./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77bdf1fd1feb16a304959a2005739d40d4ccd53f6bcac88343734528a26d2146 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:23:21,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:23:21,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:23:21,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:23:21,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:23:21,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:23:21,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:23:21,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:23:21,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:23:21,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:23:21,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:23:21,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:23:21,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:23:21,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:23:21,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:23:21,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:23:21,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:23:21,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:23:21,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:23:21,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:23:21,480 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:23:21,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:23:21,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:23:21,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:23:21,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:23:21,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:23:21,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:23:21,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:23:21,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:23:21,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:23:21,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:23:21,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:23:21,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:23:21,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:23:21,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:23:21,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:23:21,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:23:21,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:23:21,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:23:21,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:23:21,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:23:21,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:23:21,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:23:21,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:23:21,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:23:21,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:23:21,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:23:21,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:23:21,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:23:21,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:23:21,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:23:21,537 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:23:21,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:23:21,538 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:23:21,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:23:21,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:23:21,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:23:21,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:23:21,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:23:21,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:23:21,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:23:21,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:23:21,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:23:21,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:23:21,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:23:21,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:23:21,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:23:21,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:23:21,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:23:21,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:23:21,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:23:21,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:23:21,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:23:21,548 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:23:21,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:23:21,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:23:21,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77bdf1fd1feb16a304959a2005739d40d4ccd53f6bcac88343734528a26d2146 [2022-07-21 05:23:21,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:23:21,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:23:21,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:23:21,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:23:21,885 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:23:21,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-07-21 05:23:21,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ad17a74/8b3e6631baf44d47893d7c251d193d6e/FLAG730f11a1f [2022-07-21 05:23:22,498 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:23:22,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-07-21 05:23:22,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ad17a74/8b3e6631baf44d47893d7c251d193d6e/FLAG730f11a1f [2022-07-21 05:23:22,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ad17a74/8b3e6631baf44d47893d7c251d193d6e [2022-07-21 05:23:22,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:23:22,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:23:22,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:23:22,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:23:22,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:23:22,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:23:22" (1/1) ... [2022-07-21 05:23:22,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f2dc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:22, skipping insertion in model container [2022-07-21 05:23:22,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:23:22" (1/1) ... [2022-07-21 05:23:22,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:23:22,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:23:23,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c[60917,60930] [2022-07-21 05:23:23,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:23:23,315 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:23:23,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c[60917,60930] [2022-07-21 05:23:23,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:23:23,452 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:23:23,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23 WrapperNode [2022-07-21 05:23:23,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:23:23,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:23:23,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:23:23,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:23:23,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,571 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2051 [2022-07-21 05:23:23,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:23:23,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:23:23,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:23:23,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:23:23,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:23:23,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:23:23,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:23:23,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:23:23,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (1/1) ... [2022-07-21 05:23:23,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:23:23,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:23:23,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:23:23,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:23:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:23:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:23:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:23:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:23:24,011 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:23:24,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:23:25,405 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:23:25,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:23:25,419 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:23:25,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:23:25 BoogieIcfgContainer [2022-07-21 05:23:25,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:23:25,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:23:25,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:23:25,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:23:25,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:23:22" (1/3) ... [2022-07-21 05:23:25,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e76e158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:23:25, skipping insertion in model container [2022-07-21 05:23:25,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:23:23" (2/3) ... [2022-07-21 05:23:25,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e76e158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:23:25, skipping insertion in model container [2022-07-21 05:23:25,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:23:25" (3/3) ... [2022-07-21 05:23:25,431 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-07-21 05:23:25,444 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:23:25,445 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:23:25,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:23:25,513 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15680cf1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76c179d3 [2022-07-21 05:23:25,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:23:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 704 states have (on average 1.8508522727272727) internal successors, (1303), 705 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:25,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 05:23:25,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:25,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:25,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -745157910, now seen corresponding path program 1 times [2022-07-21 05:23:25,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:25,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650118127] [2022-07-21 05:23:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:25,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:25,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:25,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650118127] [2022-07-21 05:23:25,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650118127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:25,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:25,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 05:23:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722886700] [2022-07-21 05:23:25,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:25,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 05:23:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 05:23:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:23:25,998 INFO L87 Difference]: Start difference. First operand has 706 states, 704 states have (on average 1.8508522727272727) internal successors, (1303), 705 states have internal predecessors, (1303), 0 states have call successors, (0), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:26,074 INFO L93 Difference]: Finished difference Result 867 states and 1580 transitions. [2022-07-21 05:23:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 05:23:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-21 05:23:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:26,098 INFO L225 Difference]: With dead ends: 867 [2022-07-21 05:23:26,098 INFO L226 Difference]: Without dead ends: 702 [2022-07-21 05:23:26,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:23:26,106 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:26,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-21 05:23:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-07-21 05:23:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.848787446504993) internal successors, (1296), 701 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1296 transitions. [2022-07-21 05:23:26,205 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1296 transitions. Word has length 153 [2022-07-21 05:23:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:26,207 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1296 transitions. [2022-07-21 05:23:26,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1296 transitions. [2022-07-21 05:23:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 05:23:26,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:26,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:26,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:23:26,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1254631000, now seen corresponding path program 1 times [2022-07-21 05:23:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277959334] [2022-07-21 05:23:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:26,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:26,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277959334] [2022-07-21 05:23:26,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277959334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:26,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:26,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:23:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794349209] [2022-07-21 05:23:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:23:26,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:23:26,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:23:26,475 INFO L87 Difference]: Start difference. First operand 702 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:26,643 INFO L93 Difference]: Finished difference Result 862 states and 1570 transitions. [2022-07-21 05:23:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:23:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-21 05:23:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:26,648 INFO L225 Difference]: With dead ends: 862 [2022-07-21 05:23:26,648 INFO L226 Difference]: Without dead ends: 702 [2022-07-21 05:23:26,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:23:26,650 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 3 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:26,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5113 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:23:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-21 05:23:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-07-21 05:23:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.7631954350927246) internal successors, (1236), 701 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1236 transitions. [2022-07-21 05:23:26,686 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1236 transitions. Word has length 153 [2022-07-21 05:23:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:26,686 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1236 transitions. [2022-07-21 05:23:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1236 transitions. [2022-07-21 05:23:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 05:23:26,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:26,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:23:26,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1674803025, now seen corresponding path program 1 times [2022-07-21 05:23:26,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:26,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557322728] [2022-07-21 05:23:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:26,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:26,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557322728] [2022-07-21 05:23:26,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557322728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:26,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:26,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988103286] [2022-07-21 05:23:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:26,932 INFO L87 Difference]: Start difference. First operand 702 states and 1236 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:26,989 INFO L93 Difference]: Finished difference Result 1001 states and 1751 transitions. [2022-07-21 05:23:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2022-07-21 05:23:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:26,997 INFO L225 Difference]: With dead ends: 1001 [2022-07-21 05:23:26,997 INFO L226 Difference]: Without dead ends: 845 [2022-07-21 05:23:27,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,006 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 237 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:27,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2407 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-21 05:23:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2022-07-21 05:23:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 1.7517814726840855) internal successors, (1475), 842 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1475 transitions. [2022-07-21 05:23:27,038 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1475 transitions. Word has length 212 [2022-07-21 05:23:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:27,039 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1475 transitions. [2022-07-21 05:23:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1475 transitions. [2022-07-21 05:23:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-21 05:23:27,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:27,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:27,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:23:27,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1449767861, now seen corresponding path program 1 times [2022-07-21 05:23:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:27,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379539812] [2022-07-21 05:23:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:27,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:27,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379539812] [2022-07-21 05:23:27,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379539812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:27,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:27,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146350867] [2022-07-21 05:23:27,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:27,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:27,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,207 INFO L87 Difference]: Start difference. First operand 843 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:27,238 INFO L93 Difference]: Finished difference Result 1415 states and 2451 transitions. [2022-07-21 05:23:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2022-07-21 05:23:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:27,244 INFO L225 Difference]: With dead ends: 1415 [2022-07-21 05:23:27,244 INFO L226 Difference]: Without dead ends: 1118 [2022-07-21 05:23:27,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,254 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 237 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:27,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-07-21 05:23:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1116. [2022-07-21 05:23:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.7390134529147983) internal successors, (1939), 1115 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1939 transitions. [2022-07-21 05:23:27,281 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1939 transitions. Word has length 216 [2022-07-21 05:23:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:27,281 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1939 transitions. [2022-07-21 05:23:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1939 transitions. [2022-07-21 05:23:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-21 05:23:27,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:27,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:27,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:23:27,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:27,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1203576295, now seen corresponding path program 1 times [2022-07-21 05:23:27,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:27,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420126849] [2022-07-21 05:23:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:27,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:27,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420126849] [2022-07-21 05:23:27,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420126849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:27,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:27,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991476035] [2022-07-21 05:23:27,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:27,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:27,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:27,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,410 INFO L87 Difference]: Start difference. First operand 1116 states and 1939 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:27,463 INFO L93 Difference]: Finished difference Result 2212 states and 3801 transitions. [2022-07-21 05:23:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:27,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-07-21 05:23:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:27,471 INFO L225 Difference]: With dead ends: 2212 [2022-07-21 05:23:27,471 INFO L226 Difference]: Without dead ends: 1642 [2022-07-21 05:23:27,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,473 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 229 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:27,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-07-21 05:23:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1640. [2022-07-21 05:23:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 1.7223917022574742) internal successors, (2823), 1639 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2823 transitions. [2022-07-21 05:23:27,514 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2823 transitions. Word has length 220 [2022-07-21 05:23:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:27,515 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2823 transitions. [2022-07-21 05:23:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2823 transitions. [2022-07-21 05:23:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-21 05:23:27,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:27,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:27,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:23:27,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:27,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1763181181, now seen corresponding path program 1 times [2022-07-21 05:23:27,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:27,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624811747] [2022-07-21 05:23:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:27,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:27,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:27,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624811747] [2022-07-21 05:23:27,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624811747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:27,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:27,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202629072] [2022-07-21 05:23:27,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:27,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:27,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,670 INFO L87 Difference]: Start difference. First operand 1640 states and 2823 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:27,722 INFO L93 Difference]: Finished difference Result 3740 states and 6369 transitions. [2022-07-21 05:23:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2022-07-21 05:23:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:27,733 INFO L225 Difference]: With dead ends: 3740 [2022-07-21 05:23:27,734 INFO L226 Difference]: Without dead ends: 2646 [2022-07-21 05:23:27,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,738 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 221 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:27,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2417 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-21 05:23:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2644. [2022-07-21 05:23:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2643 states have (on average 1.7037457434733259) internal successors, (4503), 2643 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 4503 transitions. [2022-07-21 05:23:27,816 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 4503 transitions. Word has length 224 [2022-07-21 05:23:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:27,817 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 4503 transitions. [2022-07-21 05:23:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 4503 transitions. [2022-07-21 05:23:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 05:23:27,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:27,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:23:27,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1428296929, now seen corresponding path program 1 times [2022-07-21 05:23:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:27,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818110045] [2022-07-21 05:23:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:27,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818110045] [2022-07-21 05:23:27,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818110045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:27,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:27,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30114905] [2022-07-21 05:23:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:27,960 INFO L87 Difference]: Start difference. First operand 2644 states and 4503 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:28,037 INFO L93 Difference]: Finished difference Result 6664 states and 11241 transitions. [2022-07-21 05:23:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2022-07-21 05:23:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:28,078 INFO L225 Difference]: With dead ends: 6664 [2022-07-21 05:23:28,078 INFO L226 Difference]: Without dead ends: 4566 [2022-07-21 05:23:28,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:28,082 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 213 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:28,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2418 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:28,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2022-07-21 05:23:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4564. [2022-07-21 05:23:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4563 states have (on average 1.6846373000219155) internal successors, (7687), 4563 states have internal predecessors, (7687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7687 transitions. [2022-07-21 05:23:28,210 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7687 transitions. Word has length 228 [2022-07-21 05:23:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:28,211 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 7687 transitions. [2022-07-21 05:23:28,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7687 transitions. [2022-07-21 05:23:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 05:23:28,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:28,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:23:28,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1256580795, now seen corresponding path program 1 times [2022-07-21 05:23:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:28,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054601899] [2022-07-21 05:23:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:28,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:28,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054601899] [2022-07-21 05:23:28,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054601899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:28,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:28,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:23:28,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091650574] [2022-07-21 05:23:28,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:28,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:23:28,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:28,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:23:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:23:28,361 INFO L87 Difference]: Start difference. First operand 4564 states and 7687 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:29,085 INFO L93 Difference]: Finished difference Result 27368 states and 46209 transitions. [2022-07-21 05:23:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:23:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-07-21 05:23:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:29,165 INFO L225 Difference]: With dead ends: 27368 [2022-07-21 05:23:29,165 INFO L226 Difference]: Without dead ends: 23350 [2022-07-21 05:23:29,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:23:29,180 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 4454 mSDsluCounter, 7456 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4454 SdHoareTripleChecker+Valid, 8676 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:29,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4454 Valid, 8676 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:23:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23350 states. [2022-07-21 05:23:29,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23350 to 8423. [2022-07-21 05:23:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 1.678104963191641) internal successors, (14133), 8422 states have internal predecessors, (14133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 14133 transitions. [2022-07-21 05:23:29,670 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 14133 transitions. Word has length 232 [2022-07-21 05:23:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:29,671 INFO L495 AbstractCegarLoop]: Abstraction has 8423 states and 14133 transitions. [2022-07-21 05:23:29,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 14133 transitions. [2022-07-21 05:23:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 05:23:29,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:29,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:29,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:23:29,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1967080448, now seen corresponding path program 1 times [2022-07-21 05:23:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:29,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526162450] [2022-07-21 05:23:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:29,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526162450] [2022-07-21 05:23:29,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526162450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:29,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:29,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:23:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731612914] [2022-07-21 05:23:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:29,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:23:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:23:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:23:29,819 INFO L87 Difference]: Start difference. First operand 8423 states and 14133 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:30,295 INFO L93 Difference]: Finished difference Result 24532 states and 41276 transitions. [2022-07-21 05:23:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:23:30,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-21 05:23:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:30,340 INFO L225 Difference]: With dead ends: 24532 [2022-07-21 05:23:30,341 INFO L226 Difference]: Without dead ends: 16655 [2022-07-21 05:23:30,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:23:30,358 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 776 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:30,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 3689 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16655 states. [2022-07-21 05:23:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16655 to 12506. [2022-07-21 05:23:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.6790083966413434) internal successors, (20996), 12505 states have internal predecessors, (20996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 20996 transitions. [2022-07-21 05:23:30,842 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 20996 transitions. Word has length 233 [2022-07-21 05:23:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:30,842 INFO L495 AbstractCegarLoop]: Abstraction has 12506 states and 20996 transitions. [2022-07-21 05:23:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 20996 transitions. [2022-07-21 05:23:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 05:23:30,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:30,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:30,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:23:30,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash 159533448, now seen corresponding path program 1 times [2022-07-21 05:23:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:30,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263182251] [2022-07-21 05:23:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263182251] [2022-07-21 05:23:30,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263182251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:30,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:30,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180014677] [2022-07-21 05:23:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:30,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:30,964 INFO L87 Difference]: Start difference. First operand 12506 states and 20996 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:31,370 INFO L93 Difference]: Finished difference Result 25097 states and 42142 transitions. [2022-07-21 05:23:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:31,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-21 05:23:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:31,412 INFO L225 Difference]: With dead ends: 25097 [2022-07-21 05:23:31,412 INFO L226 Difference]: Without dead ends: 18751 [2022-07-21 05:23:31,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:31,422 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 214 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2477 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18751 states. [2022-07-21 05:23:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18751 to 18749. [2022-07-21 05:23:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18749 states, 18748 states have (on average 1.6717516535097077) internal successors, (31342), 18748 states have internal predecessors, (31342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18749 states to 18749 states and 31342 transitions. [2022-07-21 05:23:32,044 INFO L78 Accepts]: Start accepts. Automaton has 18749 states and 31342 transitions. Word has length 233 [2022-07-21 05:23:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:32,045 INFO L495 AbstractCegarLoop]: Abstraction has 18749 states and 31342 transitions. [2022-07-21 05:23:32,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states and 31342 transitions. [2022-07-21 05:23:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 05:23:32,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:32,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:32,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:23:32,054 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:32,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:32,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2066182408, now seen corresponding path program 1 times [2022-07-21 05:23:32,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:32,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113361133] [2022-07-21 05:23:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:32,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:32,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:32,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113361133] [2022-07-21 05:23:32,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113361133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:32,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:32,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131513167] [2022-07-21 05:23:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:32,153 INFO L87 Difference]: Start difference. First operand 18749 states and 31342 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:32,756 INFO L93 Difference]: Finished difference Result 35049 states and 58656 transitions. [2022-07-21 05:23:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-21 05:23:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:32,820 INFO L225 Difference]: With dead ends: 35049 [2022-07-21 05:23:32,821 INFO L226 Difference]: Without dead ends: 25707 [2022-07-21 05:23:32,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:32,849 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 222 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:32,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2522 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25707 states. [2022-07-21 05:23:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25707 to 25705. [2022-07-21 05:23:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25705 states, 25704 states have (on average 1.6654217242452536) internal successors, (42808), 25704 states have internal predecessors, (42808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25705 states to 25705 states and 42808 transitions. [2022-07-21 05:23:33,763 INFO L78 Accepts]: Start accepts. Automaton has 25705 states and 42808 transitions. Word has length 233 [2022-07-21 05:23:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:33,764 INFO L495 AbstractCegarLoop]: Abstraction has 25705 states and 42808 transitions. [2022-07-21 05:23:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 25705 states and 42808 transitions. [2022-07-21 05:23:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 05:23:33,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:33,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:33,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:23:33,771 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash 116201608, now seen corresponding path program 1 times [2022-07-21 05:23:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:33,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823989195] [2022-07-21 05:23:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:33,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:33,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:33,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823989195] [2022-07-21 05:23:33,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823989195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:33,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:33,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:33,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112070960] [2022-07-21 05:23:33,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:33,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:33,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:33,857 INFO L87 Difference]: Start difference. First operand 25705 states and 42808 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:34,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:34,442 INFO L93 Difference]: Finished difference Result 48749 states and 81330 transitions. [2022-07-21 05:23:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-21 05:23:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:34,528 INFO L225 Difference]: With dead ends: 48749 [2022-07-21 05:23:34,528 INFO L226 Difference]: Without dead ends: 35549 [2022-07-21 05:23:34,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:34,551 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 230 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:34,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2567 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35549 states. [2022-07-21 05:23:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35549 to 35547. [2022-07-21 05:23:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35547 states, 35546 states have (on average 1.6612277049457043) internal successors, (59050), 35546 states have internal predecessors, (59050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35547 states to 35547 states and 59050 transitions. [2022-07-21 05:23:35,568 INFO L78 Accepts]: Start accepts. Automaton has 35547 states and 59050 transitions. Word has length 233 [2022-07-21 05:23:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:35,569 INFO L495 AbstractCegarLoop]: Abstraction has 35547 states and 59050 transitions. [2022-07-21 05:23:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 35547 states and 59050 transitions. [2022-07-21 05:23:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 05:23:35,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:35,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:23:35,574 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:35,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1001177080, now seen corresponding path program 1 times [2022-07-21 05:23:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:35,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948571791] [2022-07-21 05:23:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:35,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:35,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948571791] [2022-07-21 05:23:35,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948571791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:35,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:35,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445185184] [2022-07-21 05:23:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:35,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:35,685 INFO L87 Difference]: Start difference. First operand 35547 states and 59050 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:36,577 INFO L93 Difference]: Finished difference Result 68005 states and 113160 transitions. [2022-07-21 05:23:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-21 05:23:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:36,692 INFO L225 Difference]: With dead ends: 68005 [2022-07-21 05:23:36,693 INFO L226 Difference]: Without dead ends: 49501 [2022-07-21 05:23:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:36,724 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 238 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:36,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 2612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49501 states. [2022-07-21 05:23:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49501 to 49499. [2022-07-21 05:23:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49499 states, 49498 states have (on average 1.6563901571780677) internal successors, (81988), 49498 states have internal predecessors, (81988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49499 states to 49499 states and 81988 transitions. [2022-07-21 05:23:38,039 INFO L78 Accepts]: Start accepts. Automaton has 49499 states and 81988 transitions. Word has length 233 [2022-07-21 05:23:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:38,040 INFO L495 AbstractCegarLoop]: Abstraction has 49499 states and 81988 transitions. [2022-07-21 05:23:38,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49499 states and 81988 transitions. [2022-07-21 05:23:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 05:23:38,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:38,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:23:38,045 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:38,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1255794568, now seen corresponding path program 1 times [2022-07-21 05:23:38,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:38,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261340513] [2022-07-21 05:23:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:38,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:38,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:38,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261340513] [2022-07-21 05:23:38,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261340513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:38,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:38,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:23:38,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102780957] [2022-07-21 05:23:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:38,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:23:38,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:23:38,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:38,158 INFO L87 Difference]: Start difference. First operand 49499 states and 81988 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:39,610 INFO L93 Difference]: Finished difference Result 109735 states and 182548 transitions. [2022-07-21 05:23:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:23:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-21 05:23:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:39,739 INFO L225 Difference]: With dead ends: 109735 [2022-07-21 05:23:39,739 INFO L226 Difference]: Without dead ends: 75497 [2022-07-21 05:23:39,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:23:39,782 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 246 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:39,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2648 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75497 states. [2022-07-21 05:23:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75497 to 75495. [2022-07-21 05:23:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75495 states, 75494 states have (on average 1.6524889395183724) internal successors, (124753), 75494 states have internal predecessors, (124753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75495 states to 75495 states and 124753 transitions. [2022-07-21 05:23:41,900 INFO L78 Accepts]: Start accepts. Automaton has 75495 states and 124753 transitions. Word has length 233 [2022-07-21 05:23:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:41,900 INFO L495 AbstractCegarLoop]: Abstraction has 75495 states and 124753 transitions. [2022-07-21 05:23:41,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 75495 states and 124753 transitions. [2022-07-21 05:23:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 05:23:41,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:41,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:41,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:23:41,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1347640466, now seen corresponding path program 1 times [2022-07-21 05:23:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:41,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330021665] [2022-07-21 05:23:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330021665] [2022-07-21 05:23:41,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330021665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:41,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:41,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:23:41,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918334073] [2022-07-21 05:23:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:41,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:23:41,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:23:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:23:41,996 INFO L87 Difference]: Start difference. First operand 75495 states and 124753 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:45,522 INFO L93 Difference]: Finished difference Result 248936 states and 411966 transitions. [2022-07-21 05:23:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:23:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2022-07-21 05:23:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:45,863 INFO L225 Difference]: With dead ends: 248936 [2022-07-21 05:23:45,863 INFO L226 Difference]: Without dead ends: 174053 [2022-07-21 05:23:45,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:23:45,938 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 774 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:45,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 3737 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:23:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174053 states. [2022-07-21 05:23:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174053 to 124505. [2022-07-21 05:23:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124505 states, 124504 states have (on average 1.6479711495213005) internal successors, (205179), 124504 states have internal predecessors, (205179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124505 states to 124505 states and 205179 transitions. [2022-07-21 05:23:50,065 INFO L78 Accepts]: Start accepts. Automaton has 124505 states and 205179 transitions. Word has length 234 [2022-07-21 05:23:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:50,066 INFO L495 AbstractCegarLoop]: Abstraction has 124505 states and 205179 transitions. [2022-07-21 05:23:50,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 124505 states and 205179 transitions. [2022-07-21 05:23:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 05:23:50,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:50,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:23:50,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:23:50,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:50,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1193778039, now seen corresponding path program 1 times [2022-07-21 05:23:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:50,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91056002] [2022-07-21 05:23:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:23:50,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:50,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91056002] [2022-07-21 05:23:50,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91056002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:50,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:50,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:23:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161017581] [2022-07-21 05:23:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:50,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:23:50,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:50,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:23:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:23:50,210 INFO L87 Difference]: Start difference. First operand 124505 states and 205179 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:23:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:56,964 INFO L93 Difference]: Finished difference Result 410480 states and 677550 transitions. [2022-07-21 05:23:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:23:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-07-21 05:23:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:57,792 INFO L225 Difference]: With dead ends: 410480 [2022-07-21 05:23:57,792 INFO L226 Difference]: Without dead ends: 286587 [2022-07-21 05:23:57,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:23:57,897 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 772 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:57,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3785 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:23:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286587 states.