./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.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 e6586f3310e3029a2986640bb61549fc4f6b9393300761740fd8a157791ea846 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:26:53,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:26:53,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:26:53,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:26:53,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:26:53,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:26:53,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:26:53,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:26:53,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:26:53,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:26:53,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:26:53,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:26:53,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:26:53,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:26:53,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:26:53,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:26:53,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:26:53,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:26:53,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:26:53,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:26:53,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:26:53,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:26:53,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:26:53,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:26:53,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:26:53,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:26:53,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:26:53,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:26:53,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:26:53,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:26:53,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:26:53,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:26:53,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:26:53,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:26:53,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:26:53,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:26:53,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:26:53,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:26:53,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:26:53,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:26:53,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:26:53,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:26:53,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:26:53,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:26:53,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:26:53,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:26:53,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:26:53,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:26:53,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:26:53,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:26:53,468 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:26:53,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:26:53,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:26:53,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:26:53,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:26:53,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:26:53,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:26:53,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:26:53,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:26:53,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:26:53,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:26:53,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:26:53,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:26:53,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:26:53,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:26:53,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:26:53,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:26:53,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:26:53,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:26:53,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:26:53,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:26:53,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:26:53,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:26:53,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:26:53,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:26:53,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:26:53,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6586f3310e3029a2986640bb61549fc4f6b9393300761740fd8a157791ea846 [2021-12-16 02:26:53,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:26:53,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:26:53,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:26:53,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:26:53,696 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:26:53,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c [2021-12-16 02:26:53,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d320434/a757a1c1aa10405e833dd2ab62ab88af/FLAG7c5373bb1 [2021-12-16 02:26:54,322 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:26:54,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c [2021-12-16 02:26:54,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d320434/a757a1c1aa10405e833dd2ab62ab88af/FLAG7c5373bb1 [2021-12-16 02:26:54,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d320434/a757a1c1aa10405e833dd2ab62ab88af [2021-12-16 02:26:54,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:26:54,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:26:54,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:26:54,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:26:54,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:26:54,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:26:54" (1/1) ... [2021-12-16 02:26:54,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f382a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:54, skipping insertion in model container [2021-12-16 02:26:54,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:26:54" (1/1) ... [2021-12-16 02:26:54,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:26:54,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:26:55,279 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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c[26897,26910] [2021-12-16 02:26:55,327 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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c[33833,33846] [2021-12-16 02:26:55,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:26:55,777 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:26:55,829 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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c[26897,26910] [2021-12-16 02:26:55,842 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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c[33833,33846] [2021-12-16 02:26:56,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:26:56,126 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:26:56,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56 WrapperNode [2021-12-16 02:26:56,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:26:56,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:26:56,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:26:56,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:26:56,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,439 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5282 [2021-12-16 02:26:56,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:26:56,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:26:56,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:26:56,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:26:56,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:26:56,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:26:56,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:26:56,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:26:56,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (1/1) ... [2021-12-16 02:26:56,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:26:56,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:26:56,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:26:56,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:26:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:26:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:26:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:26:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:26:57,159 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:26:57,161 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:26:59,721 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:26:59,733 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:26:59,734 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:26:59,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:26:59 BoogieIcfgContainer [2021-12-16 02:26:59,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:26:59,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:26:59,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:26:59,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:26:59,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:26:54" (1/3) ... [2021-12-16 02:26:59,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706c2ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:26:59, skipping insertion in model container [2021-12-16 02:26:59,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:26:56" (2/3) ... [2021-12-16 02:26:59,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706c2ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:26:59, skipping insertion in model container [2021-12-16 02:26:59,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:26:59" (3/3) ... [2021-12-16 02:26:59,741 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label05.c [2021-12-16 02:26:59,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:26:59,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:26:59,775 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:26:59,779 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:26:59,780 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:26:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:26:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 02:26:59,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:26:59,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:26:59,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:26:59,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:26:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2021-12-16 02:26:59,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:26:59,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747517848] [2021-12-16 02:26:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:26:59,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:00,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:00,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747517848] [2021-12-16 02:27:00,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747517848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:00,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:00,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:27:00,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339526330] [2021-12-16 02:27:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:00,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:27:00,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:00,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:27:00,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:27:00,111 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:00,168 INFO L93 Difference]: Finished difference Result 1859 states and 3512 transitions. [2021-12-16 02:27:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:27:00,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-16 02:27:00,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:00,189 INFO L225 Difference]: With dead ends: 1859 [2021-12-16 02:27:00,189 INFO L226 Difference]: Without dead ends: 897 [2021-12-16 02:27:00,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:27:00,196 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:00,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-16 02:27:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-16 02:27:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.8860335195530726) internal successors, (1688), 896 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1688 transitions. [2021-12-16 02:27:00,241 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1688 transitions. Word has length 46 [2021-12-16 02:27:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:00,241 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1688 transitions. [2021-12-16 02:27:00,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1688 transitions. [2021-12-16 02:27:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 02:27:00,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:00,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:00,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:27:00,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-16 02:27:00,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:00,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5927963] [2021-12-16 02:27:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:00,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:00,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:00,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5927963] [2021-12-16 02:27:00,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5927963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:00,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:00,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:27:00,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224746564] [2021-12-16 02:27:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:00,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:27:00,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:27:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:27:00,331 INFO L87 Difference]: Start difference. First operand 897 states and 1688 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:00,437 INFO L93 Difference]: Finished difference Result 977 states and 1813 transitions. [2021-12-16 02:27:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:27:00,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-16 02:27:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:00,442 INFO L225 Difference]: With dead ends: 977 [2021-12-16 02:27:00,442 INFO L226 Difference]: Without dead ends: 897 [2021-12-16 02:27:00,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:27:00,444 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:00,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-16 02:27:00,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-16 02:27:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.817877094972067) internal successors, (1627), 896 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1627 transitions. [2021-12-16 02:27:00,457 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1627 transitions. Word has length 46 [2021-12-16 02:27:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:00,458 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1627 transitions. [2021-12-16 02:27:00,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1627 transitions. [2021-12-16 02:27:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 02:27:00,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:00,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:00,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:27:00,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 817411013, now seen corresponding path program 1 times [2021-12-16 02:27:00,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:00,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129214471] [2021-12-16 02:27:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:00,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:00,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129214471] [2021-12-16 02:27:00,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129214471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:00,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:00,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:00,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043747971] [2021-12-16 02:27:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:00,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:27:00,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:27:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:27:00,591 INFO L87 Difference]: Start difference. First operand 897 states and 1627 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:05,796 INFO L93 Difference]: Finished difference Result 3152 states and 5936 transitions. [2021-12-16 02:27:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 02:27:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-12-16 02:27:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:05,804 INFO L225 Difference]: With dead ends: 3152 [2021-12-16 02:27:05,804 INFO L226 Difference]: Without dead ends: 2399 [2021-12-16 02:27:05,805 INFO L932 BasicCegarLoop]: 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 [2021-12-16 02:27:05,808 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 2570 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:05,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 899 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-16 02:27:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-12-16 02:27:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2399. [2021-12-16 02:27:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2397 states have (on average 1.5031289111389237) internal successors, (3603), 2398 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3603 transitions. [2021-12-16 02:27:05,846 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3603 transitions. Word has length 60 [2021-12-16 02:27:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:05,847 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3603 transitions. [2021-12-16 02:27:05,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3603 transitions. [2021-12-16 02:27:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 02:27:05,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:05,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:05,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:27:05,854 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:05,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-16 02:27:05,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728514371] [2021-12-16 02:27:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:05,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:05,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:05,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728514371] [2021-12-16 02:27:05,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728514371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:05,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:05,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:05,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725266930] [2021-12-16 02:27:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:05,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:05,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:05,990 INFO L87 Difference]: Start difference. First operand 2399 states and 3603 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:06,019 INFO L93 Difference]: Finished difference Result 2545 states and 3835 transitions. [2021-12-16 02:27:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-16 02:27:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:06,029 INFO L225 Difference]: With dead ends: 2545 [2021-12-16 02:27:06,029 INFO L226 Difference]: Without dead ends: 2469 [2021-12-16 02:27:06,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,037 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:06,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-12-16 02:27:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-12-16 02:27:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2465 states have (on average 1.5058823529411764) internal successors, (3712), 2466 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3712 transitions. [2021-12-16 02:27:06,078 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3712 transitions. Word has length 106 [2021-12-16 02:27:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:06,079 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3712 transitions. [2021-12-16 02:27:06,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3712 transitions. [2021-12-16 02:27:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 02:27:06,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:06,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:06,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:27:06,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-16 02:27:06,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:06,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686262628] [2021-12-16 02:27:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:06,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:06,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:06,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686262628] [2021-12-16 02:27:06,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686262628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:06,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:06,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:06,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848785136] [2021-12-16 02:27:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:06,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:06,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,172 INFO L87 Difference]: Start difference. First operand 2467 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:06,201 INFO L93 Difference]: Finished difference Result 2743 states and 4152 transitions. [2021-12-16 02:27:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:06,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-16 02:27:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:06,208 INFO L225 Difference]: With dead ends: 2743 [2021-12-16 02:27:06,208 INFO L226 Difference]: Without dead ends: 2599 [2021-12-16 02:27:06,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,209 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:06,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-12-16 02:27:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2597. [2021-12-16 02:27:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2595 states have (on average 1.5102119460500962) internal successors, (3919), 2596 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3919 transitions. [2021-12-16 02:27:06,243 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3919 transitions. Word has length 106 [2021-12-16 02:27:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:06,244 INFO L470 AbstractCegarLoop]: Abstraction has 2597 states and 3919 transitions. [2021-12-16 02:27:06,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3919 transitions. [2021-12-16 02:27:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 02:27:06,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:06,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:06,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:27:06,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-16 02:27:06,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:06,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495243633] [2021-12-16 02:27:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:06,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:06,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:06,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495243633] [2021-12-16 02:27:06,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495243633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:06,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:06,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:06,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760075144] [2021-12-16 02:27:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:06,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:06,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,291 INFO L87 Difference]: Start difference. First operand 2597 states and 3919 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:06,322 INFO L93 Difference]: Finished difference Result 3121 states and 4753 transitions. [2021-12-16 02:27:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-16 02:27:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:06,330 INFO L225 Difference]: With dead ends: 3121 [2021-12-16 02:27:06,331 INFO L226 Difference]: Without dead ends: 2847 [2021-12-16 02:27:06,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,333 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:06,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-12-16 02:27:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2845. [2021-12-16 02:27:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2843 states have (on average 1.516355962011959) internal successors, (4311), 2844 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4311 transitions. [2021-12-16 02:27:06,372 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4311 transitions. Word has length 106 [2021-12-16 02:27:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:06,372 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 4311 transitions. [2021-12-16 02:27:06,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4311 transitions. [2021-12-16 02:27:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 02:27:06,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:06,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:06,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:27:06,374 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-16 02:27:06,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158307549] [2021-12-16 02:27:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:06,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:06,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:06,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158307549] [2021-12-16 02:27:06,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158307549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:06,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:06,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:06,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283763773] [2021-12-16 02:27:06,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:06,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:06,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:06,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:06,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,418 INFO L87 Difference]: Start difference. First operand 2845 states and 4311 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:06,452 INFO L93 Difference]: Finished difference Result 3841 states and 5889 transitions. [2021-12-16 02:27:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-16 02:27:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:06,460 INFO L225 Difference]: With dead ends: 3841 [2021-12-16 02:27:06,460 INFO L226 Difference]: Without dead ends: 3319 [2021-12-16 02:27:06,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:06,462 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-16 02:27:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3317. [2021-12-16 02:27:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3315 states have (on average 1.5236802413273) internal successors, (5051), 3316 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 5051 transitions. [2021-12-16 02:27:06,509 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 5051 transitions. Word has length 106 [2021-12-16 02:27:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:06,510 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 5051 transitions. [2021-12-16 02:27:06,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 5051 transitions. [2021-12-16 02:27:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 02:27:06,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:06,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:06,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:27:06,511 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-16 02:27:06,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:06,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748441930] [2021-12-16 02:27:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:06,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:06,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:06,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748441930] [2021-12-16 02:27:06,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748441930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:06,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:06,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:27:06,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657022876] [2021-12-16 02:27:06,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:06,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:27:06,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:27:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:27:06,613 INFO L87 Difference]: Start difference. First operand 3317 states and 5051 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:07,312 INFO L93 Difference]: Finished difference Result 19221 states and 30155 transitions. [2021-12-16 02:27:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 02:27:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-16 02:27:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:07,365 INFO L225 Difference]: With dead ends: 19221 [2021-12-16 02:27:07,366 INFO L226 Difference]: Without dead ends: 18227 [2021-12-16 02:27:07,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-16 02:27:07,375 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:07,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:27:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18227 states. [2021-12-16 02:27:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18227 to 4309. [2021-12-16 02:27:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4307 states have (on average 1.529370791734386) internal successors, (6587), 4308 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6587 transitions. [2021-12-16 02:27:07,577 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6587 transitions. Word has length 106 [2021-12-16 02:27:07,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:07,577 INFO L470 AbstractCegarLoop]: Abstraction has 4309 states and 6587 transitions. [2021-12-16 02:27:07,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6587 transitions. [2021-12-16 02:27:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 02:27:07,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:07,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:07,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:27:07,582 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:07,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:07,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-16 02:27:07,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:07,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101077679] [2021-12-16 02:27:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:07,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:07,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:07,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101077679] [2021-12-16 02:27:07,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101077679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:07,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:07,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:07,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590528786] [2021-12-16 02:27:07,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:07,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:07,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:07,642 INFO L87 Difference]: Start difference. First operand 4309 states and 6587 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:07,761 INFO L93 Difference]: Finished difference Result 7251 states and 11183 transitions. [2021-12-16 02:27:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:07,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-16 02:27:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:07,770 INFO L225 Difference]: With dead ends: 7251 [2021-12-16 02:27:07,770 INFO L226 Difference]: Without dead ends: 5265 [2021-12-16 02:27:07,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:07,774 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:07,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-16 02:27:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-16 02:27:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5306975860102643) internal successors, (8053), 5262 states have internal predecessors, (8053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8053 transitions. [2021-12-16 02:27:07,957 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8053 transitions. Word has length 108 [2021-12-16 02:27:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8053 transitions. [2021-12-16 02:27:07,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8053 transitions. [2021-12-16 02:27:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 02:27:07,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:07,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:07,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:27:07,962 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:07,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-16 02:27:07,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:07,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414543496] [2021-12-16 02:27:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:07,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:08,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:08,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414543496] [2021-12-16 02:27:08,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414543496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:08,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:08,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:27:08,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375225094] [2021-12-16 02:27:08,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:08,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:27:08,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:08,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:27:08,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:27:08,215 INFO L87 Difference]: Start difference. First operand 5263 states and 8053 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:08,672 INFO L93 Difference]: Finished difference Result 8203 states and 12623 transitions. [2021-12-16 02:27:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:27:08,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-16 02:27:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:08,680 INFO L225 Difference]: With dead ends: 8203 [2021-12-16 02:27:08,680 INFO L226 Difference]: Without dead ends: 5265 [2021-12-16 02:27:08,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:27:08,684 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 9658 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9658 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:08,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9658 Valid, 2490 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:27:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-16 02:27:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-16 02:27:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5261357156434139) internal successors, (8029), 5262 states have internal predecessors, (8029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8029 transitions. [2021-12-16 02:27:08,801 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8029 transitions. Word has length 108 [2021-12-16 02:27:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:08,802 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8029 transitions. [2021-12-16 02:27:08,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8029 transitions. [2021-12-16 02:27:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 02:27:08,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:08,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:08,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:27:08,804 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-16 02:27:08,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877566491] [2021-12-16 02:27:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:08,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:08,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:08,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877566491] [2021-12-16 02:27:08,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877566491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:08,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:08,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:08,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477116814] [2021-12-16 02:27:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:08,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:08,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:08,851 INFO L87 Difference]: Start difference. First operand 5263 states and 8029 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:09,052 INFO L93 Difference]: Finished difference Result 10851 states and 16639 transitions. [2021-12-16 02:27:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-16 02:27:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:09,064 INFO L225 Difference]: With dead ends: 10851 [2021-12-16 02:27:09,064 INFO L226 Difference]: Without dead ends: 7913 [2021-12-16 02:27:09,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:09,070 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:09,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2021-12-16 02:27:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7911. [2021-12-16 02:27:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 7909 states have (on average 1.5229485396383866) internal successors, (12045), 7910 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 12045 transitions. [2021-12-16 02:27:09,338 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 12045 transitions. Word has length 108 [2021-12-16 02:27:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:09,339 INFO L470 AbstractCegarLoop]: Abstraction has 7911 states and 12045 transitions. [2021-12-16 02:27:09,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 12045 transitions. [2021-12-16 02:27:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 02:27:09,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:09,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:09,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:27:09,341 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-16 02:27:09,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:09,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638981036] [2021-12-16 02:27:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:09,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:09,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:09,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638981036] [2021-12-16 02:27:09,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638981036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:09,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:09,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:09,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604402240] [2021-12-16 02:27:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:09,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:09,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:09,385 INFO L87 Difference]: Start difference. First operand 7911 states and 12045 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:09,723 INFO L93 Difference]: Finished difference Result 18507 states and 28207 transitions. [2021-12-16 02:27:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:09,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-16 02:27:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:09,748 INFO L225 Difference]: With dead ends: 18507 [2021-12-16 02:27:09,748 INFO L226 Difference]: Without dead ends: 12921 [2021-12-16 02:27:09,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:09,759 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:09,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12921 states. [2021-12-16 02:27:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12921 to 12919. [2021-12-16 02:27:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12919 states, 12917 states have (on average 1.5134319114345436) internal successors, (19549), 12918 states have internal predecessors, (19549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12919 states to 12919 states and 19549 transitions. [2021-12-16 02:27:10,377 INFO L78 Accepts]: Start accepts. Automaton has 12919 states and 19549 transitions. Word has length 108 [2021-12-16 02:27:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:10,378 INFO L470 AbstractCegarLoop]: Abstraction has 12919 states and 19549 transitions. [2021-12-16 02:27:10,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12919 states and 19549 transitions. [2021-12-16 02:27:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 02:27:10,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:10,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:10,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:27:10,379 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-16 02:27:10,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:10,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673587127] [2021-12-16 02:27:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:10,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:10,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673587127] [2021-12-16 02:27:10,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673587127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:10,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:10,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:10,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672330614] [2021-12-16 02:27:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:10,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:10,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:10,417 INFO L87 Difference]: Start difference. First operand 12919 states and 19549 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:10,992 INFO L93 Difference]: Finished difference Result 32955 states and 49759 transitions. [2021-12-16 02:27:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:10,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-16 02:27:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:11,026 INFO L225 Difference]: With dead ends: 32955 [2021-12-16 02:27:11,027 INFO L226 Difference]: Without dead ends: 22361 [2021-12-16 02:27:11,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:11,039 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:11,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22361 states. [2021-12-16 02:27:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22361 to 22359. [2021-12-16 02:27:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22359 states, 22357 states have (on average 1.4984568591492597) internal successors, (33501), 22358 states have internal predecessors, (33501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 33501 transitions. [2021-12-16 02:27:11,803 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 33501 transitions. Word has length 108 [2021-12-16 02:27:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:11,803 INFO L470 AbstractCegarLoop]: Abstraction has 22359 states and 33501 transitions. [2021-12-16 02:27:11,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 33501 transitions. [2021-12-16 02:27:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 02:27:11,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:11,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:11,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:27:11,805 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-16 02:27:11,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:11,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152985127] [2021-12-16 02:27:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:11,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:11,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152985127] [2021-12-16 02:27:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152985127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:11,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:11,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:11,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739449364] [2021-12-16 02:27:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:11,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:27:11,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:27:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:11,849 INFO L87 Difference]: Start difference. First operand 22359 states and 33501 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:13,077 INFO L93 Difference]: Finished difference Result 60123 states and 89695 transitions. [2021-12-16 02:27:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:27:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-16 02:27:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:13,137 INFO L225 Difference]: With dead ends: 60123 [2021-12-16 02:27:13,138 INFO L226 Difference]: Without dead ends: 40089 [2021-12-16 02:27:13,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:27:13,165 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:13,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40089 states. [2021-12-16 02:27:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40089 to 40087. [2021-12-16 02:27:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40087 states, 40085 states have (on average 1.4791817388050392) internal successors, (59293), 40086 states have internal predecessors, (59293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40087 states to 40087 states and 59293 transitions. [2021-12-16 02:27:14,719 INFO L78 Accepts]: Start accepts. Automaton has 40087 states and 59293 transitions. Word has length 108 [2021-12-16 02:27:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:14,719 INFO L470 AbstractCegarLoop]: Abstraction has 40087 states and 59293 transitions. [2021-12-16 02:27:14,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 40087 states and 59293 transitions. [2021-12-16 02:27:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 02:27:14,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:14,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:14,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:27:14,721 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-16 02:27:14,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:14,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842259606] [2021-12-16 02:27:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:14,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:14,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842259606] [2021-12-16 02:27:14,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842259606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:14,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:14,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:27:14,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767495215] [2021-12-16 02:27:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:14,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:27:14,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:27:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:27:14,805 INFO L87 Difference]: Start difference. First operand 40087 states and 59293 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:17,591 INFO L93 Difference]: Finished difference Result 72254 states and 105870 transitions. [2021-12-16 02:27:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:27:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 02:27:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:17,733 INFO L225 Difference]: With dead ends: 72254 [2021-12-16 02:27:17,733 INFO L226 Difference]: Without dead ends: 72252 [2021-12-16 02:27:17,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:27:17,760 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 934 mSDsluCounter, 9368 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 11034 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:17,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 11034 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:27:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72252 states. [2021-12-16 02:27:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72252 to 41623. [2021-12-16 02:27:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41623 states, 41621 states have (on average 1.4584224309843588) internal successors, (60701), 41622 states have internal predecessors, (60701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41623 states to 41623 states and 60701 transitions. [2021-12-16 02:27:20,043 INFO L78 Accepts]: Start accepts. Automaton has 41623 states and 60701 transitions. Word has length 109 [2021-12-16 02:27:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:20,043 INFO L470 AbstractCegarLoop]: Abstraction has 41623 states and 60701 transitions. [2021-12-16 02:27:20,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 41623 states and 60701 transitions. [2021-12-16 02:27:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-16 02:27:20,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:20,046 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:20,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:27:20,046 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash 6638733, now seen corresponding path program 1 times [2021-12-16 02:27:20,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:20,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381997443] [2021-12-16 02:27:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:20,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:27:20,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:20,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381997443] [2021-12-16 02:27:20,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381997443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:20,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:20,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:27:20,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600939407] [2021-12-16 02:27:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:20,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 02:27:20,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 02:27:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 02:27:20,113 INFO L87 Difference]: Start difference. First operand 41623 states and 60701 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:24,906 INFO L93 Difference]: Finished difference Result 45417 states and 66806 transitions. [2021-12-16 02:27:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 02:27:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-12-16 02:27:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:24,968 INFO L225 Difference]: With dead ends: 45417 [2021-12-16 02:27:24,968 INFO L226 Difference]: Without dead ends: 43125 [2021-12-16 02:27:24,979 INFO L932 BasicCegarLoop]: 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 [2021-12-16 02:27:24,980 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 877 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:24,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1087 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-16 02:27:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43125 states. [2021-12-16 02:27:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43125 to 43125. [2021-12-16 02:27:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43125 states, 43123 states have (on average 1.4443800292187463) internal successors, (62286), 43124 states have internal predecessors, (62286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43125 states to 43125 states and 62286 transitions. [2021-12-16 02:27:27,058 INFO L78 Accepts]: Start accepts. Automaton has 43125 states and 62286 transitions. Word has length 131 [2021-12-16 02:27:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:27,059 INFO L470 AbstractCegarLoop]: Abstraction has 43125 states and 62286 transitions. [2021-12-16 02:27:27,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 43125 states and 62286 transitions. [2021-12-16 02:27:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 02:27:27,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:27,079 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:27,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:27:27,079 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-16 02:27:27,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:27,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115854749] [2021-12-16 02:27:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:27,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 02:27:27,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:27,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115854749] [2021-12-16 02:27:27,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115854749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:27,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:27,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:27:27,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673072598] [2021-12-16 02:27:27,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:27,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:27:27,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:27:27,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:27:27,180 INFO L87 Difference]: Start difference. First operand 43125 states and 62286 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:27:39,434 INFO L93 Difference]: Finished difference Result 365063 states and 530583 transitions. [2021-12-16 02:27:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:27:39,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 149 [2021-12-16 02:27:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:27:39,960 INFO L225 Difference]: With dead ends: 365063 [2021-12-16 02:27:39,960 INFO L226 Difference]: Without dead ends: 325765 [2021-12-16 02:27:40,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:27:40,090 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 12960 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12960 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:27:40,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12960 Valid, 4343 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:27:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325765 states. [2021-12-16 02:27:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325765 to 82421. [2021-12-16 02:27:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82421 states, 82419 states have (on average 1.4452735412950897) internal successors, (119118), 82420 states have internal predecessors, (119118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82421 states to 82421 states and 119118 transitions. [2021-12-16 02:27:45,869 INFO L78 Accepts]: Start accepts. Automaton has 82421 states and 119118 transitions. Word has length 149 [2021-12-16 02:27:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:27:45,870 INFO L470 AbstractCegarLoop]: Abstraction has 82421 states and 119118 transitions. [2021-12-16 02:27:45,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:27:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 82421 states and 119118 transitions. [2021-12-16 02:27:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 02:27:45,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:27:45,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:27:45,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:27:45,906 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:27:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:27:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1273280147, now seen corresponding path program 1 times [2021-12-16 02:27:45,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:27:45,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388750826] [2021-12-16 02:27:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:27:45,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:27:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:27:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-16 02:27:46,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:27:46,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388750826] [2021-12-16 02:27:46,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388750826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:27:46,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:27:46,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:27:46,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246115062] [2021-12-16 02:27:46,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:27:46,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:27:46,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:27:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:27:46,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:27:46,014 INFO L87 Difference]: Start difference. First operand 82421 states and 119118 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)