:34:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:22,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 179 [2022-07-12 01:34:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:22,063 INFO L225 Difference]: With dead ends: 14436 [2022-07-12 01:34:22,063 INFO L226 Difference]: Without dead ends: 8277 [2022-07-12 01:34:22,070 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 [2022-07-12 01:34:22,077 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:22,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2022-07-12 01:34:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6571. [2022-07-12 01:34:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6570 states have (on average 1.1796042617960427) internal successors, (7750), 6570 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 7750 transitions. [2022-07-12 01:34:22,204 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 7750 transitions. Word has length 179 [2022-07-12 01:34:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:22,204 INFO L495 AbstractCegarLoop]: Abstraction has 6571 states and 7750 transitions. [2022-07-12 01:34:22,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 7750 transitions. [2022-07-12 01:34:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 01:34:22,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:22,206 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, 2, 2, 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] [2022-07-12 01:34:22,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:34:22,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash 280509979, now seen corresponding path program 1 times [2022-07-12 01:34:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:22,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987743107] [2022-07-12 01:34:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987743107] [2022-07-12 01:34:22,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987743107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:22,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:22,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134863316] [2022-07-12 01:34:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:22,279 INFO L87 Difference]: Start difference. First operand 6571 states and 7750 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:23,867 INFO L93 Difference]: Finished difference Result 16550 states and 19925 transitions. [2022-07-12 01:34:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:23,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-07-12 01:34:23,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:23,905 INFO L225 Difference]: With dead ends: 16550 [2022-07-12 01:34:23,906 INFO L226 Difference]: Without dead ends: 9981 [2022-07-12 01:34:23,915 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 [2022-07-12 01:34:23,915 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 499 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:23,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 801 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2022-07-12 01:34:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 9981. [2022-07-12 01:34:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9980 states have (on average 1.1698396793587174) internal successors, (11675), 9980 states have internal predecessors, (11675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 11675 transitions. [2022-07-12 01:34:24,078 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 11675 transitions. Word has length 192 [2022-07-12 01:34:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:24,079 INFO L495 AbstractCegarLoop]: Abstraction has 9981 states and 11675 transitions. [2022-07-12 01:34:24,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 11675 transitions. [2022-07-12 01:34:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-12 01:34:24,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:24,083 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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:24,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:34:24,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:24,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:24,085 INFO L85 PathProgramCache]: Analyzing trace with hash 193566755, now seen corresponding path program 1 times [2022-07-12 01:34:24,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:24,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814782405] [2022-07-12 01:34:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 01:34:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814782405] [2022-07-12 01:34:24,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814782405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:24,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:24,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832858452] [2022-07-12 01:34:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:24,181 INFO L87 Difference]: Start difference. First operand 9981 states and 11675 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:26,136 INFO L93 Difference]: Finished difference Result 24248 states and 28757 transitions. [2022-07-12 01:34:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 197 [2022-07-12 01:34:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:26,163 INFO L225 Difference]: With dead ends: 24248 [2022-07-12 01:34:26,163 INFO L226 Difference]: Without dead ends: 14269 [2022-07-12 01:34:26,173 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 [2022-07-12 01:34:26,174 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 477 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:26,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 444 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:34:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14269 states. [2022-07-12 01:34:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 13397. [2022-07-12 01:34:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 1.1923708569722304) internal successors, (15973), 13396 states have internal predecessors, (15973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 15973 transitions. [2022-07-12 01:34:26,376 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 15973 transitions. Word has length 197 [2022-07-12 01:34:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:26,376 INFO L495 AbstractCegarLoop]: Abstraction has 13397 states and 15973 transitions. [2022-07-12 01:34:26,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 15973 transitions. [2022-07-12 01:34:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-12 01:34:26,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:26,380 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:26,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:34:26,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash -256455219, now seen corresponding path program 1 times [2022-07-12 01:34:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:26,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800077146] [2022-07-12 01:34:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:26,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:34:26,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:26,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800077146] [2022-07-12 01:34:26,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800077146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:26,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:26,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823602214] [2022-07-12 01:34:26,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:26,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:26,488 INFO L87 Difference]: Start difference. First operand 13397 states and 15973 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:28,413 INFO L93 Difference]: Finished difference Result 30624 states and 36860 transitions. [2022-07-12 01:34:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:28,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 242 [2022-07-12 01:34:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:28,439 INFO L225 Difference]: With dead ends: 30624 [2022-07-12 01:34:28,439 INFO L226 Difference]: Without dead ends: 17229 [2022-07-12 01:34:28,452 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 [2022-07-12 01:34:28,453 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:28,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 410 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:34:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17229 states. [2022-07-12 01:34:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17229 to 13379. [2022-07-12 01:34:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 1.190611451637016) internal successors, (15928), 13378 states have internal predecessors, (15928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 15928 transitions. [2022-07-12 01:34:28,651 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 15928 transitions. Word has length 242 [2022-07-12 01:34:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:28,652 INFO L495 AbstractCegarLoop]: Abstraction has 13379 states and 15928 transitions. [2022-07-12 01:34:28,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 15928 transitions. [2022-07-12 01:34:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-12 01:34:28,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:28,656 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:28,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:34:28,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:28,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1929609517, now seen corresponding path program 1 times [2022-07-12 01:34:28,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:28,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922250941] [2022-07-12 01:34:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:28,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:28,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922250941] [2022-07-12 01:34:28,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922250941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:28,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:28,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219874460] [2022-07-12 01:34:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:28,753 INFO L87 Difference]: Start difference. First operand 13379 states and 15928 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:30,506 INFO L93 Difference]: Finished difference Result 30622 states and 36711 transitions. [2022-07-12 01:34:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:30,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2022-07-12 01:34:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:30,528 INFO L225 Difference]: With dead ends: 30622 [2022-07-12 01:34:30,528 INFO L226 Difference]: Without dead ends: 17245 [2022-07-12 01:34:30,535 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 [2022-07-12 01:34:30,535 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 356 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:30,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 887 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:34:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17245 states. [2022-07-12 01:34:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17245 to 16812. [2022-07-12 01:34:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16812 states, 16811 states have (on average 1.1727440366426745) internal successors, (19715), 16811 states have internal predecessors, (19715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16812 states to 16812 states and 19715 transitions. [2022-07-12 01:34:30,680 INFO L78 Accepts]: Start accepts. Automaton has 16812 states and 19715 transitions. Word has length 259 [2022-07-12 01:34:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:30,681 INFO L495 AbstractCegarLoop]: Abstraction has 16812 states and 19715 transitions. [2022-07-12 01:34:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 16812 states and 19715 transitions. [2022-07-12 01:34:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-12 01:34:30,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:30,684 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, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:34:30,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:34:30,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1330701290, now seen corresponding path program 1 times [2022-07-12 01:34:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:30,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982474574] [2022-07-12 01:34:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 01:34:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982474574] [2022-07-12 01:34:30,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982474574] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:34:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679807490] [2022-07-12 01:34:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:30,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:34:30,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:34:30,783 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) [2022-07-12 01:34:30,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:34:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:30,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 01:34:30,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:34:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 01:34:31,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:34:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 01:34:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679807490] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:34:31,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:34:31,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-12 01:34:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935228145] [2022-07-12 01:34:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:34:31,527 INFO L87 Difference]: Start difference. First operand 16812 states and 19715 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:34,810 INFO L93 Difference]: Finished difference Result 47275 states and 56056 transitions. [2022-07-12 01:34:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:34,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 267 [2022-07-12 01:34:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:34,850 INFO L225 Difference]: With dead ends: 47275 [2022-07-12 01:34:34,850 INFO L226 Difference]: Without dead ends: 28306 [2022-07-12 01:34:34,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 529 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:34:34,870 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1064 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:34,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 149 Invalid, 3491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1225 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 01:34:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28306 states. [2022-07-12 01:34:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28306 to 27875. [2022-07-12 01:34:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27875 states, 27874 states have (on average 1.1424625098658248) internal successors, (31845), 27874 states have internal predecessors, (31845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27875 states to 27875 states and 31845 transitions. [2022-07-12 01:34:35,263 INFO L78 Accepts]: Start accepts. Automaton has 27875 states and 31845 transitions. Word has length 267 [2022-07-12 01:34:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:35,263 INFO L495 AbstractCegarLoop]: Abstraction has 27875 states and 31845 transitions. [2022-07-12 01:34:35,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 27875 states and 31845 transitions. [2022-07-12 01:34:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-12 01:34:35,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:35,269 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:34:35,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 01:34:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:34:35,486 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1288715760, now seen corresponding path program 1 times [2022-07-12 01:34:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:35,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514415702] [2022-07-12 01:34:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-07-12 01:34:35,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:35,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514415702] [2022-07-12 01:34:35,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514415702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:35,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:35,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336112817] [2022-07-12 01:34:35,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:35,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:35,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:35,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:35,626 INFO L87 Difference]: Start difference. First operand 27875 states and 31845 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:37,568 INFO L93 Difference]: Finished difference Result 64690 states and 73399 transitions. [2022-07-12 01:34:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 [2022-07-12 01:34:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:37,605 INFO L225 Difference]: With dead ends: 64690 [2022-07-12 01:34:37,605 INFO L226 Difference]: Without dead ends: 36817 [2022-07-12 01:34:37,621 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 [2022-07-12 01:34:37,621 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 485 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 282 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:34:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36817 states. [2022-07-12 01:34:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36817 to 36367. [2022-07-12 01:34:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36367 states, 36366 states have (on average 1.122422042567233) internal successors, (40818), 36366 states have internal predecessors, (40818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36367 states to 36367 states and 40818 transitions. [2022-07-12 01:34:38,108 INFO L78 Accepts]: Start accepts. Automaton has 36367 states and 40818 transitions. Word has length 361 [2022-07-12 01:34:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:38,108 INFO L495 AbstractCegarLoop]: Abstraction has 36367 states and 40818 transitions. [2022-07-12 01:34:38,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 36367 states and 40818 transitions. [2022-07-12 01:34:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-07-12 01:34:38,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:38,115 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:34:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:34:38,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1181895680, now seen corresponding path program 1 times [2022-07-12 01:34:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:38,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030452311] [2022-07-12 01:34:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 01:34:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:38,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030452311] [2022-07-12 01:34:38,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030452311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:38,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:38,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243172884] [2022-07-12 01:34:38,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:38,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:38,227 INFO L87 Difference]: Start difference. First operand 36367 states and 40818 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:39,776 INFO L93 Difference]: Finished difference Result 79526 states and 89552 transitions. [2022-07-12 01:34:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 382 [2022-07-12 01:34:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:39,824 INFO L225 Difference]: With dead ends: 79526 [2022-07-12 01:34:39,824 INFO L226 Difference]: Without dead ends: 43161 [2022-07-12 01:34:39,844 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 [2022-07-12 01:34:39,845 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 272 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:39,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 793 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43161 states. [2022-07-12 01:34:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43161 to 43161. [2022-07-12 01:34:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43161 states, 43160 states have (on average 1.1083178869323447) internal successors, (47835), 43160 states have internal predecessors, (47835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43161 states to 43161 states and 47835 transitions. [2022-07-12 01:34:40,470 INFO L78 Accepts]: Start accepts. Automaton has 43161 states and 47835 transitions. Word has length 382 [2022-07-12 01:34:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:40,471 INFO L495 AbstractCegarLoop]: Abstraction has 43161 states and 47835 transitions. [2022-07-12 01:34:40,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 43161 states and 47835 transitions. [2022-07-12 01:34:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-12 01:34:40,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:40,478 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:34:40,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -728615819, now seen corresponding path program 1 times [2022-07-12 01:34:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:40,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073295997] [2022-07-12 01:34:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:34:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073295997] [2022-07-12 01:34:40,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073295997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:40,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:40,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508508670] [2022-07-12 01:34:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:40,700 INFO L87 Difference]: Start difference. First operand 43161 states and 47835 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:42,396 INFO L93 Difference]: Finished difference Result 98273 states and 108802 transitions. [2022-07-12 01:34:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 405 [2022-07-12 01:34:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:42,457 INFO L225 Difference]: With dead ends: 98273 [2022-07-12 01:34:42,457 INFO L226 Difference]: Without dead ends: 55114 [2022-07-12 01:34:42,485 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 [2022-07-12 01:34:42,486 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 336 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:42,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 636 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55114 states. [2022-07-12 01:34:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55114 to 52106. [2022-07-12 01:34:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52106 states, 52105 states have (on average 1.1077055944726995) internal successors, (57717), 52105 states have internal predecessors, (57717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52106 states to 52106 states and 57717 transitions. [2022-07-12 01:34:43,175 INFO L78 Accepts]: Start accepts. Automaton has 52106 states and 57717 transitions. Word has length 405 [2022-07-12 01:34:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:43,176 INFO L495 AbstractCegarLoop]: Abstraction has 52106 states and 57717 transitions. [2022-07-12 01:34:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 52106 states and 57717 transitions. [2022-07-12 01:34:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-07-12 01:34:43,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:43,187 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:43,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 01:34:43,187 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2010516335, now seen corresponding path program 1 times [2022-07-12 01:34:43,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:43,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976208173] [2022-07-12 01:34:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:43,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:34:43,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:43,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976208173] [2022-07-12 01:34:43,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976208173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:43,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:43,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:43,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937396373] [2022-07-12 01:34:43,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:43,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:43,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:43,362 INFO L87 Difference]: Start difference. First operand 52106 states and 57717 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:46,528 INFO L93 Difference]: Finished difference Result 130213 states and 143849 transitions. [2022-07-12 01:34:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 448 [2022-07-12 01:34:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:46,601 INFO L225 Difference]: With dead ends: 130213 [2022-07-12 01:34:46,601 INFO L226 Difference]: Without dead ends: 77684 [2022-07-12 01:34:46,629 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 [2022-07-12 01:34:46,631 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 772 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:46,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 176 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 01:34:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77684 states. [2022-07-12 01:34:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77684 to 69116. [2022-07-12 01:34:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69116 states, 69115 states have (on average 1.1004991680532445) internal successors, (76061), 69115 states have internal predecessors, (76061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69116 states to 69116 states and 76061 transitions. [2022-07-12 01:34:47,388 INFO L78 Accepts]: Start accepts. Automaton has 69116 states and 76061 transitions. Word has length 448 [2022-07-12 01:34:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:47,389 INFO L495 AbstractCegarLoop]: Abstraction has 69116 states and 76061 transitions. [2022-07-12 01:34:47,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:47,389 INFO L276 IsEmpty]: Start isEmpty. Operand 69116 states and 76061 transitions. [2022-07-12 01:34:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-07-12 01:34:47,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:47,399 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:47,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:34:47,399 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash -647586439, now seen corresponding path program 1 times [2022-07-12 01:34:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:47,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470236248] [2022-07-12 01:34:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:34:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:47,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470236248] [2022-07-12 01:34:47,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470236248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:47,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:47,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402051079] [2022-07-12 01:34:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:47,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:47,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:47,738 INFO L87 Difference]: Start difference. First operand 69116 states and 76061 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:49,589 INFO L93 Difference]: Finished difference Result 153595 states and 169224 transitions. [2022-07-12 01:34:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:49,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 455 [2022-07-12 01:34:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:49,675 INFO L225 Difference]: With dead ends: 153595 [2022-07-12 01:34:49,676 INFO L226 Difference]: Without dead ends: 84056 [2022-07-12 01:34:49,716 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 [2022-07-12 01:34:49,717 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 446 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:49,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 701 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84056 states. [2022-07-12 01:34:50,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84056 to 82333. [2022-07-12 01:34:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82333 states, 82332 states have (on average 1.1011149978137298) internal successors, (90657), 82332 states have internal predecessors, (90657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82333 states to 82333 states and 90657 transitions. [2022-07-12 01:34:50,703 INFO L78 Accepts]: Start accepts. Automaton has 82333 states and 90657 transitions. Word has length 455 [2022-07-12 01:34:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:50,704 INFO L495 AbstractCegarLoop]: Abstraction has 82333 states and 90657 transitions. [2022-07-12 01:34:50,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:50,704 INFO L276 IsEmpty]: Start isEmpty. Operand 82333 states and 90657 transitions. [2022-07-12 01:34:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-07-12 01:34:50,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:50,714 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, 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, 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] [2022-07-12 01:34:50,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:34:50,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1334333508, now seen corresponding path program 1 times [2022-07-12 01:34:50,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:50,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186718597] [2022-07-12 01:34:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-07-12 01:34:51,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:51,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186718597] [2022-07-12 01:34:51,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186718597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:51,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:51,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:51,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675627031] [2022-07-12 01:34:51,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:51,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:51,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:51,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:51,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:51,042 INFO L87 Difference]: Start difference. First operand 82333 states and 90657 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:52,430 INFO L93 Difference]: Finished difference Result 162524 states and 178775 transitions. [2022-07-12 01:34:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 469 [2022-07-12 01:34:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:52,512 INFO L225 Difference]: With dead ends: 162524 [2022-07-12 01:34:52,513 INFO L226 Difference]: Without dead ends: 80193 [2022-07-12 01:34:52,545 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 [2022-07-12 01:34:52,546 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 622 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:52,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 103 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 01:34:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80193 states. [2022-07-12 01:34:53,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80193 to 80178. [2022-07-12 01:34:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80178 states, 80177 states have (on average 1.0985569427641344) internal successors, (88079), 80177 states have internal predecessors, (88079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80178 states to 80178 states and 88079 transitions. [2022-07-12 01:34:53,580 INFO L78 Accepts]: Start accepts. Automaton has 80178 states and 88079 transitions. Word has length 469 [2022-07-12 01:34:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:53,580 INFO L495 AbstractCegarLoop]: Abstraction has 80178 states and 88079 transitions. [2022-07-12 01:34:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 80178 states and 88079 transitions. [2022-07-12 01:34:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-07-12 01:34:53,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:53,592 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, 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, 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] [2022-07-12 01:34:53,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:34:53,592 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1193487407, now seen corresponding path program 1 times [2022-07-12 01:34:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849932260] [2022-07-12 01:34:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:53,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 01:34:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:53,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849932260] [2022-07-12 01:34:53,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849932260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:53,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:53,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442584620] [2022-07-12 01:34:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:53,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:53,734 INFO L87 Difference]: Start difference. First operand 80178 states and 88079 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:56,781 INFO L93 Difference]: Finished difference Result 189350 states and 207625 transitions. [2022-07-12 01:34:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 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 487 [2022-07-12 01:34:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:56,901 INFO L225 Difference]: With dead ends: 189350 [2022-07-12 01:34:56,901 INFO L226 Difference]: Without dead ends: 104916 [2022-07-12 01:34:56,917 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 [2022-07-12 01:34:56,917 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 741 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:56,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 242 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:34:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104916 states. [2022-07-12 01:34:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104916 to 100611. [2022-07-12 01:34:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100611 states, 100610 states have (on average 1.0951197694066197) internal successors, (110180), 100610 states have internal predecessors, (110180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100611 states to 100611 states and 110180 transitions. [2022-07-12 01:34:58,282 INFO L78 Accepts]: Start accepts. Automaton has 100611 states and 110180 transitions. Word has length 487 [2022-07-12 01:34:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:58,282 INFO L495 AbstractCegarLoop]: Abstraction has 100611 states and 110180 transitions. [2022-07-12 01:34:58,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 100611 states and 110180 transitions. [2022-07-12 01:34:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-12 01:34:58,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:58,294 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:58,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:34:58,294 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:58,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash -966903065, now seen corresponding path program 1 times [2022-07-12 01:34:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:58,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50732692] [2022-07-12 01:34:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:58,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-12 01:34:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:58,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50732692] [2022-07-12 01:34:58,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50732692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:58,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:58,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939079505] [2022-07-12 01:34:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:58,431 INFO L87 Difference]: Start difference. First operand 100611 states and 110180 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:00,362 INFO L93 Difference]: Finished difference Result 213971 states and 234379 transitions. [2022-07-12 01:35:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:35:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 492 [2022-07-12 01:35:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:00,503 INFO L225 Difference]: With dead ends: 213971 [2022-07-12 01:35:00,503 INFO L226 Difference]: Without dead ends: 113362 [2022-07-12 01:35:00,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:00,553 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 399 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:00,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 320 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:35:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113362 states. [2022-07-12 01:35:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113362 to 110800. [2022-07-12 01:35:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110800 states, 110799 states have (on average 1.0898564066462693) internal successors, (120755), 110799 states have internal predecessors, (120755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110800 states to 110800 states and 120755 transitions. [2022-07-12 01:35:02,073 INFO L78 Accepts]: Start accepts. Automaton has 110800 states and 120755 transitions. Word has length 492 [2022-07-12 01:35:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:02,073 INFO L495 AbstractCegarLoop]: Abstraction has 110800 states and 120755 transitions. [2022-07-12 01:35:02,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 110800 states and 120755 transitions. [2022-07-12 01:35:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-07-12 01:35:02,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:02,090 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:35:02,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:35:02,090 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 56960881, now seen corresponding path program 1 times [2022-07-12 01:35:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691046220] [2022-07-12 01:35:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-12 01:35:02,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691046220] [2022-07-12 01:35:02,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691046220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:02,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:02,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:35:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909364554] [2022-07-12 01:35:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:35:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:35:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:35:02,311 INFO L87 Difference]: Start difference. First operand 110800 states and 120755 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:05,438 INFO L93 Difference]: Finished difference Result 232233 states and 253625 transitions. [2022-07-12 01:35:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:35:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 503 [2022-07-12 01:35:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:05,594 INFO L225 Difference]: With dead ends: 232233 [2022-07-12 01:35:05,595 INFO L226 Difference]: Without dead ends: 121010 [2022-07-12 01:35:05,865 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 [2022-07-12 01:35:05,867 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 806 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:05,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 790 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:35:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121010 states. [2022-07-12 01:35:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121010 to 106945. [2022-07-12 01:35:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106945 states, 106944 states have (on average 1.0883640035906643) internal successors, (116394), 106944 states have internal predecessors, (116394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106945 states to 106945 states and 116394 transitions. [2022-07-12 01:35:07,164 INFO L78 Accepts]: Start accepts. Automaton has 106945 states and 116394 transitions. Word has length 503 [2022-07-12 01:35:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:07,165 INFO L495 AbstractCegarLoop]: Abstraction has 106945 states and 116394 transitions. [2022-07-12 01:35:07,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 106945 states and 116394 transitions. [2022-07-12 01:35:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-07-12 01:35:07,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:07,180 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, 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, 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] [2022-07-12 01:35:07,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:35:07,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:07,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1996166593, now seen corresponding path program 1 times [2022-07-12 01:35:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:07,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052022303] [2022-07-12 01:35:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 427 proven. 41 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:35:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:07,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052022303] [2022-07-12 01:35:07,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052022303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:35:07,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282379712] [2022-07-12 01:35:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:07,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:35:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:35:07,620 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) [2022-07-12 01:35:07,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:35:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:07,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 01:35:07,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:35:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-12 01:35:08,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:35:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-12 01:35:08,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282379712] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 01:35:08,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 01:35:08,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-07-12 01:35:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345452110] [2022-07-12 01:35:08,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 01:35:08,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 01:35:08,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 01:35:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 01:35:08,809 INFO L87 Difference]: Start difference. First operand 106945 states and 116394 transitions. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:21,538 INFO L93 Difference]: Finished difference Result 279039 states and 303155 transitions. [2022-07-12 01:35:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 01:35:21,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 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 532 [2022-07-12 01:35:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:21,729 INFO L225 Difference]: With dead ends: 279039 [2022-07-12 01:35:21,730 INFO L226 Difference]: Without dead ends: 166556 [2022-07-12 01:35:21,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2022-07-12 01:35:21,759 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 10180 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 14534 mSolverCounterSat, 2286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10180 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 16820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2286 IncrementalHoareTripleChecker+Valid, 14534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:21,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10180 Valid, 406 Invalid, 16820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2286 Valid, 14534 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-07-12 01:35:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166556 states. [2022-07-12 01:35:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166556 to 141824. [2022-07-12 01:35:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141824 states, 141823 states have (on average 1.0730558513076158) internal successors, (152184), 141823 states have internal predecessors, (152184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141824 states to 141824 states and 152184 transitions. [2022-07-12 01:35:23,620 INFO L78 Accepts]: Start accepts. Automaton has 141824 states and 152184 transitions. Word has length 532 [2022-07-12 01:35:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:23,621 INFO L495 AbstractCegarLoop]: Abstraction has 141824 states and 152184 transitions. [2022-07-12 01:35:23,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 141824 states and 152184 transitions. [2022-07-12 01:35:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-07-12 01:35:23,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:23,636 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:35:23,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:35:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:35:23,839 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash 118337143, now seen corresponding path program 1 times [2022-07-12 01:35:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:23,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829273662] [2022-07-12 01:35:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:35:24,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:24,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829273662] [2022-07-12 01:35:24,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829273662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:24,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:24,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:35:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789734205] [2022-07-12 01:35:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:24,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:35:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:35:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:24,044 INFO L87 Difference]: Start difference. First operand 141824 states and 152184 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:26,454 INFO L93 Difference]: Finished difference Result 284916 states and 305615 transitions. [2022-07-12 01:35:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:35:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 [2022-07-12 01:35:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:26,646 INFO L225 Difference]: With dead ends: 284916 [2022-07-12 01:35:26,647 INFO L226 Difference]: Without dead ends: 143944 [2022-07-12 01:35:26,702 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 [2022-07-12 01:35:26,703 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:26,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 671 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:35:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143944 states. [2022-07-12 01:35:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143944 to 142239. [2022-07-12 01:35:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142239 states, 142238 states have (on average 1.069306373824154) internal successors, (152096), 142238 states have internal predecessors, (152096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142239 states to 142239 states and 152096 transitions. [2022-07-12 01:35:28,549 INFO L78 Accepts]: Start accepts. Automaton has 142239 states and 152096 transitions. Word has length 614 [2022-07-12 01:35:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:28,550 INFO L495 AbstractCegarLoop]: Abstraction has 142239 states and 152096 transitions. [2022-07-12 01:35:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 142239 states and 152096 transitions. [2022-07-12 01:35:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-07-12 01:35:28,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:28,574 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:35:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 01:35:28,575 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1585088990, now seen corresponding path program 1 times [2022-07-12 01:35:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:28,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502873034] [2022-07-12 01:35:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 947 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-07-12 01:35:28,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:28,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502873034] [2022-07-12 01:35:28,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502873034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:28,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:28,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:35:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470049052] [2022-07-12 01:35:28,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:28,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:35:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:35:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:35:28,832 INFO L87 Difference]: Start difference. First operand 142239 states and 152096 transitions. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:31,976 INFO L93 Difference]: Finished difference Result 322368 states and 344571 transitions. [2022-07-12 01:35:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:35:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 692 [2022-07-12 01:35:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:32,503 INFO L225 Difference]: With dead ends: 322368 [2022-07-12 01:35:32,503 INFO L226 Difference]: Without dead ends: 180131 [2022-07-12 01:35:32,566 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 [2022-07-12 01:35:32,567 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 611 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:32,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 193 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 01:35:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180131 states. [2022-07-12 01:35:34,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180131 to 171196. [2022-07-12 01:35:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171196 states, 171195 states have (on average 1.0670872396974211) internal successors, (182680), 171195 states have internal predecessors, (182680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171196 states to 171196 states and 182680 transitions. [2022-07-12 01:35:34,741 INFO L78 Accepts]: Start accepts. Automaton has 171196 states and 182680 transitions. Word has length 692 [2022-07-12 01:35:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 171196 states and 182680 transitions. [2022-07-12 01:35:34,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 171196 states and 182680 transitions. [2022-07-12 01:35:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2022-07-12 01:35:34,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:34,765 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:35:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 01:35:34,765 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:34,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1426312733, now seen corresponding path program 1 times [2022-07-12 01:35:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:34,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214200399] [2022-07-12 01:35:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 843 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-07-12 01:35:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:34,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214200399] [2022-07-12 01:35:34,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214200399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:34,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:34,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:35:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485558199] [2022-07-12 01:35:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:35:34,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:35:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:34,953 INFO L87 Difference]: Start difference. First operand 171196 states and 182680 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:37,538 INFO L93 Difference]: Finished difference Result 358558 states and 382692 transitions. [2022-07-12 01:35:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:35:37,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 701 [2022-07-12 01:35:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:37,780 INFO L225 Difference]: With dead ends: 358558 [2022-07-12 01:35:37,781 INFO L226 Difference]: Without dead ends: 188214 [2022-07-12 01:35:37,863 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 [2022-07-12 01:35:37,863 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 403 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:37,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 282 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:35:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188214 states. [2022-07-12 01:35:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188214 to 168211. [2022-07-12 01:35:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168211 states, 168210 states have (on average 1.0622733487902027) internal successors, (178685), 168210 states have internal predecessors, (178685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168211 states to 168211 states and 178685 transitions. [2022-07-12 01:35:40,087 INFO L78 Accepts]: Start accepts. Automaton has 168211 states and 178685 transitions. Word has length 701 [2022-07-12 01:35:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:40,091 INFO L495 AbstractCegarLoop]: Abstraction has 168211 states and 178685 transitions. [2022-07-12 01:35:40,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 168211 states and 178685 transitions. [2022-07-12 01:35:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2022-07-12 01:35:40,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:40,125 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, 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, 3, 3, 3, 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] [2022-07-12 01:35:40,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 01:35:40,126 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash -556786478, now seen corresponding path program 1 times [2022-07-12 01:35:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:40,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353653877] [2022-07-12 01:35:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat