./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label06.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 b8e390e3329fd730c72061af7f4f756de3cffbc4334952b16b06779e5db77927 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:23:56,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:23:56,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:23:56,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:23:56,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:23:56,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:23:56,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:23:56,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:23:56,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:23:56,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:23:56,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:23:56,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:23:56,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:23:56,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:23:56,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:23:56,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:23:56,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:23:56,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:23:56,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:23:56,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:23:56,474 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:23:56,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:23:56,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:23:56,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:23:56,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:23:56,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:23:56,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:23:56,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:23:56,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:23:56,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:23:56,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:23:56,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:23:56,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:23:56,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:23:56,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:23:56,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:23:56,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:23:56,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:23:56,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:23:56,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:23:56,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:23:56,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:23:56,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:23:56,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:23:56,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:23:56,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:23:56,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:23:56,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:23:56,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:23:56,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:23:56,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:23:56,523 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:23:56,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:23:56,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:23:56,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:23:56,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:23:56,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:23:56,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:23:56,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:23:56,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:23:56,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:23:56,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:23:56,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:23:56,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:23:56,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:23:56,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:23:56,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:23:56,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:23:56,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:23:56,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:23:56,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:23:56,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:23:56,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:23:56,528 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:23:56,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:23:56,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:23:56,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e390e3329fd730c72061af7f4f756de3cffbc4334952b16b06779e5db77927 [2022-07-22 12:23:56,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:23:56,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:23:56,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:23:56,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:23:56,815 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:23:56,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2022-07-22 12:23:56,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b91d4165/5d9a7ecb41cf446f8d43666b7ed2809e/FLAG3dbefa089 [2022-07-22 12:23:57,556 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:23:57,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2022-07-22 12:23:57,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b91d4165/5d9a7ecb41cf446f8d43666b7ed2809e/FLAG3dbefa089 [2022-07-22 12:23:57,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b91d4165/5d9a7ecb41cf446f8d43666b7ed2809e [2022-07-22 12:23:57,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:23:57,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:23:57,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:23:57,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:23:57,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:23:57,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:23:57" (1/1) ... [2022-07-22 12:23:57,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27113239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:57, skipping insertion in model container [2022-07-22 12:23:57,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:23:57" (1/1) ... [2022-07-22 12:23:57,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:23:57,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:23:58,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c[3178,3191] [2022-07-22 12:23:58,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:23:58,976 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:23:59,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c[3178,3191] [2022-07-22 12:23:59,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:23:59,470 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:23:59,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59 WrapperNode [2022-07-22 12:23:59,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:23:59,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:23:59,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:23:59,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:23:59,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:23:59,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:23:59,915 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-22 12:23:59,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:23:59,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:23:59,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:23:59,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:23:59,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:23:59,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:23:59,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:23:59,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:24:00,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:24:00,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:24:00,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:24:00,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:24:00,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:24:00,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:24:00,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:24:00,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (1/1) ... [2022-07-22 12:24:00,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:24:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:24:00,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:24:00,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:24:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:24:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:24:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:24:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:24:00,431 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:24:00,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:24:03,780 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:24:03,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:24:03,797 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:24:03,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:24:03 BoogieIcfgContainer [2022-07-22 12:24:03,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:24:03,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:24:03,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:24:03,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:24:03,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:23:57" (1/3) ... [2022-07-22 12:24:03,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4373e0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:24:03, skipping insertion in model container [2022-07-22 12:24:03,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:23:59" (2/3) ... [2022-07-22 12:24:03,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4373e0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:24:03, skipping insertion in model container [2022-07-22 12:24:03,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:24:03" (3/3) ... [2022-07-22 12:24:03,808 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label06.c [2022-07-22 12:24:03,820 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:24:03,820 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:24:03,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:24:03,891 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@10640388, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37884a6 [2022-07-22 12:24:03,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:24:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-22 12:24:03,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:03,905 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] [2022-07-22 12:24:03,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2022-07-22 12:24:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307424197] [2022-07-22 12:24:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:24:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307424197] [2022-07-22 12:24:04,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307424197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:04,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:04,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:24:04,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337227655] [2022-07-22 12:24:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:04,162 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:07,579 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-22 12:24:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:07,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-07-22 12:24:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:07,600 INFO L225 Difference]: With dead ends: 2388 [2022-07-22 12:24:07,601 INFO L226 Difference]: Without dead ends: 1506 [2022-07-22 12:24:07,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:07,610 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 874 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:07,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 12:24:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-22 12:24:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-22 12:24:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2022-07-22 12:24:07,699 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 23 [2022-07-22 12:24:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:07,699 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2022-07-22 12:24:07,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2022-07-22 12:24:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 12:24:07,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:07,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:07,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:24:07,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1310443010, now seen corresponding path program 1 times [2022-07-22 12:24:07,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:07,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71941712] [2022-07-22 12:24:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:07,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:24:07,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71941712] [2022-07-22 12:24:07,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71941712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:07,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:07,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:24:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090701558] [2022-07-22 12:24:07,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:07,819 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:10,719 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2022-07-22 12:24:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:10,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-22 12:24:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:10,729 INFO L225 Difference]: With dead ends: 3761 [2022-07-22 12:24:10,730 INFO L226 Difference]: Without dead ends: 2257 [2022-07-22 12:24:10,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:10,734 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:10,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:24:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-22 12:24:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-07-22 12:24:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2022-07-22 12:24:10,771 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 92 [2022-07-22 12:24:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:10,773 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2022-07-22 12:24:10,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2022-07-22 12:24:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 12:24:10,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:10,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:24:10,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1915116317, now seen corresponding path program 1 times [2022-07-22 12:24:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:10,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487685650] [2022-07-22 12:24:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 12:24:10,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:10,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487685650] [2022-07-22 12:24:10,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487685650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:10,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:10,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:24:10,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171668260] [2022-07-22 12:24:10,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:10,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:10,913 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:13,962 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2022-07-22 12:24:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 94 [2022-07-22 12:24:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:13,979 INFO L225 Difference]: With dead ends: 6765 [2022-07-22 12:24:13,979 INFO L226 Difference]: Without dead ends: 4510 [2022-07-22 12:24:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:13,983 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 618 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 12:24:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-07-22 12:24:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-07-22 12:24:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.2929696163229096) internal successors, (5830), 4509 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5830 transitions. [2022-07-22 12:24:14,048 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5830 transitions. Word has length 94 [2022-07-22 12:24:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:14,049 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5830 transitions. [2022-07-22 12:24:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5830 transitions. [2022-07-22 12:24:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 12:24:14,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:14,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:14,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:24:14,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1286630802, now seen corresponding path program 1 times [2022-07-22 12:24:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:14,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129573594] [2022-07-22 12:24:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:24:14,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129573594] [2022-07-22 12:24:14,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129573594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:14,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:14,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073155837] [2022-07-22 12:24:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:14,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:24:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:24:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:24:14,146 INFO L87 Difference]: Start difference. First operand 4510 states and 5830 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:18,009 INFO L93 Difference]: Finished difference Result 14275 states and 18284 transitions. [2022-07-22 12:24:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:24:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-07-22 12:24:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:18,041 INFO L225 Difference]: With dead ends: 14275 [2022-07-22 12:24:18,041 INFO L226 Difference]: Without dead ends: 9767 [2022-07-22 12:24:18,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:24:18,048 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:18,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 12:24:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-22 12:24:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-07-22 12:24:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.255785377841491) internal successors, (12264), 9766 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12264 transitions. [2022-07-22 12:24:18,194 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12264 transitions. Word has length 100 [2022-07-22 12:24:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:18,195 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12264 transitions. [2022-07-22 12:24:18,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:18,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12264 transitions. [2022-07-22 12:24:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 12:24:18,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:18,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:24:18,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:18,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1224781952, now seen corresponding path program 1 times [2022-07-22 12:24:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:18,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001079912] [2022-07-22 12:24:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:24:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001079912] [2022-07-22 12:24:18,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001079912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:18,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:18,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:18,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144090400] [2022-07-22 12:24:18,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:18,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:24:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:24:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:24:18,333 INFO L87 Difference]: Start difference. First operand 9767 states and 12264 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:21,237 INFO L93 Difference]: Finished difference Result 21822 states and 27290 transitions. [2022-07-22 12:24:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:24:21,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-22 12:24:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:21,276 INFO L225 Difference]: With dead ends: 21822 [2022-07-22 12:24:21,277 INFO L226 Difference]: Without dead ends: 12771 [2022-07-22 12:24:21,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:24:21,291 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:21,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 616 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3680 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:24:21,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2022-07-22 12:24:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2022-07-22 12:24:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2022-07-22 12:24:21,574 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 171 [2022-07-22 12:24:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:21,576 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2022-07-22 12:24:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2022-07-22 12:24:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-22 12:24:21,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:21,582 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:24:21,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 685432098, now seen corresponding path program 1 times [2022-07-22 12:24:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:21,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380659670] [2022-07-22 12:24:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:21,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 12:24:21,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:21,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380659670] [2022-07-22 12:24:21,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380659670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:21,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:21,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824704691] [2022-07-22 12:24:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:21,754 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:24,499 INFO L93 Difference]: Finished difference Result 27793 states and 34552 transitions. [2022-07-22 12:24:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 [2022-07-22 12:24:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:24,542 INFO L225 Difference]: With dead ends: 27793 [2022-07-22 12:24:24,556 INFO L226 Difference]: Without dead ends: 16526 [2022-07-22 12:24:24,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:24,603 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 763 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:24,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 495 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:24:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-07-22 12:24:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 12020. [2022-07-22 12:24:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2022-07-22 12:24:24,838 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 235 [2022-07-22 12:24:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:24,839 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2022-07-22 12:24:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2022-07-22 12:24:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-22 12:24:24,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:24,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:24:24,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash 855237449, now seen corresponding path program 1 times [2022-07-22 12:24:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:24,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499734310] [2022-07-22 12:24:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 12:24:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:24,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499734310] [2022-07-22 12:24:24,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499734310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:24,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:24,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:24:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816272637] [2022-07-22 12:24:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:24,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:24,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:24,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:24,946 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:27,493 INFO L93 Difference]: Finished difference Result 31550 states and 38845 transitions. [2022-07-22 12:24:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:27,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 236 [2022-07-22 12:24:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:27,528 INFO L225 Difference]: With dead ends: 31550 [2022-07-22 12:24:27,529 INFO L226 Difference]: Without dead ends: 20283 [2022-07-22 12:24:27,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:27,542 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:27,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:24:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2022-07-22 12:24:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 18779. [2022-07-22 12:24:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1888380019171372) internal successors, (22324), 18778 states have internal predecessors, (22324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22324 transitions. [2022-07-22 12:24:27,812 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22324 transitions. Word has length 236 [2022-07-22 12:24:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:27,812 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 22324 transitions. [2022-07-22 12:24:27,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22324 transitions. [2022-07-22 12:24:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-22 12:24:27,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:27,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:24:27,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -422645196, now seen corresponding path program 1 times [2022-07-22 12:24:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:27,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493427207] [2022-07-22 12:24:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 12:24:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:27,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493427207] [2022-07-22 12:24:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493427207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:27,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990246597] [2022-07-22 12:24:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:27,973 INFO L87 Difference]: Start difference. First operand 18779 states and 22324 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:30,382 INFO L93 Difference]: Finished difference Result 43564 states and 53013 transitions. [2022-07-22 12:24:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:30,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 322 [2022-07-22 12:24:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:30,425 INFO L225 Difference]: With dead ends: 43564 [2022-07-22 12:24:30,426 INFO L226 Difference]: Without dead ends: 25538 [2022-07-22 12:24:30,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:30,448 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:30,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:24:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2022-07-22 12:24:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24036. [2022-07-22 12:24:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.1785313085084252) internal successors, (28326), 24035 states have internal predecessors, (28326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28326 transitions. [2022-07-22 12:24:30,877 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28326 transitions. Word has length 322 [2022-07-22 12:24:30,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:30,877 INFO L495 AbstractCegarLoop]: Abstraction has 24036 states and 28326 transitions. [2022-07-22 12:24:30,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:30,878 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28326 transitions. [2022-07-22 12:24:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-07-22 12:24:30,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:30,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:30,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:24:30,886 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:30,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1577199462, now seen corresponding path program 1 times [2022-07-22 12:24:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:30,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724268184] [2022-07-22 12:24:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 12:24:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724268184] [2022-07-22 12:24:31,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724268184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:31,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:31,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732432057] [2022-07-22 12:24:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:31,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:31,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:31,027 INFO L87 Difference]: Start difference. First operand 24036 states and 28326 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:33,871 INFO L93 Difference]: Finished difference Result 60837 states and 71503 transitions. [2022-07-22 12:24:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 350 [2022-07-22 12:24:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:33,919 INFO L225 Difference]: With dead ends: 60837 [2022-07-22 12:24:33,920 INFO L226 Difference]: Without dead ends: 37554 [2022-07-22 12:24:33,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:33,948 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:33,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:24:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2022-07-22 12:24:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 35301. [2022-07-22 12:24:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 1.1668555240793201) internal successors, (41190), 35300 states have internal predecessors, (41190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 41190 transitions. [2022-07-22 12:24:34,483 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 41190 transitions. Word has length 350 [2022-07-22 12:24:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:34,486 INFO L495 AbstractCegarLoop]: Abstraction has 35301 states and 41190 transitions. [2022-07-22 12:24:34,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 41190 transitions. [2022-07-22 12:24:34,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-07-22 12:24:34,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:34,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:34,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 12:24:34,495 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 549530084, now seen corresponding path program 1 times [2022-07-22 12:24:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:34,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613734942] [2022-07-22 12:24:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-22 12:24:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613734942] [2022-07-22 12:24:34,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613734942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:34,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:34,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058352066] [2022-07-22 12:24:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:34,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:34,641 INFO L87 Difference]: Start difference. First operand 35301 states and 41190 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:37,667 INFO L93 Difference]: Finished difference Result 102893 states and 120518 transitions. [2022-07-22 12:24:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 354 [2022-07-22 12:24:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:37,742 INFO L225 Difference]: With dead ends: 102893 [2022-07-22 12:24:37,742 INFO L226 Difference]: Without dead ends: 63839 [2022-07-22 12:24:37,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:37,769 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 770 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:37,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:24:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2022-07-22 12:24:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 53325. [2022-07-22 12:24:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53325 states, 53324 states have (on average 1.1311416997974646) internal successors, (60317), 53324 states have internal predecessors, (60317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53325 states to 53325 states and 60317 transitions. [2022-07-22 12:24:38,636 INFO L78 Accepts]: Start accepts. Automaton has 53325 states and 60317 transitions. Word has length 354 [2022-07-22 12:24:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:38,637 INFO L495 AbstractCegarLoop]: Abstraction has 53325 states and 60317 transitions. [2022-07-22 12:24:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 53325 states and 60317 transitions. [2022-07-22 12:24:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-22 12:24:38,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:38,642 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:38,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:24:38,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash -640071796, now seen corresponding path program 1 times [2022-07-22 12:24:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:38,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553692809] [2022-07-22 12:24:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 12:24:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:38,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553692809] [2022-07-22 12:24:38,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553692809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:38,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:38,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440781014] [2022-07-22 12:24:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:38,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:38,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:38,788 INFO L87 Difference]: Start difference. First operand 53325 states and 60317 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:41,673 INFO L93 Difference]: Finished difference Result 135186 states and 154639 transitions. [2022-07-22 12:24:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2022-07-22 12:24:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:41,770 INFO L225 Difference]: With dead ends: 135186 [2022-07-22 12:24:41,771 INFO L226 Difference]: Without dead ends: 82614 [2022-07-22 12:24:41,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:41,810 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 722 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:41,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1234 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:24:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2022-07-22 12:24:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 77357. [2022-07-22 12:24:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77357 states, 77356 states have (on average 1.1153627385076788) internal successors, (86280), 77356 states have internal predecessors, (86280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77357 states to 77357 states and 86280 transitions. [2022-07-22 12:24:42,863 INFO L78 Accepts]: Start accepts. Automaton has 77357 states and 86280 transitions. Word has length 361 [2022-07-22 12:24:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:42,864 INFO L495 AbstractCegarLoop]: Abstraction has 77357 states and 86280 transitions. [2022-07-22 12:24:42,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 77357 states and 86280 transitions. [2022-07-22 12:24:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-07-22 12:24:42,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:42,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:42,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:24:42,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1518718614, now seen corresponding path program 1 times [2022-07-22 12:24:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:42,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140019171] [2022-07-22 12:24:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-07-22 12:24:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:43,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140019171] [2022-07-22 12:24:43,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140019171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:43,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:43,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:43,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901217377] [2022-07-22 12:24:43,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:43,181 INFO L87 Difference]: Start difference. First operand 77357 states and 86280 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:46,088 INFO L93 Difference]: Finished difference Result 165226 states and 183750 transitions. [2022-07-22 12:24:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:46,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2022-07-22 12:24:46,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:46,203 INFO L225 Difference]: With dead ends: 165226 [2022-07-22 12:24:46,203 INFO L226 Difference]: Without dead ends: 88622 [2022-07-22 12:24:46,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:46,382 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 763 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:46,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1248 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:24:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88622 states. [2022-07-22 12:24:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88622 to 85618. [2022-07-22 12:24:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85618 states, 85617 states have (on average 1.0999684642068748) internal successors, (94176), 85617 states have internal predecessors, (94176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85618 states to 85618 states and 94176 transitions. [2022-07-22 12:24:47,405 INFO L78 Accepts]: Start accepts. Automaton has 85618 states and 94176 transitions. Word has length 382 [2022-07-22 12:24:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 85618 states and 94176 transitions. [2022-07-22 12:24:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 85618 states and 94176 transitions. [2022-07-22 12:24:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-07-22 12:24:47,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:47,417 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:47,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:24:47,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash 282573416, now seen corresponding path program 1 times [2022-07-22 12:24:47,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:47,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801476659] [2022-07-22 12:24:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-22 12:24:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:47,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801476659] [2022-07-22 12:24:47,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801476659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:47,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:47,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704950361] [2022-07-22 12:24:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:47,748 INFO L87 Difference]: Start difference. First operand 85618 states and 94176 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:50,581 INFO L93 Difference]: Finished difference Result 170483 states and 187594 transitions. [2022-07-22 12:24:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:50,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 458 [2022-07-22 12:24:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:50,717 INFO L225 Difference]: With dead ends: 170483 [2022-07-22 12:24:50,717 INFO L226 Difference]: Without dead ends: 85618 [2022-07-22 12:24:50,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:50,735 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:50,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 408 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:24:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85618 states. [2022-07-22 12:24:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85618 to 83365. [2022-07-22 12:24:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83365 states, 83364 states have (on average 1.0677510676071207) internal successors, (89012), 83364 states have internal predecessors, (89012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83365 states to 83365 states and 89012 transitions. [2022-07-22 12:24:51,729 INFO L78 Accepts]: Start accepts. Automaton has 83365 states and 89012 transitions. Word has length 458 [2022-07-22 12:24:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:51,730 INFO L495 AbstractCegarLoop]: Abstraction has 83365 states and 89012 transitions. [2022-07-22 12:24:51,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 83365 states and 89012 transitions. [2022-07-22 12:24:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-07-22 12:24:51,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:51,750 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:51,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:24:51,751 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:51,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1267059596, now seen corresponding path program 1 times [2022-07-22 12:24:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:51,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122458547] [2022-07-22 12:24:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 448 proven. 229 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 12:24:52,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:52,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122458547] [2022-07-22 12:24:52,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122458547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:24:52,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707583778] [2022-07-22 12:24:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:52,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:24:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:24:52,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:24:52,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:24:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:52,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:24:52,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:24:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-07-22 12:24:52,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:24:52,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707583778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:52,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:24:52,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-22 12:24:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812539987] [2022-07-22 12:24:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:24:52,584 INFO L87 Difference]: Start difference. First operand 83365 states and 89012 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:24:55,515 INFO L93 Difference]: Finished difference Result 187005 states and 201029 transitions. [2022-07-22 12:24:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:24:55,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 525 [2022-07-22 12:24:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:24:55,630 INFO L225 Difference]: With dead ends: 187005 [2022-07-22 12:24:55,630 INFO L226 Difference]: Without dead ends: 104393 [2022-07-22 12:24:55,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:24:55,671 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 649 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:24:55,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1391 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:24:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104393 states. [2022-07-22 12:24:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104393 to 93128. [2022-07-22 12:24:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93128 states, 93127 states have (on average 1.0624738260654805) internal successors, (98945), 93127 states have internal predecessors, (98945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93128 states to 93128 states and 98945 transitions. [2022-07-22 12:24:56,948 INFO L78 Accepts]: Start accepts. Automaton has 93128 states and 98945 transitions. Word has length 525 [2022-07-22 12:24:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:24:56,949 INFO L495 AbstractCegarLoop]: Abstraction has 93128 states and 98945 transitions. [2022-07-22 12:24:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:24:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 93128 states and 98945 transitions. [2022-07-22 12:24:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-07-22 12:24:56,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:24:56,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:24:57,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:24:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 12:24:57,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:24:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:24:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1177537696, now seen corresponding path program 1 times [2022-07-22 12:24:57,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:24:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978913303] [2022-07-22 12:24:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:24:57,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:24:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:24:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-07-22 12:24:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:24:57,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978913303] [2022-07-22 12:24:57,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978913303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:24:57,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:24:57,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:24:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390020024] [2022-07-22 12:24:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:24:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:24:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:24:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:24:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:24:57,477 INFO L87 Difference]: Start difference. First operand 93128 states and 98945 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:00,424 INFO L93 Difference]: Finished difference Result 202776 states and 215855 transitions. [2022-07-22 12:25:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:00,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 601 [2022-07-22 12:25:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:00,808 INFO L225 Difference]: With dead ends: 202776 [2022-07-22 12:25:00,808 INFO L226 Difference]: Without dead ends: 110401 [2022-07-22 12:25:00,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:00,848 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 851 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:00,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1117 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:25:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110401 states. [2022-07-22 12:25:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110401 to 108899. [2022-07-22 12:25:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108899 states, 108898 states have (on average 1.0576778269573361) internal successors, (115179), 108898 states have internal predecessors, (115179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108899 states to 108899 states and 115179 transitions. [2022-07-22 12:25:02,120 INFO L78 Accepts]: Start accepts. Automaton has 108899 states and 115179 transitions. Word has length 601 [2022-07-22 12:25:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:02,121 INFO L495 AbstractCegarLoop]: Abstraction has 108899 states and 115179 transitions. [2022-07-22 12:25:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 108899 states and 115179 transitions. [2022-07-22 12:25:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2022-07-22 12:25:02,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:02,440 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:25:02,440 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1437867540, now seen corresponding path program 1 times [2022-07-22 12:25:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:02,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814702347] [2022-07-22 12:25:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 811 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:25:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814702347] [2022-07-22 12:25:03,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814702347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:25:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373512571] [2022-07-22 12:25:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:03,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:25:03,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:25:03,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:25:03,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:25:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:03,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 12:25:03,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:25:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 605 proven. 173 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-22 12:25:10,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 12:25:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-22 12:25:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373512571] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 12:25:14,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 12:25:14,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2022-07-22 12:25:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522395934] [2022-07-22 12:25:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:14,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:25:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:25:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-22 12:25:14,385 INFO L87 Difference]: Start difference. First operand 108899 states and 115179 transitions. Second operand has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:18,762 INFO L93 Difference]: Finished difference Result 258702 states and 273318 transitions. [2022-07-22 12:25:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 12:25:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 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 927 [2022-07-22 12:25:18,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:18,987 INFO L225 Difference]: With dead ends: 258702 [2022-07-22 12:25:18,987 INFO L226 Difference]: Without dead ends: 149805 [2022-07-22 12:25:19,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1862 GetRequests, 1850 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-22 12:25:19,081 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1059 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:19,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1028 Invalid, 4847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 4289 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 12:25:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149805 states. [2022-07-22 12:25:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149805 to 109650. [2022-07-22 12:25:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109650 states, 109649 states have (on average 1.0572827841567183) internal successors, (115930), 109649 states have internal predecessors, (115930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109650 states to 109650 states and 115930 transitions. [2022-07-22 12:25:20,835 INFO L78 Accepts]: Start accepts. Automaton has 109650 states and 115930 transitions. Word has length 927 [2022-07-22 12:25:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:20,846 INFO L495 AbstractCegarLoop]: Abstraction has 109650 states and 115930 transitions. [2022-07-22 12:25:20,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 109650 states and 115930 transitions. [2022-07-22 12:25:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-07-22 12:25:20,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:20,935 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:20,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 12:25:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 12:25:21,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1751533265, now seen corresponding path program 1 times [2022-07-22 12:25:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:21,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840119537] [2022-07-22 12:25:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:21,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-07-22 12:25:21,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:21,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840119537] [2022-07-22 12:25:21,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840119537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:21,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:21,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:25:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018119397] [2022-07-22 12:25:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:21,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:21,514 INFO L87 Difference]: Start difference. First operand 109650 states and 115930 transitions. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:24,982 INFO L93 Difference]: Finished difference Result 263607 states and 279145 transitions. [2022-07-22 12:25:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 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 983 [2022-07-22 12:25:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:25,149 INFO L225 Difference]: With dead ends: 263607 [2022-07-22 12:25:25,150 INFO L226 Difference]: Without dead ends: 154710 [2022-07-22 12:25:25,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:25:25,215 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 714 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:25,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 577 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:25:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154710 states. [2022-07-22 12:25:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154710 to 147951. [2022-07-22 12:25:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147951 states, 147950 states have (on average 1.0539979722879351) internal successors, (155939), 147950 states have internal predecessors, (155939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147951 states to 147951 states and 155939 transitions. [2022-07-22 12:25:27,112 INFO L78 Accepts]: Start accepts. Automaton has 147951 states and 155939 transitions. Word has length 983 [2022-07-22 12:25:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:27,113 INFO L495 AbstractCegarLoop]: Abstraction has 147951 states and 155939 transitions. [2022-07-22 12:25:27,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 147951 states and 155939 transitions. [2022-07-22 12:25:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2022-07-22 12:25:27,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:27,168 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:27,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 12:25:27,168 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -145187198, now seen corresponding path program 1 times [2022-07-22 12:25:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:27,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370672511] [2022-07-22 12:25:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-22 12:25:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:28,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370672511] [2022-07-22 12:25:28,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370672511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:28,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:25:28,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 12:25:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324903873] [2022-07-22 12:25:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:25:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:25:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:25:28,079 INFO L87 Difference]: Start difference. First operand 147951 states and 155939 transitions. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:32,972 INFO L93 Difference]: Finished difference Result 339458 states and 356934 transitions. [2022-07-22 12:25:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:25:32,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 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 987 [2022-07-22 12:25:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:33,179 INFO L225 Difference]: With dead ends: 339458 [2022-07-22 12:25:33,179 INFO L226 Difference]: Without dead ends: 192260 [2022-07-22 12:25:33,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:25:33,256 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1122 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:33,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 29 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 12:25:33,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192260 states. [2022-07-22 12:25:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192260 to 183248. [2022-07-22 12:25:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183248 states, 183247 states have (on average 1.0498671192434255) internal successors, (192385), 183247 states have internal predecessors, (192385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183248 states to 183248 states and 192385 transitions. [2022-07-22 12:25:36,010 INFO L78 Accepts]: Start accepts. Automaton has 183248 states and 192385 transitions. Word has length 987 [2022-07-22 12:25:36,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:36,011 INFO L495 AbstractCegarLoop]: Abstraction has 183248 states and 192385 transitions. [2022-07-22 12:25:36,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 183248 states and 192385 transitions. [2022-07-22 12:25:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-07-22 12:25:36,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:36,078 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:36,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 12:25:36,079 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1821421802, now seen corresponding path program 1 times [2022-07-22 12:25:36,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:36,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322661302] [2022-07-22 12:25:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:36,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 994 proven. 77 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-22 12:25:36,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:25:36,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322661302] [2022-07-22 12:25:36,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322661302] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:25:36,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590615161] [2022-07-22 12:25:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:36,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:25:36,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:25:36,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:25:36,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 12:25:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:25:36,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:25:36,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:25:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 994 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-22 12:25:37,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:25:37,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590615161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:25:37,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:25:37,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 12:25:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616164290] [2022-07-22 12:25:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:25:37,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:25:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:25:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:25:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:25:37,018 INFO L87 Difference]: Start difference. First operand 183248 states and 192385 transitions. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:25:40,857 INFO L93 Difference]: Finished difference Result 365743 states and 384012 transitions. [2022-07-22 12:25:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:25:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 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 990 [2022-07-22 12:25:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:25:41,153 INFO L225 Difference]: With dead ends: 365743 [2022-07-22 12:25:41,153 INFO L226 Difference]: Without dead ends: 183248 [2022-07-22 12:25:41,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:25:41,253 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 644 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:25:41,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1179 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 12:25:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2022-07-22 12:25:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 183248. [2022-07-22 12:25:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183248 states, 183247 states have (on average 1.0388710319950667) internal successors, (190370), 183247 states have internal predecessors, (190370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183248 states to 183248 states and 190370 transitions. [2022-07-22 12:25:43,840 INFO L78 Accepts]: Start accepts. Automaton has 183248 states and 190370 transitions. Word has length 990 [2022-07-22 12:25:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:25:43,840 INFO L495 AbstractCegarLoop]: Abstraction has 183248 states and 190370 transitions. [2022-07-22 12:25:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:25:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 183248 states and 190370 transitions. [2022-07-22 12:25:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2022-07-22 12:25:43,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:25:43,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:25:43,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 12:25:44,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:25:44,111 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:25:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:25:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1450510515, now seen corresponding path program 1 times [2022-07-22 12:25:44,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:25:44,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136056091] [2022-07-22 12:25:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:25:44,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:25:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat