./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem04_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/Problem04_label57.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 38aa25e947c9aeec3b3f3e35d3468f9ff877b07f2e274d39775d21c39593400d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 09:10:49,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 09:10:49,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 09:10:49,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 09:10:49,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 09:10:49,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 09:10:49,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 09:10:49,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 09:10:49,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 09:10:49,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 09:10:49,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 09:10:49,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 09:10:49,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 09:10:49,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 09:10:49,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 09:10:49,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 09:10:49,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 09:10:49,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 09:10:49,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 09:10:49,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 09:10:49,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 09:10:49,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 09:10:49,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 09:10:49,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 09:10:49,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 09:10:49,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 09:10:49,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 09:10:49,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 09:10:49,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 09:10:49,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 09:10:49,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 09:10:49,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 09:10:49,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 09:10:49,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 09:10:49,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 09:10:49,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 09:10:49,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 09:10:49,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 09:10:49,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 09:10:49,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 09:10:49,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 09:10:49,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 09:10:49,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 09:10:49,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 09:10:49,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 09:10:49,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 09:10:49,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 09:10:49,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 09:10:49,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 09:10:49,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 09:10:49,563 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 09:10:49,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 09:10:49,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 09:10:49,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 09:10:49,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 09:10:49,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 09:10:49,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 09:10:49,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 09:10:49,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 09:10:49,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 09:10:49,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 09:10:49,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 09:10:49,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 09:10:49,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 09:10:49,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 09:10:49,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 09:10:49,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:10:49,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 09:10:49,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 09:10:49,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 09:10:49,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 09:10:49,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 09:10:49,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 09:10:49,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 09:10:49,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 09:10:49,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 09:10:49,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38aa25e947c9aeec3b3f3e35d3468f9ff877b07f2e274d39775d21c39593400d [2021-12-15 09:10:49,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 09:10:49,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 09:10:49,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 09:10:49,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 09:10:49,782 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 09:10:49,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label57.c [2021-12-15 09:10:49,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b0735ee/87f0e7c72a184e08bff8946dd30e2b0b/FLAG0ec22357c [2021-12-15 09:10:50,461 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 09:10:50,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label57.c [2021-12-15 09:10:50,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b0735ee/87f0e7c72a184e08bff8946dd30e2b0b/FLAG0ec22357c [2021-12-15 09:10:50,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b0735ee/87f0e7c72a184e08bff8946dd30e2b0b [2021-12-15 09:10:50,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 09:10:50,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 09:10:50,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 09:10:50,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 09:10:50,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 09:10:50,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:10:50" (1/1) ... [2021-12-15 09:10:50,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e00a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:50, skipping insertion in model container [2021-12-15 09:10:50,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:10:50" (1/1) ... [2021-12-15 09:10:50,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 09:10:50,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 09:10:51,950 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/Problem04_label57.c[181554,181567] [2021-12-15 09:10:51,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:10:51,980 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 09:10:52,471 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/Problem04_label57.c[181554,181567] [2021-12-15 09:10:52,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:10:52,498 INFO L208 MainTranslator]: Completed translation [2021-12-15 09:10:52,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52 WrapperNode [2021-12-15 09:10:52,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 09:10:52,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 09:10:52,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 09:10:52,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 09:10:52,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,767 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2021-12-15 09:10:52,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 09:10:52,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 09:10:52,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 09:10:52,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 09:10:52,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 09:10:52,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 09:10:52,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 09:10:52,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 09:10:52,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (1/1) ... [2021-12-15 09:10:52,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:10:52,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:10:52,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 09:10:52,975 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 [2021-12-15 09:10:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 09:10:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 09:10:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 09:10:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 09:10:53,090 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 09:10:53,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 09:10:55,975 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 09:10:55,993 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 09:10:55,993 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 09:10:55,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:10:55 BoogieIcfgContainer [2021-12-15 09:10:55,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 09:10:56,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 09:10:56,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 09:10:56,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 09:10:56,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:10:50" (1/3) ... [2021-12-15 09:10:56,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635f2e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:10:56, skipping insertion in model container [2021-12-15 09:10:56,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:52" (2/3) ... [2021-12-15 09:10:56,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635f2e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:10:56, skipping insertion in model container [2021-12-15 09:10:56,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:10:55" (3/3) ... [2021-12-15 09:10:56,005 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label57.c [2021-12-15 09:10:56,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 09:10:56,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 09:10:56,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 09:10:56,057 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 09:10:56,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 09:10:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:10:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2021-12-15 09:10:56,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:10:56,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:10:56,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:10:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:10:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash -947374155, now seen corresponding path program 1 times [2021-12-15 09:10:56,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:10:56,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630751798] [2021-12-15 09:10:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:10:56,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:10:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:10:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:10:57,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:10:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630751798] [2021-12-15 09:10:57,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630751798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:10:57,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:10:57,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:10:57,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089288188] [2021-12-15 09:10:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:10:57,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:10:57,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:10:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:10:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:10:57,218 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 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 264.6666666666667) internal successors, (794), 2 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:00,404 INFO L93 Difference]: Finished difference Result 2589 states and 5028 transitions. [2021-12-15 09:11:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:00,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 2 states have internal predecessors, (794), 0 states have call successors, (0), 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 794 [2021-12-15 09:11:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:00,428 INFO L225 Difference]: With dead ends: 2589 [2021-12-15 09:11:00,429 INFO L226 Difference]: Without dead ends: 1640 [2021-12-15 09:11:00,435 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:00,437 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 240 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 1175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1175 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:00,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 277 Invalid, 3507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1175 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-15 09:11:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-12-15 09:11:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2021-12-15 09:11:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 1.7803538743136058) internal successors, (2918), 1639 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2918 transitions. [2021-12-15 09:11:00,533 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2918 transitions. Word has length 794 [2021-12-15 09:11:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:00,536 INFO L470 AbstractCegarLoop]: Abstraction has 1640 states and 2918 transitions. [2021-12-15 09:11:00,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 2 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2918 transitions. [2021-12-15 09:11:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2021-12-15 09:11:00,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:00,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:00,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 09:11:00,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -27889937, now seen corresponding path program 1 times [2021-12-15 09:11:00,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:00,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600946201] [2021-12-15 09:11:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:00,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:11:00,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:00,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600946201] [2021-12-15 09:11:00,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600946201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:00,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:00,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:11:00,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742837861] [2021-12-15 09:11:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:00,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:00,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:00,823 INFO L87 Difference]: Start difference. First operand 1640 states and 2918 transitions. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 2 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:03,775 INFO L93 Difference]: Finished difference Result 4914 states and 8749 transitions. [2021-12-15 09:11:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:03,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 2 states have internal predecessors, (799), 0 states have call successors, (0), 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 799 [2021-12-15 09:11:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:03,787 INFO L225 Difference]: With dead ends: 4914 [2021-12-15 09:11:03,787 INFO L226 Difference]: Without dead ends: 3276 [2021-12-15 09:11:03,789 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:03,791 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 997 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:03,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 198 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-15 09:11:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-12-15 09:11:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3276. [2021-12-15 09:11:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3275 states have (on average 1.6912977099236641) internal successors, (5539), 3275 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 5539 transitions. [2021-12-15 09:11:03,846 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 5539 transitions. Word has length 799 [2021-12-15 09:11:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:03,847 INFO L470 AbstractCegarLoop]: Abstraction has 3276 states and 5539 transitions. [2021-12-15 09:11:03,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 2 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 5539 transitions. [2021-12-15 09:11:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2021-12-15 09:11:03,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:03,858 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:03,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 09:11:03,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:03,862 INFO L85 PathProgramCache]: Analyzing trace with hash -612005647, now seen corresponding path program 1 times [2021-12-15 09:11:03,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:03,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292308452] [2021-12-15 09:11:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:03,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:11:04,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:04,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292308452] [2021-12-15 09:11:04,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292308452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:04,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:04,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:11:04,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250489463] [2021-12-15 09:11:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:04,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:04,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:04,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:04,071 INFO L87 Difference]: Start difference. First operand 3276 states and 5539 transitions. Second operand has 3 states, 3 states have (on average 270.0) internal successors, (810), 2 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:06,621 INFO L93 Difference]: Finished difference Result 9822 states and 16612 transitions. [2021-12-15 09:11:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 270.0) internal successors, (810), 2 states have internal predecessors, (810), 0 states have call successors, (0), 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 810 [2021-12-15 09:11:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:06,639 INFO L225 Difference]: With dead ends: 9822 [2021-12-15 09:11:06,640 INFO L226 Difference]: Without dead ends: 6548 [2021-12-15 09:11:06,643 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:06,644 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 1007 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:06,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 473 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-15 09:11:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-12-15 09:11:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6548. [2021-12-15 09:11:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6548 states, 6547 states have (on average 1.478081564075149) internal successors, (9677), 6547 states have internal predecessors, (9677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 9677 transitions. [2021-12-15 09:11:06,750 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 9677 transitions. Word has length 810 [2021-12-15 09:11:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:06,751 INFO L470 AbstractCegarLoop]: Abstraction has 6548 states and 9677 transitions. [2021-12-15 09:11:06,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.0) internal successors, (810), 2 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 9677 transitions. [2021-12-15 09:11:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2021-12-15 09:11:06,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:06,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:06,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 09:11:06,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1034633278, now seen corresponding path program 1 times [2021-12-15 09:11:06,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:06,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386940684] [2021-12-15 09:11:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:06,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:11:07,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:07,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386940684] [2021-12-15 09:11:07,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386940684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:07,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:07,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:11:07,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007092456] [2021-12-15 09:11:07,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:07,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:07,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:07,204 INFO L87 Difference]: Start difference. First operand 6548 states and 9677 transitions. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:09,873 INFO L93 Difference]: Finished difference Result 19638 states and 29026 transitions. [2021-12-15 09:11:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:09,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 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 816 [2021-12-15 09:11:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:09,910 INFO L225 Difference]: With dead ends: 19638 [2021-12-15 09:11:09,910 INFO L226 Difference]: Without dead ends: 13092 [2021-12-15 09:11:09,920 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:09,921 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 43 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:09,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1291 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 09:11:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13092 states. [2021-12-15 09:11:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 13092. [2021-12-15 09:11:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13092 states, 13091 states have (on average 1.4073027270643954) internal successors, (18423), 13091 states have internal predecessors, (18423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 18423 transitions. [2021-12-15 09:11:10,176 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 18423 transitions. Word has length 816 [2021-12-15 09:11:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:10,178 INFO L470 AbstractCegarLoop]: Abstraction has 13092 states and 18423 transitions. [2021-12-15 09:11:10,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 18423 transitions. [2021-12-15 09:11:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2021-12-15 09:11:10,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:10,205 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:10,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 09:11:10,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 179884476, now seen corresponding path program 1 times [2021-12-15 09:11:10,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:10,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234509093] [2021-12-15 09:11:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:10,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-15 09:11:10,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:10,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234509093] [2021-12-15 09:11:10,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234509093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:10,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:10,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:11:10,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794940972] [2021-12-15 09:11:10,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:10,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:10,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:10,524 INFO L87 Difference]: Start difference. First operand 13092 states and 18423 transitions. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 2 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:12,955 INFO L93 Difference]: Finished difference Result 39270 states and 55264 transitions. [2021-12-15 09:11:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 2 states have internal predecessors, (872), 0 states have call successors, (0), 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 885 [2021-12-15 09:11:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:13,014 INFO L225 Difference]: With dead ends: 39270 [2021-12-15 09:11:13,014 INFO L226 Difference]: Without dead ends: 26180 [2021-12-15 09:11:13,037 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:13,038 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 945 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:13,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 551 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 09:11:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26180 states. [2021-12-15 09:11:13,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26180 to 25362. [2021-12-15 09:11:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25362 states, 25361 states have (on average 1.2950987737076614) internal successors, (32845), 25361 states have internal predecessors, (32845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25362 states to 25362 states and 32845 transitions. [2021-12-15 09:11:13,428 INFO L78 Accepts]: Start accepts. Automaton has 25362 states and 32845 transitions. Word has length 885 [2021-12-15 09:11:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:13,430 INFO L470 AbstractCegarLoop]: Abstraction has 25362 states and 32845 transitions. [2021-12-15 09:11:13,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 2 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:13,434 INFO L276 IsEmpty]: Start isEmpty. Operand 25362 states and 32845 transitions. [2021-12-15 09:11:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2021-12-15 09:11:13,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:13,473 INFO L514 BasicCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:13,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 09:11:13,474 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:13,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash -934717491, now seen corresponding path program 1 times [2021-12-15 09:11:13,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:13,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890166982] [2021-12-15 09:11:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:13,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:11:13,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:13,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890166982] [2021-12-15 09:11:13,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890166982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:13,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:13,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:11:13,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64857117] [2021-12-15 09:11:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:13,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:13,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:13,743 INFO L87 Difference]: Start difference. First operand 25362 states and 32845 transitions. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 2 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:16,171 INFO L93 Difference]: Finished difference Result 51540 states and 66554 transitions. [2021-12-15 09:11:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 2 states have internal predecessors, (915), 0 states have call successors, (0), 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 915 [2021-12-15 09:11:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:16,219 INFO L225 Difference]: With dead ends: 51540 [2021-12-15 09:11:16,220 INFO L226 Difference]: Without dead ends: 26180 [2021-12-15 09:11:16,241 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:16,244 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 709 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:16,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 651 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 09:11:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26180 states. [2021-12-15 09:11:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26180 to 26180. [2021-12-15 09:11:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26180 states, 26179 states have (on average 1.2799190190610794) internal successors, (33507), 26179 states have internal predecessors, (33507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26180 states to 26180 states and 33507 transitions. [2021-12-15 09:11:16,561 INFO L78 Accepts]: Start accepts. Automaton has 26180 states and 33507 transitions. Word has length 915 [2021-12-15 09:11:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:16,561 INFO L470 AbstractCegarLoop]: Abstraction has 26180 states and 33507 transitions. [2021-12-15 09:11:16,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 2 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26180 states and 33507 transitions. [2021-12-15 09:11:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2021-12-15 09:11:16,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:16,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:16,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 09:11:16,603 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash -831315764, now seen corresponding path program 1 times [2021-12-15 09:11:16,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:16,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33663826] [2021-12-15 09:11:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:16,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-15 09:11:17,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:17,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33663826] [2021-12-15 09:11:17,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33663826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:17,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:17,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:11:17,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325547941] [2021-12-15 09:11:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:17,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:17,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:17,105 INFO L87 Difference]: Start difference. First operand 26180 states and 33507 transitions. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:19,436 INFO L93 Difference]: Finished difference Result 52358 states and 67012 transitions. [2021-12-15 09:11:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:19,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 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 930 [2021-12-15 09:11:19,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:19,483 INFO L225 Difference]: With dead ends: 52358 [2021-12-15 09:11:19,484 INFO L226 Difference]: Without dead ends: 26180 [2021-12-15 09:11:19,508 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:19,509 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 84 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:19,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1131 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:11:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26180 states. [2021-12-15 09:11:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26180 to 24544. [2021-12-15 09:11:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24544 states, 24543 states have (on average 1.2292303304404515) internal successors, (30169), 24543 states have internal predecessors, (30169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24544 states to 24544 states and 30169 transitions. [2021-12-15 09:11:19,877 INFO L78 Accepts]: Start accepts. Automaton has 24544 states and 30169 transitions. Word has length 930 [2021-12-15 09:11:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:19,879 INFO L470 AbstractCegarLoop]: Abstraction has 24544 states and 30169 transitions. [2021-12-15 09:11:19,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 24544 states and 30169 transitions. [2021-12-15 09:11:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2021-12-15 09:11:19,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:19,913 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:19,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 09:11:19,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1650442790, now seen corresponding path program 1 times [2021-12-15 09:11:19,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351215040] [2021-12-15 09:11:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:19,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-15 09:11:20,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:20,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351215040] [2021-12-15 09:11:20,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351215040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:20,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:20,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:11:20,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11572101] [2021-12-15 09:11:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:20,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:20,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:20,181 INFO L87 Difference]: Start difference. First operand 24544 states and 30169 transitions. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 2 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:22,845 INFO L93 Difference]: Finished difference Result 71990 states and 88380 transitions. [2021-12-15 09:11:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:22,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 2 states have internal predecessors, (842), 0 states have call successors, (0), 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 986 [2021-12-15 09:11:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:22,906 INFO L225 Difference]: With dead ends: 71990 [2021-12-15 09:11:22,906 INFO L226 Difference]: Without dead ends: 47448 [2021-12-15 09:11:22,923 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:22,924 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 988 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 1170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1170 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:22,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [988 Valid, 312 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1170 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-15 09:11:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47448 states. [2021-12-15 09:11:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47448 to 45812. [2021-12-15 09:11:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45812 states, 45811 states have (on average 1.183274759337277) internal successors, (54207), 45811 states have internal predecessors, (54207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45812 states to 45812 states and 54207 transitions. [2021-12-15 09:11:23,363 INFO L78 Accepts]: Start accepts. Automaton has 45812 states and 54207 transitions. Word has length 986 [2021-12-15 09:11:23,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:23,363 INFO L470 AbstractCegarLoop]: Abstraction has 45812 states and 54207 transitions. [2021-12-15 09:11:23,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 2 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:23,364 INFO L276 IsEmpty]: Start isEmpty. Operand 45812 states and 54207 transitions. [2021-12-15 09:11:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2021-12-15 09:11:23,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:23,399 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:23,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 09:11:23,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash 659039913, now seen corresponding path program 1 times [2021-12-15 09:11:23,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180500348] [2021-12-15 09:11:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:23,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-12-15 09:11:23,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180500348] [2021-12-15 09:11:23,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180500348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:23,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:23,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:11:23,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740103976] [2021-12-15 09:11:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:23,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:23,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:23,928 INFO L87 Difference]: Start difference. First operand 45812 states and 54207 transitions. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:26,337 INFO L93 Difference]: Finished difference Result 91622 states and 108412 transitions. [2021-12-15 09:11:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:26,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 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 1048 [2021-12-15 09:11:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:26,388 INFO L225 Difference]: With dead ends: 91622 [2021-12-15 09:11:26,388 INFO L226 Difference]: Without dead ends: 45812 [2021-12-15 09:11:26,422 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:26,423 INFO L933 BasicCegarLoop]: 1285 mSDtfsCounter, 82 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:26,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1294 Invalid, 3079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:11:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45812 states. [2021-12-15 09:11:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45812 to 44994. [2021-12-15 09:11:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44994 states, 44993 states have (on average 1.124508256839953) internal successors, (50595), 44993 states have internal predecessors, (50595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44994 states to 44994 states and 50595 transitions. [2021-12-15 09:11:26,929 INFO L78 Accepts]: Start accepts. Automaton has 44994 states and 50595 transitions. Word has length 1048 [2021-12-15 09:11:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:26,930 INFO L470 AbstractCegarLoop]: Abstraction has 44994 states and 50595 transitions. [2021-12-15 09:11:26,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 44994 states and 50595 transitions. [2021-12-15 09:11:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2021-12-15 09:11:26,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:26,969 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:26,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 09:11:26,969 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 932530545, now seen corresponding path program 1 times [2021-12-15 09:11:26,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:26,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956145097] [2021-12-15 09:11:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:26,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-15 09:11:27,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956145097] [2021-12-15 09:11:27,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956145097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:27,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:27,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:11:27,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755604013] [2021-12-15 09:11:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:27,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:27,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:27,294 INFO L87 Difference]: Start difference. First operand 44994 states and 50595 transitions. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:29,611 INFO L93 Difference]: Finished difference Result 89986 states and 101188 transitions. [2021-12-15 09:11:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:11:29,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 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 1132 [2021-12-15 09:11:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:29,658 INFO L225 Difference]: With dead ends: 89986 [2021-12-15 09:11:29,659 INFO L226 Difference]: Without dead ends: 44994 [2021-12-15 09:11:29,690 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:11:29,691 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 785 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:29,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1513 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-15 09:11:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44994 states. [2021-12-15 09:11:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44994 to 44994. [2021-12-15 09:11:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44994 states, 44993 states have (on average 1.1215744671393328) internal successors, (50463), 44993 states have internal predecessors, (50463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44994 states to 44994 states and 50463 transitions. [2021-12-15 09:11:30,419 INFO L78 Accepts]: Start accepts. Automaton has 44994 states and 50463 transitions. Word has length 1132 [2021-12-15 09:11:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:30,420 INFO L470 AbstractCegarLoop]: Abstraction has 44994 states and 50463 transitions. [2021-12-15 09:11:30,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 44994 states and 50463 transitions. [2021-12-15 09:11:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1185 [2021-12-15 09:11:30,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:30,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:30,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 09:11:30,462 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1723917283, now seen corresponding path program 1 times [2021-12-15 09:11:30,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:30,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276837069] [2021-12-15 09:11:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:30,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-15 09:11:30,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:30,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276837069] [2021-12-15 09:11:30,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276837069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:30,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:30,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 09:11:30,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991987463] [2021-12-15 09:11:30,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:30,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 09:11:30,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 09:11:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:11:30,945 INFO L87 Difference]: Start difference. First operand 44994 states and 50463 transitions. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:34,702 INFO L93 Difference]: Finished difference Result 101908 states and 114220 transitions. [2021-12-15 09:11:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 09:11:34,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 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 1184 [2021-12-15 09:11:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:34,766 INFO L225 Difference]: With dead ends: 101908 [2021-12-15 09:11:34,766 INFO L226 Difference]: Without dead ends: 56916 [2021-12-15 09:11:34,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-15 09:11:34,795 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 2339 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 3996 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 4439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:34,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2339 Valid, 3222 Invalid, 4439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3996 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-15 09:11:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56916 states. [2021-12-15 09:11:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56916 to 45812. [2021-12-15 09:11:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45812 states, 45811 states have (on average 1.1195346095915828) internal successors, (51287), 45811 states have internal predecessors, (51287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45812 states to 45812 states and 51287 transitions. [2021-12-15 09:11:35,420 INFO L78 Accepts]: Start accepts. Automaton has 45812 states and 51287 transitions. Word has length 1184 [2021-12-15 09:11:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:35,421 INFO L470 AbstractCegarLoop]: Abstraction has 45812 states and 51287 transitions. [2021-12-15 09:11:35,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 45812 states and 51287 transitions. [2021-12-15 09:11:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2021-12-15 09:11:35,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:35,463 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:35,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 09:11:35,464 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:35,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1220137284, now seen corresponding path program 1 times [2021-12-15 09:11:35,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:35,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293027831] [2021-12-15 09:11:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:35,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-15 09:11:36,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:36,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293027831] [2021-12-15 09:11:36,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293027831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:36,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:36,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 09:11:36,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919315640] [2021-12-15 09:11:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:36,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 09:11:36,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 09:11:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:11:36,104 INFO L87 Difference]: Start difference. First operand 45812 states and 51287 transitions. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:11:41,053 INFO L93 Difference]: Finished difference Result 104584 states and 116987 transitions. [2021-12-15 09:11:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 09:11:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 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 1199 [2021-12-15 09:11:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:11:41,116 INFO L225 Difference]: With dead ends: 104584 [2021-12-15 09:11:41,117 INFO L226 Difference]: Without dead ends: 59592 [2021-12-15 09:11:41,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-15 09:11:41,148 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 2956 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 7939 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 8412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 7939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-15 09:11:41,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2956 Valid, 2246 Invalid, 8412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 7939 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-15 09:11:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59592 states. [2021-12-15 09:11:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59592 to 48266. [2021-12-15 09:11:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48266 states, 48265 states have (on average 1.114451465865534) internal successors, (53789), 48265 states have internal predecessors, (53789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48266 states to 48266 states and 53789 transitions. [2021-12-15 09:11:41,813 INFO L78 Accepts]: Start accepts. Automaton has 48266 states and 53789 transitions. Word has length 1199 [2021-12-15 09:11:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:11:41,814 INFO L470 AbstractCegarLoop]: Abstraction has 48266 states and 53789 transitions. [2021-12-15 09:11:41,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:11:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 48266 states and 53789 transitions. [2021-12-15 09:11:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2021-12-15 09:11:41,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:11:41,845 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:11:41,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 09:11:41,845 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:11:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:11:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -668795344, now seen corresponding path program 1 times [2021-12-15 09:11:41,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:11:41,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884386408] [2021-12-15 09:11:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:11:41,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:11:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:11:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-15 09:11:42,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:11:42,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884386408] [2021-12-15 09:11:42,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884386408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:11:42,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:11:42,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:11:42,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047785663] [2021-12-15 09:11:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:11:42,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:11:42,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:11:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:11:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:11:42,306 INFO L87 Difference]: Start difference. First operand 48266 states and 53789 transitions. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)